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    <link:label id="lab_rmbs_CostMethodInvestmentOwnershipPercentageMaximum_5892CF2345E4356B17C3DCADE98C478D_documentation_en-US" xlink:label="lab_rmbs_CostMethodInvestmentOwnershipPercentageMaximum_5892CF2345E4356B17C3DCADE98C478D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the maximum percentage of investment in other entities which are being accounted for by using the cost method.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_CostMethodInvestmentOwnershipPercentageMaximum" xlink:label="loc_rmbs_CostMethodInvestmentOwnershipPercentageMaximum_5892CF2345E4356B17C3DCADE98C478D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_CostMethodInvestmentOwnershipPercentageMaximum_5892CF2345E4356B17C3DCADE98C478D" xlink:to="lab_rmbs_CostMethodInvestmentOwnershipPercentageMaximum_5892CF2345E4356B17C3DCADE98C478D" xlink:type="arc" />
    <link:label id="lab_rmbs_Litigationandassertedclaimsdisclosureabstract_45F6F88474006B94EE15DCADE90F0A0C_label_en-US" xlink:label="lab_rmbs_Litigationandassertedclaimsdisclosureabstract_45F6F88474006B94EE15DCADE90F0A0C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">LitigationAndAssertedClaimsDisclosureAbstract</link:label>
    <link:label id="lab_rmbs_Litigationandassertedclaimsdisclosureabstract_45F6F88474006B94EE15DCADE90F0A0C_documentation_en-US" xlink:label="lab_rmbs_Litigationandassertedclaimsdisclosureabstract_45F6F88474006B94EE15DCADE90F0A0C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">No documentation exists for this element</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_Litigationandassertedclaimsdisclosureabstract" xlink:label="loc_rmbs_Litigationandassertedclaimsdisclosureabstract_45F6F88474006B94EE15DCADE90F0A0C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_Litigationandassertedclaimsdisclosureabstract_45F6F88474006B94EE15DCADE90F0A0C" xlink:to="lab_rmbs_Litigationandassertedclaimsdisclosureabstract_45F6F88474006B94EE15DCADE90F0A0C" xlink:type="arc" />
    <link:label id="lab_rmbs_LitigationAndAssertedClaimsTextBlock_8E4F3C44060FC9122415DCADE90FBB64_terseLabel_en-US" xlink:label="lab_rmbs_LitigationAndAssertedClaimsTextBlock_8E4F3C44060FC9122415DCADE90FBB64" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Litigation and Asserted Claims</link:label>
    <link:label id="lab_rmbs_LitigationAndAssertedClaimsTextBlock_8E4F3C44060FC9122415DCADE90FBB64_label_en-US" xlink:label="lab_rmbs_LitigationAndAssertedClaimsTextBlock_8E4F3C44060FC9122415DCADE90FBB64" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Litigation and Asserted Claims [Text Block]</link:label>
    <link:label id="lab_rmbs_LitigationAndAssertedClaimsTextBlock_8E4F3C44060FC9122415DCADE90FBB64_documentation_en-US" xlink:label="lab_rmbs_LitigationAndAssertedClaimsTextBlock_8E4F3C44060FC9122415DCADE90FBB64" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The element represents entire disclosure for legal proceedings, litigation, and other regulatory matters.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_LitigationAndAssertedClaimsTextBlock" xlink:label="loc_rmbs_LitigationAndAssertedClaimsTextBlock_8E4F3C44060FC9122415DCADE90FBB64" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_LitigationAndAssertedClaimsTextBlock_8E4F3C44060FC9122415DCADE90FBB64" xlink:to="lab_rmbs_LitigationAndAssertedClaimsTextBlock_8E4F3C44060FC9122415DCADE90FBB64" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquityNoteAbstract_75F03A58F35035286E34DCADE9AB1BBD_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityNoteAbstract_75F03A58F35035286E34DCADE9AB1BBD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity Note [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockholdersEquityNoteAbstract" xlink:label="loc_us-gaap_StockholdersEquityNoteAbstract_75F03A58F35035286E34DCADE9AB1BBD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityNoteAbstract_75F03A58F35035286E34DCADE9AB1BBD" xlink:to="lab_us-gaap_StockholdersEquityNoteAbstract_75F03A58F35035286E34DCADE9AB1BBD" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_828A7B5129F72A5DD95BDCADE9AB4DEB_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_828A7B5129F72A5DD95BDCADE9AB4DEB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stockholders' Equity</link:label>
    <link:label id="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_828A7B5129F72A5DD95BDCADE9AB4DEB_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_828A7B5129F72A5DD95BDCADE9AB4DEB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity Note Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:label="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock_828A7B5129F72A5DD95BDCADE9AB4DEB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock_828A7B5129F72A5DD95BDCADE9AB4DEB" xlink:to="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_828A7B5129F72A5DD95BDCADE9AB4DEB" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_069E924F204AFAC73D3391DCF262A6D8_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_069E924F204AFAC73D3391DCF262A6D8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Segment Reporting Information, by Segment [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_069E924F204AFAC73D3391DCF262A6D8_label_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_069E924F204AFAC73D3391DCF262A6D8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Segment Reporting Information, by Segment [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_069E924F204AFAC73D3391DCF262A6D8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_069E924F204AFAC73D3391DCF262A6D8" xlink:to="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_069E924F204AFAC73D3391DCF262A6D8" xlink:type="arc" />
    <link:label id="lab_rmbs_MidSegmentMember_BB886973B9052C6CFA9E91DCF2624450_terseLabel_en-US" xlink:label="lab_rmbs_MidSegmentMember_BB886973B9052C6CFA9E91DCF2624450" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">MID Segment</link:label>
    <link:label id="lab_rmbs_MidSegmentMember_BB886973B9052C6CFA9E91DCF2624450_label_en-US" xlink:label="lab_rmbs_MidSegmentMember_BB886973B9052C6CFA9E91DCF2624450" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">MID Segment [Member]</link:label>
    <link:label id="lab_rmbs_MidSegmentMember_BB886973B9052C6CFA9E91DCF2624450_documentation_en-US" xlink:label="lab_rmbs_MidSegmentMember_BB886973B9052C6CFA9E91DCF2624450" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">MID Segment [Member]</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_MidSegmentMember" xlink:label="loc_rmbs_MidSegmentMember_BB886973B9052C6CFA9E91DCF2624450" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_MidSegmentMember_BB886973B9052C6CFA9E91DCF2624450" xlink:to="lab_rmbs_MidSegmentMember_BB886973B9052C6CFA9E91DCF2624450" xlink:type="arc" />
    <link:label id="lab_rmbs_CriMember_598630B6CC9D1B00FB2491DCF262DBE1_verboseLabel_en-US" xlink:label="lab_rmbs_CriMember_598630B6CC9D1B00FB2491DCF262DBE1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">CRI Segment</link:label>
    <link:label id="lab_rmbs_CriMember_598630B6CC9D1B00FB2491DCF262DBE1_label_en-US" xlink:label="lab_rmbs_CriMember_598630B6CC9D1B00FB2491DCF262DBE1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">CRI [Member]</link:label>
    <link:label id="lab_rmbs_CriMember_598630B6CC9D1B00FB2491DCF262DBE1_documentation_en-US" xlink:label="lab_rmbs_CriMember_598630B6CC9D1B00FB2491DCF262DBE1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The Cryptography Research, Inc reporting unit, focuses on patented innovations and solutions for content protection, network security, anti-counterfeiting and financial services. This reporting unit was acquired by the company.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_CriMember" xlink:label="loc_rmbs_CriMember_598630B6CC9D1B00FB2491DCF262DBE1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_CriMember_598630B6CC9D1B00FB2491DCF262DBE1" xlink:to="lab_rmbs_CriMember_598630B6CC9D1B00FB2491DCF262DBE1" xlink:type="arc" />
    <link:label id="lab_rmbs_CtoSegmentMember_2D03CAFA99377F8D95B191DCF262432F_terseLabel_en-US" xlink:label="lab_rmbs_CtoSegmentMember_2D03CAFA99377F8D95B191DCF262432F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">CTO Segment</link:label>
    <link:label id="lab_rmbs_CtoSegmentMember_2D03CAFA99377F8D95B191DCF262432F_label_en-US" xlink:label="lab_rmbs_CtoSegmentMember_2D03CAFA99377F8D95B191DCF262432F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">CTO Segment [Member]</link:label>
    <link:label id="lab_rmbs_CtoSegmentMember_2D03CAFA99377F8D95B191DCF262432F_documentation_en-US" xlink:label="lab_rmbs_CtoSegmentMember_2D03CAFA99377F8D95B191DCF262432F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">CTO Segment [Member]</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_CtoSegmentMember" xlink:label="loc_rmbs_CtoSegmentMember_2D03CAFA99377F8D95B191DCF262432F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_CtoSegmentMember_2D03CAFA99377F8D95B191DCF262432F" xlink:to="lab_rmbs_CtoSegmentMember_2D03CAFA99377F8D95B191DCF262432F" xlink:type="arc" />
    <link:label id="lab_us-gaap_AllOtherSegmentsMember_829B3E2A472B6822B1A491DCF262BA3E_terseLabel_en-US" xlink:label="lab_us-gaap_AllOtherSegmentsMember_829B3E2A472B6822B1A491DCF262BA3E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
    <link:label id="lab_us-gaap_AllOtherSegmentsMember_829B3E2A472B6822B1A491DCF262BA3E_label_en-US" xlink:label="lab_us-gaap_AllOtherSegmentsMember_829B3E2A472B6822B1A491DCF262BA3E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Segments [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AllOtherSegmentsMember" xlink:label="loc_us-gaap_AllOtherSegmentsMember_829B3E2A472B6822B1A491DCF262BA3E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AllOtherSegmentsMember_829B3E2A472B6822B1A491DCF262BA3E" xlink:to="lab_us-gaap_AllOtherSegmentsMember_829B3E2A472B6822B1A491DCF262BA3E" xlink:type="arc" />
    <link:label id="lab_us-gaap_MaterialReconcilingItemsMember_2BE84B735C8E506594C491DCF262DDFB_terseLabel_en-US" xlink:label="lab_us-gaap_MaterialReconcilingItemsMember_2BE84B735C8E506594C491DCF262DDFB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reconciling Items</link:label>
    <link:label id="lab_us-gaap_MaterialReconcilingItemsMember_2BE84B735C8E506594C491DCF262DDFB_label_en-US" xlink:label="lab_us-gaap_MaterialReconcilingItemsMember_2BE84B735C8E506594C491DCF262DDFB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reconciling Items [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MaterialReconcilingItemsMember" xlink:label="loc_us-gaap_MaterialReconcilingItemsMember_2BE84B735C8E506594C491DCF262DDFB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MaterialReconcilingItemsMember_2BE84B735C8E506594C491DCF262DDFB" xlink:to="lab_us-gaap_MaterialReconcilingItemsMember_2BE84B735C8E506594C491DCF262DDFB" xlink:type="arc" />
    <link:label id="lab_us-gaap_SegmentReportingInformationLineItems_B5AAD353C48D58F024D491DCF2627A24_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingInformationLineItems_B5AAD353C48D58F024D491DCF2627A24" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial information of business segments</link:label>
    <link:label id="lab_us-gaap_SegmentReportingInformationLineItems_B5AAD353C48D58F024D491DCF2627A24_label_en-US" xlink:label="lab_us-gaap_SegmentReportingInformationLineItems_B5AAD353C48D58F024D491DCF2627A24" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reporting Information [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_B5AAD353C48D58F024D491DCF2627A24" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_B5AAD353C48D58F024D491DCF2627A24" xlink:to="lab_us-gaap_SegmentReportingInformationLineItems_B5AAD353C48D58F024D491DCF2627A24" xlink:type="arc" />
    <link:label id="lab_rmbs_OperatingExpensesSegment_C6955385FD40749A43F691DCF2628E4E_terseLabel_en-US" xlink:label="lab_rmbs_OperatingExpensesSegment_C6955385FD40749A43F691DCF2628E4E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segment operating expenses</link:label>
    <link:label id="lab_rmbs_OperatingExpensesSegment_C6955385FD40749A43F691DCF2628E4E_label_en-US" xlink:label="lab_rmbs_OperatingExpensesSegment_C6955385FD40749A43F691DCF2628E4E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Expenses, Segment</link:label>
    <link:label id="lab_rmbs_OperatingExpensesSegment_C6955385FD40749A43F691DCF2628E4E_documentation_en-US" xlink:label="lab_rmbs_OperatingExpensesSegment_C6955385FD40749A43F691DCF2628E4E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Operating Expenses, Segment</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_OperatingExpensesSegment" xlink:label="loc_rmbs_OperatingExpensesSegment_C6955385FD40749A43F691DCF2628E4E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_OperatingExpensesSegment_C6955385FD40749A43F691DCF2628E4E" xlink:to="lab_rmbs_OperatingExpensesSegment_C6955385FD40749A43F691DCF2628E4E" xlink:type="arc" />
    <link:label id="lab_rmbs_SegmentOperatingIncomeLoss_39CC9A49379127C13EFE91DCF2628876_totalLabel_en-US" xlink:label="lab_rmbs_SegmentOperatingIncomeLoss_39CC9A49379127C13EFE91DCF2628876" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Segment operating income (loss)</link:label>
    <link:label id="lab_rmbs_SegmentOperatingIncomeLoss_39CC9A49379127C13EFE91DCF2628876_label_en-US" xlink:label="lab_rmbs_SegmentOperatingIncomeLoss_39CC9A49379127C13EFE91DCF2628876" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Operating Income (Loss)</link:label>
    <link:label id="lab_rmbs_SegmentOperatingIncomeLoss_39CC9A49379127C13EFE91DCF2628876_documentation_en-US" xlink:label="lab_rmbs_SegmentOperatingIncomeLoss_39CC9A49379127C13EFE91DCF2628876" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Total operating income loss for reporting segments.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_SegmentOperatingIncomeLoss" xlink:label="loc_rmbs_SegmentOperatingIncomeLoss_39CC9A49379127C13EFE91DCF2628876" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_SegmentOperatingIncomeLoss_39CC9A49379127C13EFE91DCF2628876" xlink:to="lab_rmbs_SegmentOperatingIncomeLoss_39CC9A49379127C13EFE91DCF2628876" xlink:type="arc" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_23441C602397AC1AA6FC91DCF2627D2F" xlink:type="locator" />
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    <link:label id="lab_us-gaap_NonoperatingIncomeExpense_17AF4FC7BBB60AC554B391DCF262B037_verboseLabel_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpense_17AF4FC7BBB60AC554B391DCF262B037" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Interest and other income (expense), net</link:label>
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    <link:label id="lab_us-gaap_ScheduleOfGoodwillTable_5C5E49AF1EBA9121B2CE91DC8E053F07_label_en-US" xlink:label="lab_us-gaap_ScheduleOfGoodwillTable_5C5E49AF1EBA9121B2CE91DC8E053F07" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Goodwill [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfGoodwillTable" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_5C5E49AF1EBA9121B2CE91DC8E053F07" xlink:type="locator" />
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    <link:label id="lab_rmbs_CriMember_783B6DDE9F48709F33A191DC8E0577D1_terseLabel_en-US" xlink:label="lab_rmbs_CriMember_783B6DDE9F48709F33A191DC8E0577D1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">CRI Segment</link:label>
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    <link:label id="lab_us-gaap_GoodwillLineItems_C5E654BF23DB0097371391DC8E05C442_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillLineItems_C5E654BF23DB0097371391DC8E05C442" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
    <link:label id="lab_us-gaap_GoodwillLineItems_C5E654BF23DB0097371391DC8E05C442_label_en-US" xlink:label="lab_us-gaap_GoodwillLineItems_C5E654BF23DB0097371391DC8E05C442" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GoodwillLineItems" xlink:label="loc_us-gaap_GoodwillLineItems_C5E654BF23DB0097371391DC8E05C442" xlink:type="locator" />
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    <link:label id="lab_us-gaap_GoodwillGross_2440361E9FEAFD87C8BD91DC8E05475E_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillGross_2440361E9FEAFD87C8BD91DC8E05475E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gross Carrying Amount</link:label>
    <link:label id="lab_us-gaap_GoodwillGross_2440361E9FEAFD87C8BD91DC8E05475E_label_en-US" xlink:label="lab_us-gaap_GoodwillGross_2440361E9FEAFD87C8BD91DC8E05475E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GoodwillGross" xlink:label="loc_us-gaap_GoodwillGross_2440361E9FEAFD87C8BD91DC8E05475E" xlink:type="locator" />
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    <link:label id="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_8B8D78678DD063B794B191DC8E05286D_label_en-US" xlink:label="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_8B8D78678DD063B794B191DC8E05286D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill, Impaired, Accumulated Impairment Loss</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss" xlink:label="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_8B8D78678DD063B794B191DC8E05286D" xlink:type="locator" />
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    <link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_B0FDB8286675FA1D1FFA8BF8FED58EA9_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_B0FDB8286675FA1D1FFA8BF8FED58EA9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commitments and Contingencies Disclosure [Abstract]</link:label>
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    <link:label id="lab_rmbs_ContractualObligationTable_33B60F54AA70EF7561968BF8FED5894C_label_en-US" xlink:label="lab_rmbs_ContractualObligationTable_33B60F54AA70EF7561968BF8FED5894C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contractual Obligation [Table]</link:label>
    <link:label id="lab_rmbs_ContractualObligationTable_33B60F54AA70EF7561968BF8FED5894C_documentation_en-US" xlink:label="lab_rmbs_ContractualObligationTable_33B60F54AA70EF7561968BF8FED5894C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule reflecting each contractual obligation from which amounts are due.</link:label>
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    <link:label id="lab_rmbs_ContractualObligationAxis_10BEFB9824CDC27B89B98BF8FED5827D_terseLabel_en-US" xlink:label="lab_rmbs_ContractualObligationAxis_10BEFB9824CDC27B89B98BF8FED5827D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contractual Obligation [Axis]</link:label>
    <link:label id="lab_rmbs_ContractualObligationAxis_10BEFB9824CDC27B89B98BF8FED5827D_label_en-US" xlink:label="lab_rmbs_ContractualObligationAxis_10BEFB9824CDC27B89B98BF8FED5827D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contractual Obligation [Axis]</link:label>
    <link:label id="lab_rmbs_ContractualObligationAxis_10BEFB9824CDC27B89B98BF8FED5827D_documentation_en-US" xlink:label="lab_rmbs_ContractualObligationAxis_10BEFB9824CDC27B89B98BF8FED5827D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Contractual obligation amount arising from different contracts.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_ContractualObligationAxis" xlink:label="loc_rmbs_ContractualObligationAxis_10BEFB9824CDC27B89B98BF8FED5827D" xlink:type="locator" />
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    <link:label id="lab_rmbs_ContractualObligationUnderMultipleAgreementDomain_5D8B80C048427885EF788BF8FED510A0_terseLabel_en-US" xlink:label="lab_rmbs_ContractualObligationUnderMultipleAgreementDomain_5D8B80C048427885EF788BF8FED510A0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contractual Obligation under Multiple Agreement [Domain]</link:label>
    <link:label id="lab_rmbs_ContractualObligationUnderMultipleAgreementDomain_5D8B80C048427885EF788BF8FED510A0_label_en-US" xlink:label="lab_rmbs_ContractualObligationUnderMultipleAgreementDomain_5D8B80C048427885EF788BF8FED510A0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contractual Obligation under Multiple Agreement [Domain]</link:label>
    <link:label id="lab_rmbs_ContractualObligationUnderMultipleAgreementDomain_5D8B80C048427885EF788BF8FED510A0_documentation_en-US" xlink:label="lab_rmbs_ContractualObligationUnderMultipleAgreementDomain_5D8B80C048427885EF788BF8FED510A0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Name of the different contractual obligations which include the imputed financing obligation, leases software licenses, convertible notes, and interest payments related to convertible notes.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_ContractualObligationUnderMultipleAgreementDomain" xlink:label="loc_rmbs_ContractualObligationUnderMultipleAgreementDomain_5D8B80C048427885EF788BF8FED510A0" xlink:type="locator" />
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    <link:label id="lab_rmbs_ImputedFinancingObligationMember_E0EBDF0ECE2D10BE5E8D8BF8FED537E5_terseLabel_en-US" xlink:label="lab_rmbs_ImputedFinancingObligationMember_E0EBDF0ECE2D10BE5E8D8BF8FED537E5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Imputed financing obligation</link:label>
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    <link:label id="lab_rmbs_ImputedFinancingObligationMember_E0EBDF0ECE2D10BE5E8D8BF8FED537E5_documentation_en-US" xlink:label="lab_rmbs_ImputedFinancingObligationMember_E0EBDF0ECE2D10BE5E8D8BF8FED537E5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the imputed financing obligation under the FASB authoritative guidance.</link:label>
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    <link:label id="lab_us-gaap_LeasesAcquiredInPlaceMember_4E9D4C34EBD8919591508BF8FED5B495_terseLabel_en-US" xlink:label="lab_us-gaap_LeasesAcquiredInPlaceMember_4E9D4C34EBD8919591508BF8FED5B495" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Leases and other contractual obligations</link:label>
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    <link:label id="lab_us-gaap_SoftwareLicenseArrangementMember_B78EBEA627483F079C318BF8FED5E3D4_terseLabel_en-US" xlink:label="lab_us-gaap_SoftwareLicenseArrangementMember_B78EBEA627483F079C318BF8FED5E3D4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Software licenses</link:label>
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    <link:label id="lab_rmbs_BusinessAcquisitionRetentionBonusPayableMember_31224581734DC8ADDA538BF8FED5CC42_terseLabel_en-US" xlink:label="lab_rmbs_BusinessAcquisitionRetentionBonusPayableMember_31224581734DC8ADDA538BF8FED5CC42" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Acquisition retention bonuses</link:label>
    <link:label id="lab_rmbs_BusinessAcquisitionRetentionBonusPayableMember_31224581734DC8ADDA538BF8FED5CC42_label_en-US" xlink:label="lab_rmbs_BusinessAcquisitionRetentionBonusPayableMember_31224581734DC8ADDA538BF8FED5CC42" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition, Retention Bonus Payable [Member]</link:label>
    <link:label id="lab_rmbs_BusinessAcquisitionRetentionBonusPayableMember_31224581734DC8ADDA538BF8FED5CC42_documentation_en-US" xlink:label="lab_rmbs_BusinessAcquisitionRetentionBonusPayableMember_31224581734DC8ADDA538BF8FED5CC42" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the retention bonus payable to certain employees and contractors.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_BusinessAcquisitionRetentionBonusPayableMember" xlink:label="loc_rmbs_BusinessAcquisitionRetentionBonusPayableMember_31224581734DC8ADDA538BF8FED5CC42" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_BusinessAcquisitionRetentionBonusPayableMember_31224581734DC8ADDA538BF8FED5CC42" xlink:to="lab_rmbs_BusinessAcquisitionRetentionBonusPayableMember_31224581734DC8ADDA538BF8FED5CC42" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConvertibleNotesPayableMember_B5B3362BAA216E8190078BF8FED500E5_terseLabel_en-US" xlink:label="lab_us-gaap_ConvertibleNotesPayableMember_B5B3362BAA216E8190078BF8FED500E5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Convertible notes</link:label>
    <link:label id="lab_us-gaap_ConvertibleNotesPayableMember_B5B3362BAA216E8190078BF8FED500E5_label_en-US" xlink:label="lab_us-gaap_ConvertibleNotesPayableMember_B5B3362BAA216E8190078BF8FED500E5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Convertible Notes Payable [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConvertibleNotesPayableMember" xlink:label="loc_us-gaap_ConvertibleNotesPayableMember_B5B3362BAA216E8190078BF8FED500E5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConvertibleNotesPayableMember_B5B3362BAA216E8190078BF8FED500E5" xlink:to="lab_us-gaap_ConvertibleNotesPayableMember_B5B3362BAA216E8190078BF8FED500E5" xlink:type="arc" />
    <link:label id="lab_rmbs_InterestPaymentRelatedToConvertibleNotesMember_DBF96DC4444DDC87DB0D8BF8FED51DC7_terseLabel_en-US" xlink:label="lab_rmbs_InterestPaymentRelatedToConvertibleNotesMember_DBF96DC4444DDC87DB0D8BF8FED51DC7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest payments related to convertible notes</link:label>
    <link:label id="lab_rmbs_InterestPaymentRelatedToConvertibleNotesMember_DBF96DC4444DDC87DB0D8BF8FED51DC7_label_en-US" xlink:label="lab_rmbs_InterestPaymentRelatedToConvertibleNotesMember_DBF96DC4444DDC87DB0D8BF8FED51DC7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Payment Related to Convertible Notes [Member]</link:label>
    <link:label id="lab_rmbs_InterestPaymentRelatedToConvertibleNotesMember_DBF96DC4444DDC87DB0D8BF8FED51DC7_documentation_en-US" xlink:label="lab_rmbs_InterestPaymentRelatedToConvertibleNotesMember_DBF96DC4444DDC87DB0D8BF8FED51DC7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents the payment of interest related to convertible notes.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_InterestPaymentRelatedToConvertibleNotesMember" xlink:label="loc_rmbs_InterestPaymentRelatedToConvertibleNotesMember_DBF96DC4444DDC87DB0D8BF8FED51DC7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_InterestPaymentRelatedToConvertibleNotesMember_DBF96DC4444DDC87DB0D8BF8FED51DC7" xlink:to="lab_rmbs_InterestPaymentRelatedToConvertibleNotesMember_DBF96DC4444DDC87DB0D8BF8FED51DC7" xlink:type="arc" />
    <link:label id="lab_rmbs_ContractualObligationLineItems_94C5C8A9BB1E951855328BF8FED5124E_terseLabel_en-US" xlink:label="lab_rmbs_ContractualObligationLineItems_94C5C8A9BB1E951855328BF8FED5124E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contractual obligations</link:label>
    <link:label id="lab_rmbs_ContractualObligationLineItems_94C5C8A9BB1E951855328BF8FED5124E_label_en-US" xlink:label="lab_rmbs_ContractualObligationLineItems_94C5C8A9BB1E951855328BF8FED5124E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contractual Obligation [Line Items]</link:label>
    <link:label id="lab_rmbs_ContractualObligationLineItems_94C5C8A9BB1E951855328BF8FED5124E_documentation_en-US" xlink:label="lab_rmbs_ContractualObligationLineItems_94C5C8A9BB1E951855328BF8FED5124E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Line item represents the contractual obligation included in table.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_ContractualObligationLineItems" xlink:label="loc_rmbs_ContractualObligationLineItems_94C5C8A9BB1E951855328BF8FED5124E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_ContractualObligationLineItems_94C5C8A9BB1E951855328BF8FED5124E" xlink:to="lab_rmbs_ContractualObligationLineItems_94C5C8A9BB1E951855328BF8FED5124E" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractualObligation_1884E971923B781044C38BF8FED5983A_totalLabel_en-US" xlink:label="lab_us-gaap_ContractualObligation_1884E971923B781044C38BF8FED5983A" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Contractual Obligation</link:label>
    <link:label id="lab_us-gaap_ContractualObligation_1884E971923B781044C38BF8FED5983A_label_en-US" xlink:label="lab_us-gaap_ContractualObligation_1884E971923B781044C38BF8FED5983A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contractual Obligation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ContractualObligation" xlink:label="loc_us-gaap_ContractualObligation_1884E971923B781044C38BF8FED5983A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractualObligation_1884E971923B781044C38BF8FED5983A" xlink:to="lab_us-gaap_ContractualObligation_1884E971923B781044C38BF8FED5983A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractualObligationFutureMinimumPaymentsDueRemainderOfFiscalYear_9E840253F7E4F2378BF68BF8FED5A890_terseLabel_en-US" xlink:label="lab_us-gaap_ContractualObligationFutureMinimumPaymentsDueRemainderOfFiscalYear_9E840253F7E4F2378BF68BF8FED5A890" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remainder of 2014</link:label>
    <link:label id="lab_us-gaap_ContractualObligationFutureMinimumPaymentsDueRemainderOfFiscalYear_9E840253F7E4F2378BF68BF8FED5A890_label_en-US" xlink:label="lab_us-gaap_ContractualObligationFutureMinimumPaymentsDueRemainderOfFiscalYear_9E840253F7E4F2378BF68BF8FED5A890" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contractual Obligation, Future Minimum Payments Due, Remainder of Fiscal Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ContractualObligationFutureMinimumPaymentsDueRemainderOfFiscalYear" xlink:label="loc_us-gaap_ContractualObligationFutureMinimumPaymentsDueRemainderOfFiscalYear_9E840253F7E4F2378BF68BF8FED5A890" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractualObligationFutureMinimumPaymentsDueRemainderOfFiscalYear_9E840253F7E4F2378BF68BF8FED5A890" xlink:to="lab_us-gaap_ContractualObligationFutureMinimumPaymentsDueRemainderOfFiscalYear_9E840253F7E4F2378BF68BF8FED5A890" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractualObligationDueInNextTwelveMonths_6CBA33AB6B4BF848D1E18BF8FED58029_terseLabel_en-US" xlink:label="lab_us-gaap_ContractualObligationDueInNextTwelveMonths_6CBA33AB6B4BF848D1E18BF8FED58029" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2015</link:label>
    <link:label id="lab_us-gaap_ContractualObligationDueInNextTwelveMonths_6CBA33AB6B4BF848D1E18BF8FED58029_label_en-US" xlink:label="lab_us-gaap_ContractualObligationDueInNextTwelveMonths_6CBA33AB6B4BF848D1E18BF8FED58029" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contractual Obligation, Due in Next Twelve Months</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ContractualObligationDueInNextTwelveMonths" xlink:label="loc_us-gaap_ContractualObligationDueInNextTwelveMonths_6CBA33AB6B4BF848D1E18BF8FED58029" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractualObligationDueInNextTwelveMonths_6CBA33AB6B4BF848D1E18BF8FED58029" xlink:to="lab_us-gaap_ContractualObligationDueInNextTwelveMonths_6CBA33AB6B4BF848D1E18BF8FED58029" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractualObligationDueInSecondYear_F8CEA860AB883F8D902D8BF8FED65420_terseLabel_en-US" xlink:label="lab_us-gaap_ContractualObligationDueInSecondYear_F8CEA860AB883F8D902D8BF8FED65420" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2016</link:label>
    <link:label id="lab_us-gaap_ContractualObligationDueInSecondYear_F8CEA860AB883F8D902D8BF8FED65420_label_en-US" xlink:label="lab_us-gaap_ContractualObligationDueInSecondYear_F8CEA860AB883F8D902D8BF8FED65420" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contractual Obligation, Due in Second Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ContractualObligationDueInSecondYear" xlink:label="loc_us-gaap_ContractualObligationDueInSecondYear_F8CEA860AB883F8D902D8BF8FED65420" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractualObligationDueInSecondYear_F8CEA860AB883F8D902D8BF8FED65420" xlink:to="lab_us-gaap_ContractualObligationDueInSecondYear_F8CEA860AB883F8D902D8BF8FED65420" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractualObligationDueInThirdYear_D093A997D3C246EB20E08BF8FED69922_terseLabel_en-US" xlink:label="lab_us-gaap_ContractualObligationDueInThirdYear_D093A997D3C246EB20E08BF8FED69922" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2017</link:label>
    <link:label id="lab_us-gaap_ContractualObligationDueInThirdYear_D093A997D3C246EB20E08BF8FED69922_label_en-US" xlink:label="lab_us-gaap_ContractualObligationDueInThirdYear_D093A997D3C246EB20E08BF8FED69922" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contractual Obligation, Due in Third Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ContractualObligationDueInThirdYear" xlink:label="loc_us-gaap_ContractualObligationDueInThirdYear_D093A997D3C246EB20E08BF8FED69922" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractualObligationDueInThirdYear_D093A997D3C246EB20E08BF8FED69922" xlink:to="lab_us-gaap_ContractualObligationDueInThirdYear_D093A997D3C246EB20E08BF8FED69922" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractualObligationDueInFourthYear_F8757D846D68F568AF828BF8FED6C46E_terseLabel_en-US" xlink:label="lab_us-gaap_ContractualObligationDueInFourthYear_F8757D846D68F568AF828BF8FED6C46E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2018</link:label>
    <link:label id="lab_us-gaap_ContractualObligationDueInFourthYear_F8757D846D68F568AF828BF8FED6C46E_label_en-US" xlink:label="lab_us-gaap_ContractualObligationDueInFourthYear_F8757D846D68F568AF828BF8FED6C46E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contractual Obligation, Due in Fourth Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ContractualObligationDueInFourthYear" xlink:label="loc_us-gaap_ContractualObligationDueInFourthYear_F8757D846D68F568AF828BF8FED6C46E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractualObligationDueInFourthYear_F8757D846D68F568AF828BF8FED6C46E" xlink:to="lab_us-gaap_ContractualObligationDueInFourthYear_F8757D846D68F568AF828BF8FED6C46E" xlink:type="arc" />
    <link:label id="lab_rmbs_ContractualObligationPaymentsDueAfterFourthFullFiscalYear_20052B3E1328BD12061E8BF8FED6ED65_terseLabel_en-US" xlink:label="lab_rmbs_ContractualObligationPaymentsDueAfterFourthFullFiscalYear_20052B3E1328BD12061E8BF8FED6ED65" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Thereafter</link:label>
    <link:label id="lab_rmbs_ContractualObligationPaymentsDueAfterFourthFullFiscalYear_20052B3E1328BD12061E8BF8FED6ED65_label_en-US" xlink:label="lab_rmbs_ContractualObligationPaymentsDueAfterFourthFullFiscalYear_20052B3E1328BD12061E8BF8FED6ED65" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contractual Obligation, Payments Due after Fourth Full Fiscal Year</link:label>
    <link:label id="lab_rmbs_ContractualObligationPaymentsDueAfterFourthFullFiscalYear_20052B3E1328BD12061E8BF8FED6ED65_documentation_en-US" xlink:label="lab_rmbs_ContractualObligationPaymentsDueAfterFourthFullFiscalYear_20052B3E1328BD12061E8BF8FED6ED65" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of contractual obligation due after the fourth full fiscal year following the date of the most recent balance sheet.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_ContractualObligationPaymentsDueAfterFourthFullFiscalYear" xlink:label="loc_rmbs_ContractualObligationPaymentsDueAfterFourthFullFiscalYear_20052B3E1328BD12061E8BF8FED6ED65" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_ContractualObligationPaymentsDueAfterFourthFullFiscalYear_20052B3E1328BD12061E8BF8FED6ED65" xlink:to="lab_rmbs_ContractualObligationPaymentsDueAfterFourthFullFiscalYear_20052B3E1328BD12061E8BF8FED6ED65" xlink:type="arc" />
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefits_9D6ECC63D9995F07D0CE8BF8FED6C8CF_terseLabel_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefits_9D6ECC63D9995F07D0CE8BF8FED6C8CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrecognized tax benefits</link:label>
    <link:label id="lab_us-gaap_UnrecognizedTaxBenefits_9D6ECC63D9995F07D0CE8BF8FED6C8CF_label_en-US" xlink:label="lab_us-gaap_UnrecognizedTaxBenefits_9D6ECC63D9995F07D0CE8BF8FED6C8CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unrecognized Tax Benefits</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_UnrecognizedTaxBenefits" xlink:label="loc_us-gaap_UnrecognizedTaxBenefits_9D6ECC63D9995F07D0CE8BF8FED6C8CF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnrecognizedTaxBenefits_9D6ECC63D9995F07D0CE8BF8FED6C8CF" xlink:to="lab_us-gaap_UnrecognizedTaxBenefits_9D6ECC63D9995F07D0CE8BF8FED6C8CF" xlink:type="arc" />
    <link:label id="lab_rmbs_UnrecognizedTaxBenefitsDeferredTaxAssetsNoncurrentGross_9AB99BEEECE5DC6BEC778BF8FED60617_terseLabel_en-US" xlink:label="lab_rmbs_UnrecognizedTaxBenefitsDeferredTaxAssetsNoncurrentGross_9AB99BEEECE5DC6BEC778BF8FED60617" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrecognized tax benefits, reduction of long-term deferred tax assets</link:label>
    <link:label id="lab_rmbs_UnrecognizedTaxBenefitsDeferredTaxAssetsNoncurrentGross_9AB99BEEECE5DC6BEC778BF8FED60617_label_en-US" xlink:label="lab_rmbs_UnrecognizedTaxBenefitsDeferredTaxAssetsNoncurrentGross_9AB99BEEECE5DC6BEC778BF8FED60617" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unrecognized Tax Benefits, Deferred Tax Assets, Noncurrent, Gross</link:label>
    <link:label id="lab_rmbs_UnrecognizedTaxBenefitsDeferredTaxAssetsNoncurrentGross_9AB99BEEECE5DC6BEC778BF8FED60617_documentation_en-US" xlink:label="lab_rmbs_UnrecognizedTaxBenefitsDeferredTaxAssetsNoncurrentGross_9AB99BEEECE5DC6BEC778BF8FED60617" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the amount of unrecognized tax benefits which pertained to uncertain tax positions taken in tax returns and was recorded as a reduction of long-term deferred tax assets as of the balance sheet date, prior to reduction for federal tax benefit.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_UnrecognizedTaxBenefitsDeferredTaxAssetsNoncurrentGross" xlink:label="loc_rmbs_UnrecognizedTaxBenefitsDeferredTaxAssetsNoncurrentGross_9AB99BEEECE5DC6BEC778BF8FED60617" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_UnrecognizedTaxBenefitsDeferredTaxAssetsNoncurrentGross_9AB99BEEECE5DC6BEC778BF8FED60617" xlink:to="lab_rmbs_UnrecognizedTaxBenefitsDeferredTaxAssetsNoncurrentGross_9AB99BEEECE5DC6BEC778BF8FED60617" xlink:type="arc" />
    <link:label id="lab_rmbs_UnrecognizedTaxBenefitsAccruedIncomeTaxesNoncurrent_071051D5D6AE84854E938BF8FED6A63C_terseLabel_en-US" xlink:label="lab_rmbs_UnrecognizedTaxBenefitsAccruedIncomeTaxesNoncurrent_071051D5D6AE84854E938BF8FED6A63C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrecognized tax benefits included in long-term income taxes payable</link:label>
    <link:label id="lab_rmbs_UnrecognizedTaxBenefitsAccruedIncomeTaxesNoncurrent_071051D5D6AE84854E938BF8FED6A63C_label_en-US" xlink:label="lab_rmbs_UnrecognizedTaxBenefitsAccruedIncomeTaxesNoncurrent_071051D5D6AE84854E938BF8FED6A63C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unrecognized Tax Benefits Accrued Income Taxes Noncurrent</link:label>
    <link:label id="lab_rmbs_UnrecognizedTaxBenefitsAccruedIncomeTaxesNoncurrent_071051D5D6AE84854E938BF8FED6A63C_documentation_en-US" xlink:label="lab_rmbs_UnrecognizedTaxBenefitsAccruedIncomeTaxesNoncurrent_071051D5D6AE84854E938BF8FED6A63C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the amount of unrecognized tax benefits which pertained to uncertain tax positions taken in tax return and was included in long-term income taxes payable as of the balance date.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_UnrecognizedTaxBenefitsAccruedIncomeTaxesNoncurrent" xlink:label="loc_rmbs_UnrecognizedTaxBenefitsAccruedIncomeTaxesNoncurrent_071051D5D6AE84854E938BF8FED6A63C" xlink:type="locator" />
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    <link:label id="lab_rmbs_TermsOfNoncancellableLicenseAgreementMinimum_225E35E35A5D419CF26E8BF8FED6EA46_terseLabel_en-US" xlink:label="lab_rmbs_TermsOfNoncancellableLicenseAgreementMinimum_225E35E35A5D419CF26E8BF8FED6EA46" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Terms of noncancellable license agreement, minimum (in years)</link:label>
    <link:label id="lab_rmbs_TermsOfNoncancellableLicenseAgreementMinimum_225E35E35A5D419CF26E8BF8FED6EA46_label_en-US" xlink:label="lab_rmbs_TermsOfNoncancellableLicenseAgreementMinimum_225E35E35A5D419CF26E8BF8FED6EA46" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Terms of Noncancellable License Agreement, Minimum</link:label>
    <link:label id="lab_rmbs_TermsOfNoncancellableLicenseAgreementMinimum_225E35E35A5D419CF26E8BF8FED6EA46_documentation_en-US" xlink:label="lab_rmbs_TermsOfNoncancellableLicenseAgreementMinimum_225E35E35A5D419CF26E8BF8FED6EA46" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the minimum term in years for non-cancellable license agreements entered by the reporting entity with various software vendors.</link:label>
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    <link:label id="lab_rmbs_BusinessAcquisitionRemainingRetentionBonusPayable_AABF8A547209B7CE4CBE8BF8FED61A98_terseLabel_en-US" xlink:label="lab_rmbs_BusinessAcquisitionRemainingRetentionBonusPayable_AABF8A547209B7CE4CBE8BF8FED61A98" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Remaining CRI retention bonuses payable</link:label>
    <link:label id="lab_rmbs_BusinessAcquisitionRemainingRetentionBonusPayable_AABF8A547209B7CE4CBE8BF8FED61A98_label_en-US" xlink:label="lab_rmbs_BusinessAcquisitionRemainingRetentionBonusPayable_AABF8A547209B7CE4CBE8BF8FED61A98" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition, Remaining Retention Bonus Payable</link:label>
    <link:label id="lab_rmbs_BusinessAcquisitionRemainingRetentionBonusPayable_AABF8A547209B7CE4CBE8BF8FED61A98_documentation_en-US" xlink:label="lab_rmbs_BusinessAcquisitionRemainingRetentionBonusPayable_AABF8A547209B7CE4CBE8BF8FED61A98" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the remaining amount of retention bonuses payable for a significant acquisition as of the balance date.</link:label>
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    <link:label id="lab_us-gaap_LeaseAndRentalExpense_B393161675E9A8851C048BF8FED64DD8_terseLabel_en-US" xlink:label="lab_us-gaap_LeaseAndRentalExpense_B393161675E9A8851C048BF8FED64DD8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Rent expense</link:label>
    <link:label id="lab_us-gaap_LeaseAndRentalExpense_B393161675E9A8851C048BF8FED64DD8_label_en-US" xlink:label="lab_us-gaap_LeaseAndRentalExpense_B393161675E9A8851C048BF8FED64DD8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Rent Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LeaseAndRentalExpense" xlink:label="loc_us-gaap_LeaseAndRentalExpense_B393161675E9A8851C048BF8FED64DD8" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DeferredRentCreditNoncurrent_0A5A644563918470F57A8BF8FED6050D_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredRentCreditNoncurrent_0A5A644563918470F57A8BF8FED6050D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred rent</link:label>
    <link:label id="lab_us-gaap_DeferredRentCreditNoncurrent_0A5A644563918470F57A8BF8FED6050D_label_en-US" xlink:label="lab_us-gaap_DeferredRentCreditNoncurrent_0A5A644563918470F57A8BF8FED6050D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Rent Credit, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DeferredRentCreditNoncurrent" xlink:label="loc_us-gaap_DeferredRentCreditNoncurrent_0A5A644563918470F57A8BF8FED6050D" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_FAF8D85AF63228EC7998DCADE9DA16C3_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_FAF8D85AF63228EC7998DCADE9DA16C3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Computation of basic and diluted loss per share</link:label>
    <link:label id="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_FAF8D85AF63228EC7998DCADE9DA16C3_label_en-US" xlink:label="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_FAF8D85AF63228EC7998DCADE9DA16C3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_FAF8D85AF63228EC7998DCADE9DA16C3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_FAF8D85AF63228EC7998DCADE9DA16C3" xlink:to="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_FAF8D85AF63228EC7998DCADE9DA16C3" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementOfCashFlowsAbstract_AA687F3A40B7A3DFF099911FDE08A4B4_label_en-US" xlink:label="lab_us-gaap_StatementOfCashFlowsAbstract_AA687F3A40B7A3DFF099911FDE08A4B4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Cash Flows [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="loc_us-gaap_StatementOfCashFlowsAbstract_AA687F3A40B7A3DFF099911FDE08A4B4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_AA687F3A40B7A3DFF099911FDE08A4B4" xlink:to="lab_us-gaap_StatementOfCashFlowsAbstract_AA687F3A40B7A3DFF099911FDE08A4B4" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_8A533129CFBB49E54C6F911FDE089E15_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_8A533129CFBB49E54C6F911FDE089E15" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash flows from operating activities:</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_8A533129CFBB49E54C6F911FDE089E15_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_8A533129CFBB49E54C6F911FDE089E15" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_8A533129CFBB49E54C6F911FDE089E15" xlink:type="locator" />
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    <link:label id="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_1C64544EF57E5D2E0236911FDE084433_terseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_1C64544EF57E5D2E0236911FDE084433" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net income (loss)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_1C64544EF57E5D2E0236911FDE084433" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_1C64544EF57E5D2E0236911FDE084433" xlink:to="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_1C64544EF57E5D2E0236911FDE084433" xlink:type="arc" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_A4DDDAEEAAAD941F446A911FDE082335" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ShareBasedCompensation_E14526BB443BF0C9ECFC911FDE087636_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_E14526BB443BF0C9ECFC911FDE087636" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock-based compensation</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensation_E14526BB443BF0C9ECFC911FDE087636_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_E14526BB443BF0C9ECFC911FDE087636" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation</link:label>
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    <link:label id="lab_us-gaap_Depreciation_464D253BE490EA46C9A4911FDE08D9A6_terseLabel_en-US" xlink:label="lab_us-gaap_Depreciation_464D253BE490EA46C9A4911FDE08D9A6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Depreciation</link:label>
    <link:label id="lab_us-gaap_Depreciation_464D253BE490EA46C9A4911FDE08D9A6_label_en-US" xlink:label="lab_us-gaap_Depreciation_464D253BE490EA46C9A4911FDE08D9A6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Depreciation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Depreciation" xlink:label="loc_us-gaap_Depreciation_464D253BE490EA46C9A4911FDE08D9A6" xlink:type="locator" />
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    <link:label id="lab_us-gaap_AmortizationOfIntangibleAssets_EDAA8AB1AA43AF254F88911FDE08F98C_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfIntangibleAssets_EDAA8AB1AA43AF254F88911FDE08F98C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization of intangible assets</link:label>
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    <link:label id="lab_us-gaap_AmortizationOfFinancingCostsAndDiscounts_D5785D1799C6B8190C72911FDE08286E_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfFinancingCostsAndDiscounts_D5785D1799C6B8190C72911FDE08286E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-cash interest expense and amortization of convertible debt issuance costs</link:label>
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    <link:label id="lab_us-gaap_GainLossOnDispositionOfIntangibleAssets_90E4349BF1796B181E39911FDE087C70_negatedLabel_en-US" xlink:label="lab_us-gaap_GainLossOnDispositionOfIntangibleAssets_90E4349BF1796B181E39911FDE087C70" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Gain from sale of intellectual property</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_09C54F9D7CA2C2573586911FDE0878ED" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_D9029057AD700026ABFB911FDE089720" xlink:type="locator" />
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_D87139B4B9719BFD9076911FDE08C0F1_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_D87139B4B9719BFD9076911FDE08C0F1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash provided by operating activities</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities_37975D5B32B7E7C01B30911FDE17366C" xlink:to="lab_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities_37975D5B32B7E7C01B30911FDE17366C" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromSaleOfIntangibleAssets_8E96559E1B5ABA733935911FDE17BE21_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfIntangibleAssets_8E96559E1B5ABA733935911FDE17BE21" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from sale of intellectual property</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromSaleOfIntangibleAssets" xlink:label="loc_us-gaap_ProceedsFromSaleOfIntangibleAssets_8E96559E1B5ABA733935911FDE17BE21" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromSaleOfIntangibleAssets_8E96559E1B5ABA733935911FDE17BE21" xlink:to="lab_us-gaap_ProceedsFromSaleOfIntangibleAssets_8E96559E1B5ABA733935911FDE17BE21" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_83C2B3D35730DCFCE0E3911FDE17BD46_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_83C2B3D35730DCFCE0E3911FDE17BD46" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash used in investing activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_83C2B3D35730DCFCE0E3911FDE17BD46_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_83C2B3D35730DCFCE0E3911FDE17BD46" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities, Continuing Operations</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_83C2B3D35730DCFCE0E3911FDE17BD46" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_83C2B3D35730DCFCE0E3911FDE17BD46" xlink:type="arc" />
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_7786C8EC271EF80FB50F911FDE178F2C" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_7786C8EC271EF80FB50F911FDE178F2C" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_B58A0E7843EE6DFDF915911FDE17DF8D_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_B58A0E7843EE6DFDF915911FDE17DF8D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds received from issuance of common stock under employee stock plans</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_B58A0E7843EE6DFDF915911FDE17DF8D" xlink:to="lab_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_B58A0E7843EE6DFDF915911FDE17DF8D" xlink:type="arc" />
    <link:label id="lab_rmbs_PrincipalPaymentsAgainstLeaseFinancingObligation_E4D80B23A5B191F53D0B911FDE17FC6D_negatedLabel_en-US" xlink:label="lab_rmbs_PrincipalPaymentsAgainstLeaseFinancingObligation_E4D80B23A5B191F53D0B911FDE17FC6D" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Principal payments against lease financing obligation</link:label>
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    <link:label id="lab_rmbs_PaymentsUnderInstallment_F4EAF951101D62E91921911FDE17AD9E_documentation_en-US" xlink:label="lab_rmbs_PaymentsUnderInstallment_F4EAF951101D62E91921911FDE17AD9E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represent as Payments under installment payment arrangement.</link:label>
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInContinuingOperations_6594672D9BEBE446838A911FDE17FC8F_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInContinuingOperations_6594672D9BEBE446838A911FDE17FC8F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Continuing Operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetCashProvidedByUsedInContinuingOperations" xlink:label="loc_us-gaap_NetCashProvidedByUsedInContinuingOperations_6594672D9BEBE446838A911FDE17FC8F" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_62DC20E2B7B07738F35C911FDE172396" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ConcentrationRiskTypeDomain_07719916CFA66F90B2B26BCACC3DB5AF_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskTypeDomain_07719916CFA66F90B2B26BCACC3DB5AF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_07719916CFA66F90B2B26BCACC3DB5AF" xlink:type="locator" />
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    <link:label id="lab_us-gaap_CustomerConcentrationRiskMember_BEABD5323B035EE364036BCACC3DAF8B_terseLabel_en-US" xlink:label="lab_us-gaap_CustomerConcentrationRiskMember_BEABD5323B035EE364036BCACC3DAF8B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Customer Concentration Risk</link:label>
    <link:label id="lab_us-gaap_CustomerConcentrationRiskMember_BEABD5323B035EE364036BCACC3DAF8B_label_en-US" xlink:label="lab_us-gaap_CustomerConcentrationRiskMember_BEABD5323B035EE364036BCACC3DAF8B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customer Concentration Risk [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CustomerConcentrationRiskMember" xlink:label="loc_us-gaap_CustomerConcentrationRiskMember_BEABD5323B035EE364036BCACC3DAF8B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CustomerConcentrationRiskMember_BEABD5323B035EE364036BCACC3DAF8B" xlink:to="lab_us-gaap_CustomerConcentrationRiskMember_BEABD5323B035EE364036BCACC3DAF8B" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_39C60F71E52FDD4773A86BCACC3D6D36_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_39C60F71E52FDD4773A86BCACC3D6D36" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Concentration Risk by Benchmark [Axis]</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_39C60F71E52FDD4773A86BCACC3D6D36_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_39C60F71E52FDD4773A86BCACC3D6D36" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk Benchmark [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_39C60F71E52FDD4773A86BCACC3D6D36" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ConcentrationRiskBenchmarkDomain_473C98A85038F30E58246BCACC3DB00E_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskBenchmarkDomain_473C98A85038F30E58246BCACC3DB00E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Concentration Risk Benchmark [Domain]</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskBenchmarkDomain_473C98A85038F30E58246BCACC3DB00E_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskBenchmarkDomain_473C98A85038F30E58246BCACC3DB00E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk Benchmark [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_473C98A85038F30E58246BCACC3DB00E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_473C98A85038F30E58246BCACC3DB00E" xlink:to="lab_us-gaap_ConcentrationRiskBenchmarkDomain_473C98A85038F30E58246BCACC3DB00E" xlink:type="arc" />
    <link:label id="lab_rmbs_SalesNetMember_A1CDECF0C00A73B658C26BCACC3D260A_terseLabel_en-US" xlink:label="lab_rmbs_SalesNetMember_A1CDECF0C00A73B658C26BCACC3D260A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sales, net</link:label>
    <link:label id="lab_rmbs_SalesNetMember_A1CDECF0C00A73B658C26BCACC3D260A_label_en-US" xlink:label="lab_rmbs_SalesNetMember_A1CDECF0C00A73B658C26BCACC3D260A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sales Net [Member]</link:label>
    <link:label id="lab_rmbs_SalesNetMember_A1CDECF0C00A73B658C26BCACC3D260A_documentation_en-US" xlink:label="lab_rmbs_SalesNetMember_A1CDECF0C00A73B658C26BCACC3D260A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts member.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_SalesNetMember" xlink:label="loc_rmbs_SalesNetMember_A1CDECF0C00A73B658C26BCACC3D260A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_SalesNetMember_A1CDECF0C00A73B658C26BCACC3D260A" xlink:to="lab_rmbs_SalesNetMember_A1CDECF0C00A73B658C26BCACC3D260A" xlink:type="arc" />
    <link:label id="lab_us-gaap_MajorCustomersAxis_7D2B91535881C73165FD6BCACC3DBF6F_terseLabel_en-US" xlink:label="lab_us-gaap_MajorCustomersAxis_7D2B91535881C73165FD6BCACC3DBF6F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Major Customers [Axis]</link:label>
    <link:label id="lab_us-gaap_MajorCustomersAxis_7D2B91535881C73165FD6BCACC3DBF6F_label_en-US" xlink:label="lab_us-gaap_MajorCustomersAxis_7D2B91535881C73165FD6BCACC3DBF6F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customer [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MajorCustomersAxis" xlink:label="loc_us-gaap_MajorCustomersAxis_7D2B91535881C73165FD6BCACC3DBF6F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MajorCustomersAxis_7D2B91535881C73165FD6BCACC3DBF6F" xlink:to="lab_us-gaap_MajorCustomersAxis_7D2B91535881C73165FD6BCACC3DBF6F" xlink:type="arc" />
    <link:label id="lab_us-gaap_NameOfMajorCustomerDomain_B9273F6AADC0C598301B6BCACC3D6782_terseLabel_en-US" xlink:label="lab_us-gaap_NameOfMajorCustomerDomain_B9273F6AADC0C598301B6BCACC3D6782" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Name of Major Customer [Domain]</link:label>
    <link:label id="lab_us-gaap_NameOfMajorCustomerDomain_B9273F6AADC0C598301B6BCACC3D6782_label_en-US" xlink:label="lab_us-gaap_NameOfMajorCustomerDomain_B9273F6AADC0C598301B6BCACC3D6782" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customer [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NameOfMajorCustomerDomain" xlink:label="loc_us-gaap_NameOfMajorCustomerDomain_B9273F6AADC0C598301B6BCACC3D6782" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NameOfMajorCustomerDomain_B9273F6AADC0C598301B6BCACC3D6782" xlink:to="lab_us-gaap_NameOfMajorCustomerDomain_B9273F6AADC0C598301B6BCACC3D6782" xlink:type="arc" />
    <link:label id="lab_rmbs_CustomeraMember_73184457036C6D89FEC46BCACC3DE971_terseLabel_en-US" xlink:label="lab_rmbs_CustomeraMember_73184457036C6D89FEC46BCACC3DE971" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Customer A</link:label>
    <link:label id="lab_rmbs_CustomeraMember_73184457036C6D89FEC46BCACC3DE971_label_en-US" xlink:label="lab_rmbs_CustomeraMember_73184457036C6D89FEC46BCACC3DE971" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">CustomerA [Member]</link:label>
    <link:label id="lab_rmbs_CustomeraMember_73184457036C6D89FEC46BCACC3DE971_documentation_en-US" xlink:label="lab_rmbs_CustomeraMember_73184457036C6D89FEC46BCACC3DE971" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of total revenues from customer A revenues in excess of 10 percent of total revenues for respective reporting period.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_CustomeraMember" xlink:label="loc_rmbs_CustomeraMember_73184457036C6D89FEC46BCACC3DE971" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_CustomeraMember_73184457036C6D89FEC46BCACC3DE971" xlink:to="lab_rmbs_CustomeraMember_73184457036C6D89FEC46BCACC3DE971" xlink:type="arc" />
    <link:label id="lab_rmbs_CustomerBMember_05236BB2B69DFF5189CD6BCACC3E6280_terseLabel_en-US" xlink:label="lab_rmbs_CustomerBMember_05236BB2B69DFF5189CD6BCACC3E6280" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Customer B</link:label>
    <link:label id="lab_rmbs_CustomerBMember_05236BB2B69DFF5189CD6BCACC3E6280_label_en-US" xlink:label="lab_rmbs_CustomerBMember_05236BB2B69DFF5189CD6BCACC3E6280" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customer B [Member]</link:label>
    <link:label id="lab_rmbs_CustomerBMember_05236BB2B69DFF5189CD6BCACC3E6280_documentation_en-US" xlink:label="lab_rmbs_CustomerBMember_05236BB2B69DFF5189CD6BCACC3E6280" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of total revenues from customer B (revenues in excess of 10 percent of total revenues) for respective reporting period.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_CustomerBMember" xlink:label="loc_rmbs_CustomerBMember_05236BB2B69DFF5189CD6BCACC3E6280" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_CustomerBMember_05236BB2B69DFF5189CD6BCACC3E6280" xlink:to="lab_rmbs_CustomerBMember_05236BB2B69DFF5189CD6BCACC3E6280" xlink:type="arc" />
    <link:label id="lab_rmbs_CustomerCMember_9858C9D4FA0AFEAEB12B6BCACC3E8C26_terseLabel_en-US" xlink:label="lab_rmbs_CustomerCMember_9858C9D4FA0AFEAEB12B6BCACC3E8C26" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Customer C</link:label>
    <link:label id="lab_rmbs_CustomerCMember_9858C9D4FA0AFEAEB12B6BCACC3E8C26_label_en-US" xlink:label="lab_rmbs_CustomerCMember_9858C9D4FA0AFEAEB12B6BCACC3E8C26" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customer C [Member]</link:label>
    <link:label id="lab_rmbs_CustomerCMember_9858C9D4FA0AFEAEB12B6BCACC3E8C26_documentation_en-US" xlink:label="lab_rmbs_CustomerCMember_9858C9D4FA0AFEAEB12B6BCACC3E8C26" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of total revenues from customer C (revenues in excess of 10 percent of total revenues) for respective reporting period.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_CustomerCMember" xlink:label="loc_rmbs_CustomerCMember_9858C9D4FA0AFEAEB12B6BCACC3E8C26" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_CustomerCMember_9858C9D4FA0AFEAEB12B6BCACC3E8C26" xlink:to="lab_rmbs_CustomerCMember_9858C9D4FA0AFEAEB12B6BCACC3E8C26" xlink:type="arc" />
    <link:label id="lab_rmbs_CustomerDMember_3D2B3CD848D60E483B196BCACC3E58F5_terseLabel_en-US" xlink:label="lab_rmbs_CustomerDMember_3D2B3CD848D60E483B196BCACC3E58F5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Customer D</link:label>
    <link:label id="lab_rmbs_CustomerDMember_3D2B3CD848D60E483B196BCACC3E58F5_label_en-US" xlink:label="lab_rmbs_CustomerDMember_3D2B3CD848D60E483B196BCACC3E58F5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customer D [Member]</link:label>
    <link:label id="lab_rmbs_CustomerDMember_3D2B3CD848D60E483B196BCACC3E58F5_documentation_en-US" xlink:label="lab_rmbs_CustomerDMember_3D2B3CD848D60E483B196BCACC3E58F5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Customer D [Member]</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_CustomerDMember" xlink:label="loc_rmbs_CustomerDMember_3D2B3CD848D60E483B196BCACC3E58F5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_CustomerDMember_3D2B3CD848D60E483B196BCACC3E58F5" xlink:to="lab_rmbs_CustomerDMember_3D2B3CD848D60E483B196BCACC3E58F5" xlink:type="arc" />
    <link:label id="lab_rmbs_CustomerEMember_40A76C3656698B3B1B816BD496C8932A_terseLabel_en-US" xlink:label="lab_rmbs_CustomerEMember_40A76C3656698B3B1B816BD496C8932A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Customer E</link:label>
    <link:label id="lab_rmbs_CustomerEMember_40A76C3656698B3B1B816BD496C8932A_label_en-US" xlink:label="lab_rmbs_CustomerEMember_40A76C3656698B3B1B816BD496C8932A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customer E [Member]</link:label>
    <link:label id="lab_rmbs_CustomerEMember_40A76C3656698B3B1B816BD496C8932A_documentation_en-US" xlink:label="lab_rmbs_CustomerEMember_40A76C3656698B3B1B816BD496C8932A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Customer E [Member]</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_CustomerEMember" xlink:label="loc_rmbs_CustomerEMember_40A76C3656698B3B1B816BD496C8932A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_CustomerEMember_40A76C3656698B3B1B816BD496C8932A" xlink:to="lab_rmbs_CustomerEMember_40A76C3656698B3B1B816BD496C8932A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConcentrationRiskLineItems_66B714CA691E312B73C16BCACC3E36CA_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskLineItems_66B714CA691E312B73C16BCACC3E36CA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Concentration Risk</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskLineItems_66B714CA691E312B73C16BCACC3E36CA_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskLineItems_66B714CA691E312B73C16BCACC3E36CA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConcentrationRiskLineItems" xlink:label="loc_us-gaap_ConcentrationRiskLineItems_66B714CA691E312B73C16BCACC3E36CA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_66B714CA691E312B73C16BCACC3E36CA" xlink:to="lab_us-gaap_ConcentrationRiskLineItems_66B714CA691E312B73C16BCACC3E36CA" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConcentrationRiskPercentage1_3A2A21F056D1B7CF5CFB6BCACC3E76EF_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskPercentage1_3A2A21F056D1B7CF5CFB6BCACC3E76EF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenue from major customer as a percentage of total revenue</link:label>
    <link:label id="lab_us-gaap_ConcentrationRiskPercentage1_3A2A21F056D1B7CF5CFB6BCACC3E76EF_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskPercentage1_3A2A21F056D1B7CF5CFB6BCACC3E76EF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk, Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_3A2A21F056D1B7CF5CFB6BCACC3E76EF" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_48115FD5E8271C80A1AE90FCFCBA6BD2_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_48115FD5E8271C80A1AE90FCFCBA6BD2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of Shares</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_48115FD5E8271C80A1AE90FCFCBA6BD2_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_48115FD5E8271C80A1AE90FCFCBA6BD2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_48115FD5E8271C80A1AE90FCFCBA6BD2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_48115FD5E8271C80A1AE90FCFCBA6BD2" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_48115FD5E8271C80A1AE90FCFCBA6BD2" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_A076B64C9704F9BA29EB90FCFCBAB91B_periodStartLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_A076B64C9704F9BA29EB90FCFCBAB91B" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Outstanding, at the beginning of the period (in shares)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_A076B64C9704F9BA29EB90FCFCBAB91B_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_A076B64C9704F9BA29EB90FCFCBAB91B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_A076B64C9704F9BA29EB90FCFCBAB91B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_A076B64C9704F9BA29EB90FCFCBAB91B" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_A076B64C9704F9BA29EB90FCFCBAB91B" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_61F879B23D473A5E928490FCFCBA32E6_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_61F879B23D473A5E928490FCFCBA32E6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Options granted (in shares)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_61F879B23D473A5E928490FCFCBA32E6_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_61F879B23D473A5E928490FCFCBA32E6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_61F879B23D473A5E928490FCFCBA32E6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_61F879B23D473A5E928490FCFCBA32E6" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_61F879B23D473A5E928490FCFCBA32E6" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_CD14498D366A81FEFD8490FCFCBAB780_negatedLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_CD14498D366A81FEFD8490FCFCBAB780" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Options exercised (in shares)</link:label>
    <link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_CD14498D366A81FEFD8490FCFCBAB780_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_CD14498D366A81FEFD8490FCFCBAB780" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_CD14498D366A81FEFD8490FCFCBAB780" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_CD14498D366A81FEFD8490FCFCBAB780" xlink:to="lab_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_CD14498D366A81FEFD8490FCFCBAB780" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_8A9467737365AA02C9E290FCFCBA39AE_negatedLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_8A9467737365AA02C9E290FCFCBA39AE" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Options forfeited (in shares)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_8A9467737365AA02C9E290FCFCBA39AE_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_8A9467737365AA02C9E290FCFCBA39AE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_8A9467737365AA02C9E290FCFCBA39AE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_8A9467737365AA02C9E290FCFCBA39AE" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_8A9467737365AA02C9E290FCFCBA39AE" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_C06412C317F065C177DA90FCFCBA5BDE_periodEndLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_C06412C317F065C177DA90FCFCBA5BDE" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Outstanding, at the end of the period (in shares)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_C06412C317F065C177DA90FCFCBA5BDE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_C06412C317F065C177DA90FCFCBA5BDE" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_C06412C317F065C177DA90FCFCBA5BDE" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber_C28E6C8A62D8C58F372990FCFCBA4E9F_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber_C28E6C8A62D8C58F372990FCFCBA4E9F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Vested or expected to vest at the end of the period (in shares)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber_C28E6C8A62D8C58F372990FCFCBA4E9F_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber_C28E6C8A62D8C58F372990FCFCBA4E9F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber_C28E6C8A62D8C58F372990FCFCBA4E9F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber_C28E6C8A62D8C58F372990FCFCBA4E9F" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber_C28E6C8A62D8C58F372990FCFCBA4E9F" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_0AC43FC71F7147CDE8BF90FCFCBA9CAE_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_0AC43FC71F7147CDE8BF90FCFCBA9CAE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Options exercisable at the end of the period (in shares)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_0AC43FC71F7147CDE8BF90FCFCBA9CAE_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_0AC43FC71F7147CDE8BF90FCFCBA9CAE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_0AC43FC71F7147CDE8BF90FCFCBA9CAE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_0AC43FC71F7147CDE8BF90FCFCBA9CAE" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_0AC43FC71F7147CDE8BF90FCFCBA9CAE" xlink:type="arc" />
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageExercisePriceRollForward_F7F93AB5D6264DBB49E490FCFCBA98D0_terseLabel_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageExercisePriceRollForward_F7F93AB5D6264DBB49E490FCFCBA98D0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted Average Exercise Price</link:label>
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageExercisePriceRollForward_F7F93AB5D6264DBB49E490FCFCBA98D0_label_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageExercisePriceRollForward_F7F93AB5D6264DBB49E490FCFCBA98D0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share Based Compensation Arrangement by Share Based Payment Award Options, Weighted Average Exercise Price [Roll Forward]</link:label>
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageExercisePriceRollForward_F7F93AB5D6264DBB49E490FCFCBA98D0_documentation_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageExercisePriceRollForward_F7F93AB5D6264DBB49E490FCFCBA98D0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">-- None. No documentation exists for this element. --</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageExercisePriceRollForward" xlink:label="loc_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageExercisePriceRollForward_F7F93AB5D6264DBB49E490FCFCBA98D0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageExercisePriceRollForward_F7F93AB5D6264DBB49E490FCFCBA98D0" xlink:to="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageExercisePriceRollForward_F7F93AB5D6264DBB49E490FCFCBA98D0" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_2279273D9EE12046A71B90FCFCBA1EB0_periodStartLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_2279273D9EE12046A71B90FCFCBA1EB0" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Outstanding at the beginning of the year (in dollars per shares)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_2279273D9EE12046A71B90FCFCBA1EB0_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_2279273D9EE12046A71B90FCFCBA1EB0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_2279273D9EE12046A71B90FCFCBA1EB0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_2279273D9EE12046A71B90FCFCBA1EB0" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_2279273D9EE12046A71B90FCFCBA1EB0" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_C15B4D41C58FC89A33DE90FCFCBAA12A_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_C15B4D41C58FC89A33DE90FCFCBAA12A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Options granted (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_C15B4D41C58FC89A33DE90FCFCBAA12A_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_C15B4D41C58FC89A33DE90FCFCBAA12A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_C15B4D41C58FC89A33DE90FCFCBAA12A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_C15B4D41C58FC89A33DE90FCFCBAA12A" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_C15B4D41C58FC89A33DE90FCFCBAA12A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_B752DBB9D97856277D1890FCFCBB9F61_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_B752DBB9D97856277D1890FCFCBB9F61" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Options exercised (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_B752DBB9D97856277D1890FCFCBB9F61_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_B752DBB9D97856277D1890FCFCBB9F61" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_B752DBB9D97856277D1890FCFCBB9F61" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_B752DBB9D97856277D1890FCFCBB9F61" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_B752DBB9D97856277D1890FCFCBB9F61" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_3736BB20511EBC43A03E90FCFCBB03F2_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_3736BB20511EBC43A03E90FCFCBB03F2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Options forfeited (in dollars per share)</link:label>
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    <link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_77DF9028939FF004DDD690FCFCBBE376_terseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_77DF9028939FF004DDD690FCFCBBE376" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Options exercisable</link:label>
    <link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_77DF9028939FF004DDD690FCFCBBE376_label_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_77DF9028939FF004DDD690FCFCBBE376" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_77DF9028939FF004DDD690FCFCBBE376" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_77DF9028939FF004DDD690FCFCBBE376" xlink:to="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_77DF9028939FF004DDD690FCFCBBE376" xlink:type="arc" />
    <link:label id="lab_rmbs_EntityClosingStockPrice_ED15FE333FB824EA2F4990FCFCBB0C04_terseLabel_en-US" xlink:label="lab_rmbs_EntityClosingStockPrice_ED15FE333FB824EA2F4990FCFCBB0C04" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Closing stock price (in dollars per share)</link:label>
    <link:label id="lab_rmbs_EntityClosingStockPrice_ED15FE333FB824EA2F4990FCFCBB0C04_label_en-US" xlink:label="lab_rmbs_EntityClosingStockPrice_ED15FE333FB824EA2F4990FCFCBB0C04" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Closing Stock Price</link:label>
    <link:label id="lab_rmbs_EntityClosingStockPrice_ED15FE333FB824EA2F4990FCFCBB0C04_documentation_en-US" xlink:label="lab_rmbs_EntityClosingStockPrice_ED15FE333FB824EA2F4990FCFCBB0C04" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The closing price for entity's stock on the NASDAQ market at end of period.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_EntityClosingStockPrice" xlink:label="loc_rmbs_EntityClosingStockPrice_ED15FE333FB824EA2F4990FCFCBB0C04" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_EntityClosingStockPrice_ED15FE333FB824EA2F4990FCFCBB0C04" xlink:to="lab_rmbs_EntityClosingStockPrice_ED15FE333FB824EA2F4990FCFCBB0C04" xlink:type="arc" />
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInMoneyOutstandingNumber_839DDBE416EA0D35422F90FCFCBC0FEF_terseLabel_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInMoneyOutstandingNumber_839DDBE416EA0D35422F90FCFCBC0FEF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total number of in-the-money outstanding (in shares)</link:label>
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInMoneyOutstandingNumber_839DDBE416EA0D35422F90FCFCBC0FEF_label_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInMoneyOutstandingNumber_839DDBE416EA0D35422F90FCFCBC0FEF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share Based Compensation Arrangement by Share Based Payment Award Options, In The Money Outstanding, Number</link:label>
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInMoneyOutstandingNumber_839DDBE416EA0D35422F90FCFCBC0FEF_documentation_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInMoneyOutstandingNumber_839DDBE416EA0D35422F90FCFCBC0FEF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the number of in-the-money stock options outstanding.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInMoneyOutstandingNumber" xlink:label="loc_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInMoneyOutstandingNumber_839DDBE416EA0D35422F90FCFCBC0FEF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInMoneyOutstandingNumber_839DDBE416EA0D35422F90FCFCBC0FEF" xlink:to="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInMoneyOutstandingNumber_839DDBE416EA0D35422F90FCFCBC0FEF" xlink:type="arc" />
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInMoneyExercisableNumber_97565B093EB7C5051BCA90FCFCBC04AF_terseLabel_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInMoneyExercisableNumber_97565B093EB7C5051BCA90FCFCBC04AF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total number of in-the-money exercisable (in shares)</link:label>
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInMoneyExercisableNumber_97565B093EB7C5051BCA90FCFCBC04AF_label_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInMoneyExercisableNumber_97565B093EB7C5051BCA90FCFCBC04AF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share Based Compensation Arrangement By Share Based Payment Award, Options in the Money Exercisable, Number</link:label>
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInMoneyExercisableNumber_97565B093EB7C5051BCA90FCFCBC04AF_documentation_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInMoneyExercisableNumber_97565B093EB7C5051BCA90FCFCBC04AF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the number of in-the-money stock options exercisable.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInMoneyExercisableNumber" xlink:label="loc_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInMoneyExercisableNumber_97565B093EB7C5051BCA90FCFCBC04AF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInMoneyExercisableNumber_97565B093EB7C5051BCA90FCFCBC04AF" xlink:to="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInMoneyExercisableNumber_97565B093EB7C5051BCA90FCFCBC04AF" xlink:type="arc" />
    <link:label id="lab_us-gaap_EmployeeStockMember_95B5F653B2DB9C8DDA6B8B7F856D321F_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeStockMember_95B5F653B2DB9C8DDA6B8B7F856D321F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Employee Stock Purchase Plan</link:label>
    <link:label id="lab_us-gaap_EmployeeStockMember_95B5F653B2DB9C8DDA6B8B7F856D321F_label_en-US" xlink:label="lab_us-gaap_EmployeeStockMember_95B5F653B2DB9C8DDA6B8B7F856D321F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee Stock [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EmployeeStockMember" xlink:label="loc_us-gaap_EmployeeStockMember_95B5F653B2DB9C8DDA6B8B7F856D321F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EmployeeStockMember_95B5F653B2DB9C8DDA6B8B7F856D321F" xlink:to="lab_us-gaap_EmployeeStockMember_95B5F653B2DB9C8DDA6B8B7F856D321F" xlink:type="arc" />
    <link:label id="lab_rmbs_RestrictedStockAndStockUnitsMember_C97FA51A2165285965C08B7F856D2D5C_terseLabel_en-US" xlink:label="lab_rmbs_RestrictedStockAndStockUnitsMember_C97FA51A2165285965C08B7F856D2D5C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted Stock and Stock Units</link:label>
    <link:label id="lab_rmbs_RestrictedStockAndStockUnitsMember_C97FA51A2165285965C08B7F856D2D5C_label_en-US" xlink:label="lab_rmbs_RestrictedStockAndStockUnitsMember_C97FA51A2165285965C08B7F856D2D5C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted Stock and Stock Units [Member]</link:label>
    <link:label id="lab_rmbs_RestrictedStockAndStockUnitsMember_C97FA51A2165285965C08B7F856D2D5C_documentation_en-US" xlink:label="lab_rmbs_RestrictedStockAndStockUnitsMember_C97FA51A2165285965C08B7F856D2D5C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Restricted stock and stock units as awarded by a company to their employees as a form of incentive compensation.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_RestrictedStockAndStockUnitsMember" xlink:label="loc_rmbs_RestrictedStockAndStockUnitsMember_C97FA51A2165285965C08B7F856D2D5C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_RestrictedStockAndStockUnitsMember_C97FA51A2165285965C08B7F856D2D5C" xlink:to="lab_rmbs_RestrictedStockAndStockUnitsMember_C97FA51A2165285965C08B7F856D2D5C" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_EC1BBF7E2EBB46BBE6B68B7F856EA586_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_EC1BBF7E2EBB46BBE6B68B7F856EA586" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Shares available for issuance</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_EC1BBF7E2EBB46BBE6B68B7F856EA586_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_EC1BBF7E2EBB46BBE6B68B7F856EA586" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_EC1BBF7E2EBB46BBE6B68B7F856EA586" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_EC1BBF7E2EBB46BBE6B68B7F856EA586" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_EC1BBF7E2EBB46BBE6B68B7F856EA586" xlink:type="arc" />
    <link:label id="lab_rmbs_EmployeeStockPurchasePlanNumberOfAdditionalSharesToBeAuthorized_D34F6CA1FF63B908CD888B7F856EDED0_terseLabel_en-US" xlink:label="lab_rmbs_EmployeeStockPurchasePlanNumberOfAdditionalSharesToBeAuthorized_D34F6CA1FF63B908CD888B7F856EDED0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of additional shares registered under the ESPP</link:label>
    <link:label id="lab_rmbs_EmployeeStockPurchasePlanNumberOfAdditionalSharesToBeAuthorized_D34F6CA1FF63B908CD888B7F856EDED0_label_en-US" xlink:label="lab_rmbs_EmployeeStockPurchasePlanNumberOfAdditionalSharesToBeAuthorized_D34F6CA1FF63B908CD888B7F856EDED0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee Stock Purchase Plan, Number Of Additional SharesToBe Authorized</link:label>
    <link:label id="lab_rmbs_EmployeeStockPurchasePlanNumberOfAdditionalSharesToBeAuthorized_D34F6CA1FF63B908CD888B7F856EDED0_documentation_en-US" xlink:label="lab_rmbs_EmployeeStockPurchasePlanNumberOfAdditionalSharesToBeAuthorized_D34F6CA1FF63B908CD888B7F856EDED0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Employee Stock Purchase Plan, Number Of Additional Shares To Be Authorized</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_EmployeeStockPurchasePlanNumberOfAdditionalSharesToBeAuthorized" xlink:label="loc_rmbs_EmployeeStockPurchasePlanNumberOfAdditionalSharesToBeAuthorized_D34F6CA1FF63B908CD888B7F856EDED0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_EmployeeStockPurchasePlanNumberOfAdditionalSharesToBeAuthorized_D34F6CA1FF63B908CD888B7F856EDED0" xlink:to="lab_rmbs_EmployeeStockPurchasePlanNumberOfAdditionalSharesToBeAuthorized_D34F6CA1FF63B908CD888B7F856EDED0" xlink:type="arc" />
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPriceSpecificDate_0468861FC3BF92650F218B7F856E6387_verboseLabel_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPriceSpecificDate_0468861FC3BF92650F218B7F856E6387" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Shares issued at discount from the fair market value (as a percent)</link:label>
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPriceSpecificDate_0468861FC3BF92650F218B7F856E6387_label_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPriceSpecificDate_0468861FC3BF92650F218B7F856E6387" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share Based Compensation Arrangement by Share Based Payment Award Discount from Market Price Specific Date</link:label>
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPriceSpecificDate_0468861FC3BF92650F218B7F856E6387_documentation_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPriceSpecificDate_0468861FC3BF92650F218B7F856E6387" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The discount rate from market value on specific date that participants pay for shares.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPriceSpecificDate" xlink:label="loc_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPriceSpecificDate_0468861FC3BF92650F218B7F856E6387" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPriceSpecificDate_0468861FC3BF92650F218B7F856E6387" xlink:to="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPriceSpecificDate_0468861FC3BF92650F218B7F856E6387" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_1735CD930BE5173B23338B7F856EE241_verboseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_1735CD930BE5173B23338B7F856EE241" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Stock options granted (in shares)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_1735CD930BE5173B23338B7F856EE241" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_1735CD930BE5173B23338B7F856EE241" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_1735CD930BE5173B23338B7F856EE241" xlink:type="arc" />
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodTotalFairValue_F83F6DA2D0AF1EC74F8B8B7F856FC4A4_terseLabel_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodTotalFairValue_F83F6DA2D0AF1EC74F8B8B7F856FC4A4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated total grant date fair value</link:label>
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodTotalFairValue_F83F6DA2D0AF1EC74F8B8B7F856FC4A4_label_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodTotalFairValue_F83F6DA2D0AF1EC74F8B8B7F856FC4A4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share Based Compensation Arrangement by Share Based Payment Award Options, Grants in Period, Total Fair Value</link:label>
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodTotalFairValue_F83F6DA2D0AF1EC74F8B8B7F856FC4A4_documentation_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodTotalFairValue_F83F6DA2D0AF1EC74F8B8B7F856FC4A4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the total fair value of options for granted during the period.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodTotalFairValue" xlink:label="loc_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodTotalFairValue_F83F6DA2D0AF1EC74F8B8B7F856FC4A4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodTotalFairValue_F83F6DA2D0AF1EC74F8B8B7F856FC4A4" xlink:to="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodTotalFairValue_F83F6DA2D0AF1EC74F8B8B7F856FC4A4" xlink:type="arc" />
    <link:label id="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_8FF6F4BAA79582205DE88B7F856FB2B2_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_8FF6F4BAA79582205DE88B7F856FB2B2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrecognized compensation cost net of expected forfeitures</link:label>
    <link:label id="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_8FF6F4BAA79582205DE88B7F856FB2B2_label_en-US" xlink:label="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_8FF6F4BAA79582205DE88B7F856FB2B2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_8FF6F4BAA79582205DE88B7F856FB2B2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_8FF6F4BAA79582205DE88B7F856FB2B2" xlink:to="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_8FF6F4BAA79582205DE88B7F856FB2B2" xlink:type="arc" />
    <link:label id="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_DBA765398FE357AFE4B28B7F856F562B_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_DBA765398FE357AFE4B28B7F856F562B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected weighted-average period for recognition of compensation cost</link:label>
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    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOptionsVestedTotalFairValue_8DF489A1619BB7075E528B7F856FA0BC_terseLabel_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOptionsVestedTotalFairValue_8DF489A1619BB7075E528B7F856FA0BC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total fair value of options vested</link:label>
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    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_A25FFDA2A6AE46DB287C8B7F856FAC79_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_A25FFDA2A6AE46DB287C8B7F856FAC79" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total intrinsic value of options exercised</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_A25FFDA2A6AE46DB287C8B7F856FAC79" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_A25FFDA2A6AE46DB287C8B7F856FAC79" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_A25FFDA2A6AE46DB287C8B7F856FAC79" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromStockOptionsExercised_AD7FFB9F5CFEBD286C778B7F856F01F8_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromStockOptionsExercised_AD7FFB9F5CFEBD286C778B7F856F01F8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from Stock Options Exercised</link:label>
    <link:label id="lab_us-gaap_ProceedsFromStockOptionsExercised_AD7FFB9F5CFEBD286C778B7F856F01F8_label_en-US" xlink:label="lab_us-gaap_ProceedsFromStockOptionsExercised_AD7FFB9F5CFEBD286C778B7F856F01F8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Stock Options Exercised</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromStockOptionsExercised_AD7FFB9F5CFEBD286C778B7F856F01F8" xlink:to="lab_us-gaap_ProceedsFromStockOptionsExercised_AD7FFB9F5CFEBD286C778B7F856F01F8" xlink:type="arc" />
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_EDA8A478B017B76DF8EA8B7F856FF4FA" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_EDA8A478B017B76DF8EA8B7F856FF4FA" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_A5038BF2968C9BA255C08B7F85700EEA_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_A5038BF2968C9BA255C08B7F85700EEA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Dividend yield (as a percent)</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_A5038BF2968C9BA255C08B7F85700EEA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_A5038BF2968C9BA255C08B7F85700EEA" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_A5038BF2968C9BA255C08B7F85700EEA" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_38FEF8370FCD9F56DAFD8B7F8570D0C0_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_38FEF8370FCD9F56DAFD8B7F8570D0C0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected stock price volatility (as a percent)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_38FEF8370FCD9F56DAFD8B7F8570D0C0_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_38FEF8370FCD9F56DAFD8B7F8570D0C0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_38FEF8370FCD9F56DAFD8B7F8570D0C0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_38FEF8370FCD9F56DAFD8B7F8570D0C0" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_38FEF8370FCD9F56DAFD8B7F8570D0C0" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_FFDBBEF4195E7EF92D278B7F857399C3_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_FFDBBEF4195E7EF92D278B7F857399C3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Risk free interest rate</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_FFDBBEF4195E7EF92D278B7F857399C3" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_FFDBBEF4195E7EF92D278B7F857399C3" xlink:type="arc" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_0095DFCAF3029C514E028B7F8573E376" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_0095DFCAF3029C514E028B7F8573E376" xlink:to="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_0095DFCAF3029C514E028B7F8573E376" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_F2713628D9733E300B4A8B7F8574D3B5_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_F2713628D9733E300B4A8B7F8574D3B5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted-average fair value of stock options granted (in dollars per share)</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_F2713628D9733E300B4A8B7F8574D3B5" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_F2713628D9733E300B4A8B7F8574D3B5" xlink:type="arc" />
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRequisiteServicePeriod_A0850C833F7FB5AE82DF8B7F85747FDC_terseLabel_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRequisiteServicePeriod_A0850C833F7FB5AE82DF8B7F85747FDC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">General nonvested equity stock service period (in years)</link:label>
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    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRequisiteServicePeriod_A0850C833F7FB5AE82DF8B7F85747FDC_documentation_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRequisiteServicePeriod_A0850C833F7FB5AE82DF8B7F85747FDC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the estimated period of time over which an employee is required to provide service in exchange for the equity-based payment award.</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRequisiteServicePeriod_A0850C833F7FB5AE82DF8B7F85747FDC" xlink:to="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRequisiteServicePeriod_A0850C833F7FB5AE82DF8B7F85747FDC" xlink:type="arc" />
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRequisiteServicePeriodForDirectors_C0F4BBDAB826614B52598B7F857478C5_terseLabel_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRequisiteServicePeriodForDirectors_C0F4BBDAB826614B52598B7F857478C5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Nonvested equity stock unit to directors, service period</link:label>
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    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedGrantsInPeriodTotalFairValue_ED0C562BB13B3E0D25DF8B7F857495D9_documentation_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedGrantsInPeriodTotalFairValue_ED0C562BB13B3E0D25DF8B7F857495D9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the total fair value of nonvested equity stock units granted during the period.</link:label>
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    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_547BFC91BFCECA6E0EA68B7F8575A67A_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_547BFC91BFCECA6E0EA68B7F8575A67A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Granted (in shares)</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_547BFC91BFCECA6E0EA68B7F8575A67A" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_547BFC91BFCECA6E0EA68B7F8575A67A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_90C4174B130331F02B7A8B7F8575B9D2_negatedLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_90C4174B130331F02B7A8B7F8575B9D2" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Vested (in shares)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_90C4174B130331F02B7A8B7F8575B9D2_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_90C4174B130331F02B7A8B7F8575B9D2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_90C4174B130331F02B7A8B7F8575B9D2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_90C4174B130331F02B7A8B7F8575B9D2" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_90C4174B130331F02B7A8B7F8575B9D2" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_0FD25095E8BE0E45ED898B7F85756ED1_negatedLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_0FD25095E8BE0E45ED898B7F85756ED1" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Forfeited (in shares)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_0FD25095E8BE0E45ED898B7F85756ED1_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_0FD25095E8BE0E45ED898B7F85756ED1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_0FD25095E8BE0E45ED898B7F85756ED1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_0FD25095E8BE0E45ED898B7F85756ED1" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_0FD25095E8BE0E45ED898B7F85756ED1" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_980B98C15631BB41D6EC8B7F85755131_periodEndLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_980B98C15631BB41D6EC8B7F85755131" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Nonvested at the end of the period (in shares)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_980B98C15631BB41D6EC8B7F85755131" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_980B98C15631BB41D6EC8B7F85755131" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_980B98C15631BB41D6EC8B7F85755131" xlink:type="arc" />
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    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_C2692A332B2628BDF76B8B7F857523AC_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_C2692A332B2628BDF76B8B7F857523AC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_C2692A332B2628BDF76B8B7F857523AC" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_C2692A332B2628BDF76B8B7F857523AC" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_42193719BF7C0AEF09468B7F8575F9B5_periodStartLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_42193719BF7C0AEF09468B7F8575F9B5" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Nonvested at the beginning of the period (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_42193719BF7C0AEF09468B7F8575F9B5_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_42193719BF7C0AEF09468B7F8575F9B5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value</link:label>
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    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_0EA29D8C16793DFEBE408B7F85753D27_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_0EA29D8C16793DFEBE408B7F85753D27" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Granted (in dollars per share)</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_C334ED9FB2130565273FDCADEA28009A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_C334ED9FB2130565273FDCADEA28009A" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_C334ED9FB2130565273FDCADEA28009A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_6AF7458099421295FA48DCADEA2867B7_negatedLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_6AF7458099421295FA48DCADEA2867B7" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Stock options expired under former plans (in shares)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_6AF7458099421295FA48DCADEA2867B7_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_6AF7458099421295FA48DCADEA2867B7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_6AF7458099421295FA48DCADEA2867B7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_6AF7458099421295FA48DCADEA2867B7" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_6AF7458099421295FA48DCADEA2867B7" xlink:type="arc" />
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodDecreaseInAvailableForGrant_1DE074592239D71EC470DCADEA28EDC3_negatedLabel_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodDecreaseInAvailableForGrant_1DE074592239D71EC470DCADEA28EDC3" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Nonvested equity stock and stock units granted (in shares)</link:label>
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodDecreaseInAvailableForGrant_1DE074592239D71EC470DCADEA28EDC3_label_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodDecreaseInAvailableForGrant_1DE074592239D71EC470DCADEA28EDC3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options, Grants in Period Decrease in Available for Grant</link:label>
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodDecreaseInAvailableForGrant_1DE074592239D71EC470DCADEA28EDC3_documentation_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodDecreaseInAvailableForGrant_1DE074592239D71EC470DCADEA28EDC3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the decrease in number of shares available for grant under the stock incentive plans, which is based on a factor of 1.5 for every restricted stock award granted for the period.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodDecreaseInAvailableForGrant" xlink:label="loc_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodDecreaseInAvailableForGrant_1DE074592239D71EC470DCADEA28EDC3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodDecreaseInAvailableForGrant_1DE074592239D71EC470DCADEA28EDC3" xlink:to="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodDecreaseInAvailableForGrant_1DE074592239D71EC470DCADEA28EDC3" xlink:type="arc" />
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodIncreaseInAvailableForGrant_434EA1E77F8729863AB9DCADEA2863C3_terseLabel_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodIncreaseInAvailableForGrant_434EA1E77F8729863AB9DCADEA2863C3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Nonvested equity stock and stock units forfeited (in shares)</link:label>
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodIncreaseInAvailableForGrant_434EA1E77F8729863AB9DCADEA2863C3_label_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodIncreaseInAvailableForGrant_434EA1E77F8729863AB9DCADEA2863C3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments, Other than Options Forfeited in Period Increase in Available for Grant</link:label>
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodIncreaseInAvailableForGrant_434EA1E77F8729863AB9DCADEA2863C3_documentation_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodIncreaseInAvailableForGrant_434EA1E77F8729863AB9DCADEA2863C3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the increase in number of shares available for grant under the stock incentive plans, which is based on a factor of 1.5 for every restricted stock award forfeited for the period.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodIncreaseInAvailableForGrant" xlink:label="loc_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodIncreaseInAvailableForGrant_434EA1E77F8729863AB9DCADEA2863C3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodIncreaseInAvailableForGrant_434EA1E77F8729863AB9DCADEA2863C3" xlink:to="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodIncreaseInAvailableForGrant_434EA1E77F8729863AB9DCADEA2863C3" xlink:type="arc" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_12E40F151F2E86969ED8DCADEA282C3E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_12E40F151F2E86969ED8DCADEA282C3E" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_12E40F151F2E86969ED8DCADEA282C3E" xlink:type="arc" />
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodDecreaseInAvailableForGrantForEveryGrant_BC801D6A794C5C9FDCC4DCADEA289490_terseLabel_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodDecreaseInAvailableForGrantForEveryGrant_BC801D6A794C5C9FDCC4DCADEA289490" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Conversion factor used to calculate the decrease in the number of shares available for grant resulting from the grant of restricted stock awards</link:label>
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodDecreaseInAvailableForGrantForEveryGrant_BC801D6A794C5C9FDCC4DCADEA289490_label_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodDecreaseInAvailableForGrantForEveryGrant_BC801D6A794C5C9FDCC4DCADEA289490" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments, Other than Options Grants in Period Decrease in Available for Grant for Every Grant</link:label>
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodDecreaseInAvailableForGrantForEveryGrant_BC801D6A794C5C9FDCC4DCADEA289490_documentation_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodDecreaseInAvailableForGrantForEveryGrant_BC801D6A794C5C9FDCC4DCADEA289490" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">For purposes of determining the number of shares available for grant under the 2006 Equity Incentive Plan, represents the multiplier by which the number of shares available for grant will decrease, for every restricted stock award granted.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodDecreaseInAvailableForGrantForEveryGrant" xlink:label="loc_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodDecreaseInAvailableForGrantForEveryGrant_BC801D6A794C5C9FDCC4DCADEA289490" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodDecreaseInAvailableForGrantForEveryGrant_BC801D6A794C5C9FDCC4DCADEA289490" xlink:to="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodDecreaseInAvailableForGrantForEveryGrant_BC801D6A794C5C9FDCC4DCADEA289490" xlink:type="arc" />
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodIncreaseInAvailableForGrantForEveryForfeiture_6EB32EC321BA77A8E3E9DCADEA281717_terseLabel_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodIncreaseInAvailableForGrantForEveryForfeiture_6EB32EC321BA77A8E3E9DCADEA281717" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Conversion factor used to calculate the increase in the number of shares available for grant resulting from the forfeiture of restricted stock awards</link:label>
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodIncreaseInAvailableForGrantForEveryForfeiture_6EB32EC321BA77A8E3E9DCADEA281717_label_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodIncreaseInAvailableForGrantForEveryForfeiture_6EB32EC321BA77A8E3E9DCADEA281717" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments, Other than Options, Forfeited in Period Increase in Available for Grant for Every Forfeiture</link:label>
    <link:label id="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodIncreaseInAvailableForGrantForEveryForfeiture_6EB32EC321BA77A8E3E9DCADEA281717_documentation_en-US" xlink:label="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodIncreaseInAvailableForGrantForEveryForfeiture_6EB32EC321BA77A8E3E9DCADEA281717" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">For purposes of determining the number of shares available for grant under the 2006 Equity Incentive Plan, represents the multiplier by which the number of shares available for grant will increase, for every restricted stock award forfeited.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodIncreaseInAvailableForGrantForEveryForfeiture" xlink:label="loc_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodIncreaseInAvailableForGrantForEveryForfeiture_6EB32EC321BA77A8E3E9DCADEA281717" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodIncreaseInAvailableForGrantForEveryForfeiture_6EB32EC321BA77A8E3E9DCADEA281717" xlink:to="lab_rmbs_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodIncreaseInAvailableForGrantForEveryForfeiture_6EB32EC321BA77A8E3E9DCADEA281717" xlink:type="arc" />
    <link:label id="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_94F3FC3661A9614CAB38DCADE96D8BE6_terseLabel_en-US" xlink:label="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_94F3FC3661A9614CAB38DCADE96D8BE6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity Incentive Plans and Stock-Based Compensation</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_94F3FC3661A9614CAB38DCADE96D8BE6" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncomeTaxDisclosureTextBlock_E2E7EDBA6821E8F9B922E1869F505A1C_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureTextBlock_E2E7EDBA6821E8F9B922E1869F505A1C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income Taxes</link:label>
    <link:label id="lab_us-gaap_IncomeTaxDisclosureTextBlock_E2E7EDBA6821E8F9B922E1869F505A1C_label_en-US" xlink:label="lab_us-gaap_IncomeTaxDisclosureTextBlock_E2E7EDBA6821E8F9B922E1869F505A1C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeTaxDisclosureTextBlock" xlink:label="loc_us-gaap_IncomeTaxDisclosureTextBlock_E2E7EDBA6821E8F9B922E1869F505A1C" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_FD0F02E498761143F4BBDCADEA09CDB4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_FD0F02E498761143F4BBDCADEA09CDB4" xlink:to="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_FD0F02E498761143F4BBDCADEA09CDB4" xlink:type="arc" />
    <link:label id="lab_rmbs_DocumentAndEntityInformation_BBB6B02D2634D7D9048ADCADEA862860_label_en-US" xlink:label="lab_rmbs_DocumentAndEntityInformation_BBB6B02D2634D7D9048ADCADEA862860" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document and Entity Information</link:label>
    <link:label id="lab_rmbs_DocumentAndEntityInformation_BBB6B02D2634D7D9048ADCADEA862860_documentation_en-US" xlink:label="lab_rmbs_DocumentAndEntityInformation_BBB6B02D2634D7D9048ADCADEA862860" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">No documentation exists for this element</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_DocumentAndEntityInformation_BBB6B02D2634D7D9048ADCADEA862860" xlink:to="lab_rmbs_DocumentAndEntityInformation_BBB6B02D2634D7D9048ADCADEA862860" xlink:type="arc" />
    <link:label id="lab_dei_EntityRegistrantName_BCFB62D80ED82CDD263FDCADEA869D96_terseLabel_en-US" xlink:label="lab_dei_EntityRegistrantName_BCFB62D80ED82CDD263FDCADEA869D96" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Registrant Name</link:label>
    <link:label id="lab_dei_EntityRegistrantName_BCFB62D80ED82CDD263FDCADEA869D96_label_en-US" xlink:label="lab_dei_EntityRegistrantName_BCFB62D80ED82CDD263FDCADEA869D96" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Registrant Name</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_EntityRegistrantName" xlink:label="loc_dei_EntityRegistrantName_BCFB62D80ED82CDD263FDCADEA869D96" xlink:type="locator" />
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    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_0681639200E295DF1CF5867D53E7E14B_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_0681639200E295DF1CF5867D53E7E14B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2014 (remaining 9 months)</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_0681639200E295DF1CF5867D53E7E14B" xlink:type="locator" />
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    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_C48AECDB3C205A10B342867D53E8E288_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_C48AECDB3C205A10B342867D53E8E288" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2015</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_C48AECDB3C205A10B342867D53E8E288" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_C48AECDB3C205A10B342867D53E8E288" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_C48AECDB3C205A10B342867D53E8E288" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_04D072146D52ECCDECF8867D53E83B4E_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_04D072146D52ECCDECF8867D53E83B4E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2016</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_9382F9BADEA6F5A7A93E867D53E85B70" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_9382F9BADEA6F5A7A93E867D53E85B70" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_9382F9BADEA6F5A7A93E867D53E85B70" xlink:type="arc" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_D14D534D080C24A85870867D53E82E7F" xlink:type="locator" />
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    <link:label id="lab_rmbs_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour_85A66AF4BDDFFDAA988F867D53E887EF_terseLabel_en-US" xlink:label="lab_rmbs_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour_85A66AF4BDDFFDAA988F867D53E887EF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Thereafter</link:label>
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    <link:label id="lab_rmbs_FavorableContractsMember_2EF32B64B6F669D8EDCA92149A62C516_documentation_en-US" xlink:label="lab_rmbs_FavorableContractsMember_2EF32B64B6F669D8EDCA92149A62C516" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the information pertaining to the favorable contracts which are acquired patent licensing agreements where the entity has no performance obligations.</link:label>
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    <link:label id="lab_rmbs_GainFromSettlementMember_5712CB3ECAD69CE544F5485388B02FAA_terseLabel_en-US" xlink:label="lab_rmbs_GainFromSettlementMember_5712CB3ECAD69CE544F5485388B02FAA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gain from settlement</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_GainFromSettlementMember_5712CB3ECAD69CE544F5485388B02FAA" xlink:to="lab_rmbs_GainFromSettlementMember_5712CB3ECAD69CE544F5485388B02FAA" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromLegalSettlements_9F62D67B1D908CDA5B64485388B02924_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromLegalSettlements_9F62D67B1D908CDA5B64485388B02924" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash Received to date in 2014</link:label>
    <link:label id="lab_us-gaap_ProceedsFromLegalSettlements_9F62D67B1D908CDA5B64485388B02924_label_en-US" xlink:label="lab_us-gaap_ProceedsFromLegalSettlements_9F62D67B1D908CDA5B64485388B02924" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Legal Settlements</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromLegalSettlements" xlink:label="loc_us-gaap_ProceedsFromLegalSettlements_9F62D67B1D908CDA5B64485388B02924" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromLegalSettlements_9F62D67B1D908CDA5B64485388B02924" xlink:to="lab_us-gaap_ProceedsFromLegalSettlements_9F62D67B1D908CDA5B64485388B02924" xlink:type="arc" />
    <link:label id="lab_rmbs_SettlementAgreementFutureReceivablesRemainderOfFiscalYear_8D02D6788020CCA78797485388B09AD1_terseLabel_en-US" xlink:label="lab_rmbs_SettlementAgreementFutureReceivablesRemainderOfFiscalYear_8D02D6788020CCA78797485388B09AD1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated to Be Received in Remainder of 2014</link:label>
    <link:label id="lab_rmbs_SettlementAgreementFutureReceivablesRemainderOfFiscalYear_8D02D6788020CCA78797485388B09AD1_label_en-US" xlink:label="lab_rmbs_SettlementAgreementFutureReceivablesRemainderOfFiscalYear_8D02D6788020CCA78797485388B09AD1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Settlement Agreement, Future Receivables, Remainder Of Fiscal Year</link:label>
    <link:label id="lab_rmbs_SettlementAgreementFutureReceivablesRemainderOfFiscalYear_8D02D6788020CCA78797485388B09AD1_documentation_en-US" xlink:label="lab_rmbs_SettlementAgreementFutureReceivablesRemainderOfFiscalYear_8D02D6788020CCA78797485388B09AD1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Settlement Agreement, Future Receivables due within the remainder of current fiscal year.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_SettlementAgreementFutureReceivablesRemainderOfFiscalYear" xlink:label="loc_rmbs_SettlementAgreementFutureReceivablesRemainderOfFiscalYear_8D02D6788020CCA78797485388B09AD1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_SettlementAgreementFutureReceivablesRemainderOfFiscalYear_8D02D6788020CCA78797485388B09AD1" xlink:to="lab_rmbs_SettlementAgreementFutureReceivablesRemainderOfFiscalYear_8D02D6788020CCA78797485388B09AD1" xlink:type="arc" />
    <link:label id="lab_rmbs_SettlementAgreementFutureReceivablesDueinFirstFullFiscalYear_CA4C155B55310E4F3556485388B0C595_terseLabel_en-US" xlink:label="lab_rmbs_SettlementAgreementFutureReceivablesDueinFirstFullFiscalYear_CA4C155B55310E4F3556485388B0C595" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated to Be Received in 2015</link:label>
    <link:label id="lab_rmbs_SettlementAgreementFutureReceivablesDueinFirstFullFiscalYear_CA4C155B55310E4F3556485388B0C595_label_en-US" xlink:label="lab_rmbs_SettlementAgreementFutureReceivablesDueinFirstFullFiscalYear_CA4C155B55310E4F3556485388B0C595" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Settlement Agreement, Future Receivables, Due in First Full Fiscal Year</link:label>
    <link:label id="lab_rmbs_SettlementAgreementFutureReceivablesDueinFirstFullFiscalYear_CA4C155B55310E4F3556485388B0C595_documentation_en-US" xlink:label="lab_rmbs_SettlementAgreementFutureReceivablesDueinFirstFullFiscalYear_CA4C155B55310E4F3556485388B0C595" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Settlement Agreement, Future Receivables, Due within the first full fiscal year following the date of the most recent balance sheet.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_SettlementAgreementFutureReceivablesDueinFirstFullFiscalYear" xlink:label="loc_rmbs_SettlementAgreementFutureReceivablesDueinFirstFullFiscalYear_CA4C155B55310E4F3556485388B0C595" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_SettlementAgreementFutureReceivablesDueinFirstFullFiscalYear_CA4C155B55310E4F3556485388B0C595" xlink:to="lab_rmbs_SettlementAgreementFutureReceivablesDueinFirstFullFiscalYear_CA4C155B55310E4F3556485388B0C595" xlink:type="arc" />
    <link:label id="lab_rmbs_SettlementAgreementFutureReceivablesDueinSecondFullFiscalYear_824A62BB14BD17CAD7CC485388B07B0D_terseLabel_en-US" xlink:label="lab_rmbs_SettlementAgreementFutureReceivablesDueinSecondFullFiscalYear_824A62BB14BD17CAD7CC485388B07B0D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated to Be Received in 2016</link:label>
    <link:label id="lab_rmbs_SettlementAgreementFutureReceivablesDueinSecondFullFiscalYear_824A62BB14BD17CAD7CC485388B07B0D_label_en-US" xlink:label="lab_rmbs_SettlementAgreementFutureReceivablesDueinSecondFullFiscalYear_824A62BB14BD17CAD7CC485388B07B0D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Settlement Agreement, Future Receivables, Due in Second Full Fiscal Year</link:label>
    <link:label id="lab_rmbs_SettlementAgreementFutureReceivablesDueinSecondFullFiscalYear_824A62BB14BD17CAD7CC485388B07B0D_documentation_en-US" xlink:label="lab_rmbs_SettlementAgreementFutureReceivablesDueinSecondFullFiscalYear_824A62BB14BD17CAD7CC485388B07B0D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Settlement Agreement, Future Receivables, Due within the second full fiscal year following the date of the most recent balance sheet.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_SettlementAgreementFutureReceivablesDueinSecondFullFiscalYear" xlink:label="loc_rmbs_SettlementAgreementFutureReceivablesDueinSecondFullFiscalYear_824A62BB14BD17CAD7CC485388B07B0D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_SettlementAgreementFutureReceivablesDueinSecondFullFiscalYear_824A62BB14BD17CAD7CC485388B07B0D" xlink:to="lab_rmbs_SettlementAgreementFutureReceivablesDueinSecondFullFiscalYear_824A62BB14BD17CAD7CC485388B07B0D" xlink:type="arc" />
    <link:label id="lab_rmbs_SettlementAgreementFutureReceivablesDueinThirdFiscalYear_407A6406460547030004485388B0350F_terseLabel_en-US" xlink:label="lab_rmbs_SettlementAgreementFutureReceivablesDueinThirdFiscalYear_407A6406460547030004485388B0350F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated to Be Received in 2017</link:label>
    <link:label id="lab_rmbs_SettlementAgreementFutureReceivablesDueinThirdFiscalYear_407A6406460547030004485388B0350F_label_en-US" xlink:label="lab_rmbs_SettlementAgreementFutureReceivablesDueinThirdFiscalYear_407A6406460547030004485388B0350F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Settlement Agreement, Future Receivables, Due in Third Fiscal Year</link:label>
    <link:label id="lab_rmbs_SettlementAgreementFutureReceivablesDueinThirdFiscalYear_407A6406460547030004485388B0350F_documentation_en-US" xlink:label="lab_rmbs_SettlementAgreementFutureReceivablesDueinThirdFiscalYear_407A6406460547030004485388B0350F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Settlement Agreement, Future Receivables,  Due within the third full fiscal year following the date of the most recent balance sheet.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_SettlementAgreementFutureReceivablesDueinThirdFiscalYear" xlink:label="loc_rmbs_SettlementAgreementFutureReceivablesDueinThirdFiscalYear_407A6406460547030004485388B0350F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_SettlementAgreementFutureReceivablesDueinThirdFiscalYear_407A6406460547030004485388B0350F" xlink:to="lab_rmbs_SettlementAgreementFutureReceivablesDueinThirdFiscalYear_407A6406460547030004485388B0350F" xlink:type="arc" />
    <link:label id="lab_rmbs_SettlementAgreementFutureReceivablesDueinFourthFullFiscalYear_F86D990405228AC5A4FE485388B02548_terseLabel_en-US" xlink:label="lab_rmbs_SettlementAgreementFutureReceivablesDueinFourthFullFiscalYear_F86D990405228AC5A4FE485388B02548" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated to Be Received in 2018</link:label>
    <link:label id="lab_rmbs_SettlementAgreementFutureReceivablesDueinFourthFullFiscalYear_F86D990405228AC5A4FE485388B02548_label_en-US" xlink:label="lab_rmbs_SettlementAgreementFutureReceivablesDueinFourthFullFiscalYear_F86D990405228AC5A4FE485388B02548" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Settlement Agreement, Future Receivables, Due in Fourth Full Fiscal Year</link:label>
    <link:label id="lab_rmbs_SettlementAgreementFutureReceivablesDueinFourthFullFiscalYear_F86D990405228AC5A4FE485388B02548_documentation_en-US" xlink:label="lab_rmbs_SettlementAgreementFutureReceivablesDueinFourthFullFiscalYear_F86D990405228AC5A4FE485388B02548" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Settlement Agreement, Future Receivables, Due within the fourth full fiscal year following the date of the most recent balance sheet.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_SettlementAgreementFutureReceivablesDueinFourthFullFiscalYear" xlink:label="loc_rmbs_SettlementAgreementFutureReceivablesDueinFourthFullFiscalYear_F86D990405228AC5A4FE485388B02548" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_SettlementAgreementFutureReceivablesDueinFourthFullFiscalYear_F86D990405228AC5A4FE485388B02548" xlink:to="lab_rmbs_SettlementAgreementFutureReceivablesDueinFourthFullFiscalYear_F86D990405228AC5A4FE485388B02548" xlink:type="arc" />
    <link:label id="lab_rmbs_SettlementAgreementFutureReceivablesDueInFifthFullFiscalYearAndThereafter_BA88FFE0576A508DAFDE4863511335D9_terseLabel_en-US" xlink:label="lab_rmbs_SettlementAgreementFutureReceivablesDueInFifthFullFiscalYearAndThereafter_BA88FFE0576A508DAFDE4863511335D9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated to Be Received in 2019 and thereafter</link:label>
    <link:label id="lab_rmbs_SettlementAgreementFutureReceivablesDueInFifthFullFiscalYearAndThereafter_BA88FFE0576A508DAFDE4863511335D9_label_en-US" xlink:label="lab_rmbs_SettlementAgreementFutureReceivablesDueInFifthFullFiscalYearAndThereafter_BA88FFE0576A508DAFDE4863511335D9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Settlement Agreement, Future Receivables, Due In Fifth Full Fiscal Year And Thereafter</link:label>
    <link:label id="lab_rmbs_SettlementAgreementFutureReceivablesDueInFifthFullFiscalYearAndThereafter_BA88FFE0576A508DAFDE4863511335D9_documentation_en-US" xlink:label="lab_rmbs_SettlementAgreementFutureReceivablesDueInFifthFullFiscalYearAndThereafter_BA88FFE0576A508DAFDE4863511335D9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Settlement Agreement, Future Receivables, Due In Fifth Full Fiscal Year And Thereafter</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_SettlementAgreementFutureReceivablesDueInFifthFullFiscalYearAndThereafter" xlink:label="loc_rmbs_SettlementAgreementFutureReceivablesDueInFifthFullFiscalYearAndThereafter_BA88FFE0576A508DAFDE4863511335D9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_SettlementAgreementFutureReceivablesDueInFifthFullFiscalYearAndThereafter_BA88FFE0576A508DAFDE4863511335D9" xlink:to="lab_rmbs_SettlementAgreementFutureReceivablesDueInFifthFullFiscalYearAndThereafter_BA88FFE0576A508DAFDE4863511335D9" xlink:type="arc" />
    <link:label id="lab_rmbs_SettlementAgreementConsideration_8BCA1CD34797E2D40E5C485388B1DC73_verboseLabel_en-US" xlink:label="lab_rmbs_SettlementAgreementConsideration_8BCA1CD34797E2D40E5C485388B1DC73" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total Estimated Cash receipts</link:label>
    <link:label id="lab_rmbs_SettlementAgreementConsideration_8BCA1CD34797E2D40E5C485388B1DC73_label_en-US" xlink:label="lab_rmbs_SettlementAgreementConsideration_8BCA1CD34797E2D40E5C485388B1DC73" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Settlement Agreement, Consideration</link:label>
    <link:label id="lab_rmbs_SettlementAgreementConsideration_8BCA1CD34797E2D40E5C485388B1DC73_documentation_en-US" xlink:label="lab_rmbs_SettlementAgreementConsideration_8BCA1CD34797E2D40E5C485388B1DC73" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Settlement Agreement, Consideration</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_SettlementAgreementConsideration" xlink:label="loc_rmbs_SettlementAgreementConsideration_8BCA1CD34797E2D40E5C485388B1DC73" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_SettlementAgreementConsideration_8BCA1CD34797E2D40E5C485388B1DC73" xlink:to="lab_rmbs_SettlementAgreementConsideration_8BCA1CD34797E2D40E5C485388B1DC73" xlink:type="arc" />
    <link:label id="lab_rmbs_AvailableForSaleSecuritiesAndCashSummaryTable_021D47C70DEFA57B9BE791517E1C9405_terseLabel_en-US" xlink:label="lab_rmbs_AvailableForSaleSecuritiesAndCashSummaryTable_021D47C70DEFA57B9BE791517E1C9405" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Available for sale securities and cash summary [Table]</link:label>
    <link:label id="lab_rmbs_AvailableForSaleSecuritiesAndCashSummaryTable_021D47C70DEFA57B9BE791517E1C9405_label_en-US" xlink:label="lab_rmbs_AvailableForSaleSecuritiesAndCashSummaryTable_021D47C70DEFA57B9BE791517E1C9405" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available For Sale Securities And Cash Summary [Table]</link:label>
    <link:label id="lab_rmbs_AvailableForSaleSecuritiesAndCashSummaryTable_021D47C70DEFA57B9BE791517E1C9405_documentation_en-US" xlink:label="lab_rmbs_AvailableForSaleSecuritiesAndCashSummaryTable_021D47C70DEFA57B9BE791517E1C9405" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Summarization of information required and determined to be disclosed concerning Available-for-sale Securities and cash which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_AvailableForSaleSecuritiesAndCashSummaryTable" xlink:label="loc_rmbs_AvailableForSaleSecuritiesAndCashSummaryTable_021D47C70DEFA57B9BE791517E1C9405" xlink:type="locator" />
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    <link:label id="lab_us-gaap_CashEquivalentsMember_F98C36CE8406FBA78B6691517E1D6AFE_terseLabel_en-US" xlink:label="lab_us-gaap_CashEquivalentsMember_F98C36CE8406FBA78B6691517E1D6AFE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash equivalents</link:label>
    <link:label id="lab_us-gaap_CashEquivalentsMember_F98C36CE8406FBA78B6691517E1D6AFE_label_en-US" xlink:label="lab_us-gaap_CashEquivalentsMember_F98C36CE8406FBA78B6691517E1D6AFE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash Equivalents [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CashEquivalentsMember" xlink:label="loc_us-gaap_CashEquivalentsMember_F98C36CE8406FBA78B6691517E1D6AFE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashEquivalentsMember_F98C36CE8406FBA78B6691517E1D6AFE" xlink:to="lab_us-gaap_CashEquivalentsMember_F98C36CE8406FBA78B6691517E1D6AFE" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShortTermInvestmentsMember_844C7F53DA6B7C5E99E291517E1D2777_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermInvestmentsMember_844C7F53DA6B7C5E99E291517E1D2777" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short term marketable securities</link:label>
    <link:label id="lab_us-gaap_ShortTermInvestmentsMember_844C7F53DA6B7C5E99E291517E1D2777_label_en-US" xlink:label="lab_us-gaap_ShortTermInvestmentsMember_844C7F53DA6B7C5E99E291517E1D2777" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-term Investments [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShortTermInvestmentsMember" xlink:label="loc_us-gaap_ShortTermInvestmentsMember_844C7F53DA6B7C5E99E291517E1D2777" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShortTermInvestmentsMember_844C7F53DA6B7C5E99E291517E1D2777" xlink:to="lab_us-gaap_ShortTermInvestmentsMember_844C7F53DA6B7C5E99E291517E1D2777" xlink:type="arc" />
    <link:label id="lab_rmbs_ScheduleOfAvailableForSaleSecuritiesAndCashLineItems_97CA808033F734F2500891517E1D7311_terseLabel_en-US" xlink:label="lab_rmbs_ScheduleOfAvailableForSaleSecuritiesAndCashLineItems_97CA808033F734F2500891517E1D7311" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash equivalents and marketable securities</link:label>
    <link:label id="lab_rmbs_ScheduleOfAvailableForSaleSecuritiesAndCashLineItems_97CA808033F734F2500891517E1D7311_label_en-US" xlink:label="lab_rmbs_ScheduleOfAvailableForSaleSecuritiesAndCashLineItems_97CA808033F734F2500891517E1D7311" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Available for sale Securities and Cash [Line Items]</link:label>
    <link:label id="lab_rmbs_ScheduleOfAvailableForSaleSecuritiesAndCashLineItems_97CA808033F734F2500891517E1D7311_documentation_en-US" xlink:label="lab_rmbs_ScheduleOfAvailableForSaleSecuritiesAndCashLineItems_97CA808033F734F2500891517E1D7311" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">-- None. No documentation exists for this element. --</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_ScheduleOfAvailableForSaleSecuritiesAndCashLineItems" xlink:label="loc_rmbs_ScheduleOfAvailableForSaleSecuritiesAndCashLineItems_97CA808033F734F2500891517E1D7311" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_ScheduleOfAvailableForSaleSecuritiesAndCashLineItems_97CA808033F734F2500891517E1D7311" xlink:to="lab_rmbs_ScheduleOfAvailableForSaleSecuritiesAndCashLineItems_97CA808033F734F2500891517E1D7311" xlink:type="arc" />
    <link:label id="lab_rmbs_MaximumMaturityPeriodAvailableForSaleSecurities_C2AC0CB47844E69F9A7191517E1D5312_terseLabel_en-US" xlink:label="lab_rmbs_MaximumMaturityPeriodAvailableForSaleSecurities_C2AC0CB47844E69F9A7191517E1D5312" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maximum maturity period of available-for-sale securities (in years)</link:label>
    <link:label id="lab_rmbs_MaximumMaturityPeriodAvailableForSaleSecurities_C2AC0CB47844E69F9A7191517E1D5312_label_en-US" xlink:label="lab_rmbs_MaximumMaturityPeriodAvailableForSaleSecurities_C2AC0CB47844E69F9A7191517E1D5312" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Maximum Maturity Period, Available-for-sale Securities</link:label>
    <link:label id="lab_rmbs_MaximumMaturityPeriodAvailableForSaleSecurities_C2AC0CB47844E69F9A7191517E1D5312_documentation_en-US" xlink:label="lab_rmbs_MaximumMaturityPeriodAvailableForSaleSecurities_C2AC0CB47844E69F9A7191517E1D5312" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the maximum maturity period of securities invested by the entity.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_MaximumMaturityPeriodAvailableForSaleSecurities" xlink:label="loc_rmbs_MaximumMaturityPeriodAvailableForSaleSecurities_C2AC0CB47844E69F9A7191517E1D5312" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_MaximumMaturityPeriodAvailableForSaleSecurities_C2AC0CB47844E69F9A7191517E1D5312" xlink:to="lab_rmbs_MaximumMaturityPeriodAvailableForSaleSecurities_C2AC0CB47844E69F9A7191517E1D5312" xlink:type="arc" />
    <link:label id="lab_rmbs_MaximumRemainingMaturityPeriodAvailableForSaleSecurities_59FAF56FD3D47BFF92A091517E1DEB43_terseLabel_en-US" xlink:label="lab_rmbs_MaximumRemainingMaturityPeriodAvailableForSaleSecurities_59FAF56FD3D47BFF92A091517E1DEB43" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maximum remaining maturity period of available-for-sale securities (in years)</link:label>
    <link:label id="lab_rmbs_MaximumRemainingMaturityPeriodAvailableForSaleSecurities_59FAF56FD3D47BFF92A091517E1DEB43_label_en-US" xlink:label="lab_rmbs_MaximumRemainingMaturityPeriodAvailableForSaleSecurities_59FAF56FD3D47BFF92A091517E1DEB43" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Maximum Remaining Maturity Period Available-for-sale Securities</link:label>
    <link:label id="lab_rmbs_MaximumRemainingMaturityPeriodAvailableForSaleSecurities_59FAF56FD3D47BFF92A091517E1DEB43_documentation_en-US" xlink:label="lab_rmbs_MaximumRemainingMaturityPeriodAvailableForSaleSecurities_59FAF56FD3D47BFF92A091517E1DEB43" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the maximum remaining maturity period of securities invested by the entity.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_MaximumRemainingMaturityPeriodAvailableForSaleSecurities" xlink:label="loc_rmbs_MaximumRemainingMaturityPeriodAvailableForSaleSecurities_59FAF56FD3D47BFF92A091517E1DEB43" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_MaximumRemainingMaturityPeriodAvailableForSaleSecurities_59FAF56FD3D47BFF92A091517E1DEB43" xlink:to="lab_rmbs_MaximumRemainingMaturityPeriodAvailableForSaleSecurities_59FAF56FD3D47BFF92A091517E1DEB43" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecurities_E355DC92FB39061041EA91517E1D8D72_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecurities_E355DC92FB39061041EA91517E1D8D72" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AvailableForSaleSecurities" xlink:label="loc_us-gaap_AvailableForSaleSecurities_E355DC92FB39061041EA91517E1D8D72" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecurities_E355DC92FB39061041EA91517E1D8D72" xlink:to="lab_us-gaap_AvailableForSaleSecurities_E355DC92FB39061041EA91517E1D8D72" xlink:type="arc" />
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesAmortizedCost_A2CE1877ED37D33D387891517E1D6E08_terseLabel_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesAmortizedCost_A2CE1877ED37D33D387891517E1D6E08" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortized Cost</link:label>
    <link:label id="lab_us-gaap_AvailableForSaleSecuritiesAmortizedCost_A2CE1877ED37D33D387891517E1D6E08_label_en-US" xlink:label="lab_us-gaap_AvailableForSaleSecuritiesAmortizedCost_A2CE1877ED37D33D387891517E1D6E08" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available-for-sale Securities, Amortized Cost Basis</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAmortizedCost" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesAmortizedCost_A2CE1877ED37D33D387891517E1D6E08" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAmortizedCost_A2CE1877ED37D33D387891517E1D6E08" xlink:to="lab_us-gaap_AvailableForSaleSecuritiesAmortizedCost_A2CE1877ED37D33D387891517E1D6E08" xlink:type="arc" />
    <link:label id="lab_rmbs_CashCashEquivalentsAndShortTermInvestmentsUnrealizedGains_E4DABFF88A03994D85B191517E1DFD53_terseLabel_en-US" xlink:label="lab_rmbs_CashCashEquivalentsAndShortTermInvestmentsUnrealizedGains_E4DABFF88A03994D85B191517E1DFD53" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gross Unrealized Gains</link:label>
    <link:label id="lab_rmbs_CashCashEquivalentsAndShortTermInvestmentsUnrealizedGains_E4DABFF88A03994D85B191517E1DFD53_label_en-US" xlink:label="lab_rmbs_CashCashEquivalentsAndShortTermInvestmentsUnrealizedGains_E4DABFF88A03994D85B191517E1DFD53" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash Cash Equivalents And Short Term Investments Unrealized Gains</link:label>
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    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_CashCashEquivalentsAndShortTermInvestmentsUnrealizedGains" xlink:label="loc_rmbs_CashCashEquivalentsAndShortTermInvestmentsUnrealizedGains_E4DABFF88A03994D85B191517E1DFD53" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_CashCashEquivalentsAndShortTermInvestmentsUnrealizedGains_E4DABFF88A03994D85B191517E1DFD53" xlink:to="lab_rmbs_CashCashEquivalentsAndShortTermInvestmentsUnrealizedGains_E4DABFF88A03994D85B191517E1DFD53" xlink:type="arc" />
    <link:label id="lab_rmbs_CashCashEquivalentsAndShortTermInvestmentsUnrealizedLosses_85F6FEBE6E8EE27BBEB391517E1DEF8C_negatedTerseLabel_en-US" xlink:label="lab_rmbs_CashCashEquivalentsAndShortTermInvestmentsUnrealizedLosses_85F6FEBE6E8EE27BBEB391517E1DEF8C" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Gross Unrealized Losses</link:label>
    <link:label id="lab_rmbs_CashCashEquivalentsAndShortTermInvestmentsUnrealizedLosses_85F6FEBE6E8EE27BBEB391517E1DEF8C_label_en-US" xlink:label="lab_rmbs_CashCashEquivalentsAndShortTermInvestmentsUnrealizedLosses_85F6FEBE6E8EE27BBEB391517E1DEF8C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">CashCashEquivalentsAndShortTermInvestmentsUnrealizedLosses</link:label>
    <link:label id="lab_rmbs_CashCashEquivalentsAndShortTermInvestmentsUnrealizedLosses_85F6FEBE6E8EE27BBEB391517E1DEF8C_documentation_en-US" xlink:label="lab_rmbs_CashCashEquivalentsAndShortTermInvestmentsUnrealizedLosses_85F6FEBE6E8EE27BBEB391517E1DEF8C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cash Cash Equivalents And Short Term Investments Unrealized Losses</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_CashCashEquivalentsAndShortTermInvestmentsUnrealizedLosses" xlink:label="loc_rmbs_CashCashEquivalentsAndShortTermInvestmentsUnrealizedLosses_85F6FEBE6E8EE27BBEB391517E1DEF8C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_CashCashEquivalentsAndShortTermInvestmentsUnrealizedLosses_85F6FEBE6E8EE27BBEB391517E1DEF8C" xlink:to="lab_rmbs_CashCashEquivalentsAndShortTermInvestmentsUnrealizedLosses_85F6FEBE6E8EE27BBEB391517E1DEF8C" xlink:type="arc" />
    <link:label id="lab_rmbs_AvailableForSaleSecuritiesWeightedRateOfReturn_78E1CBF4134058E6606E91517E1D0A64_terseLabel_en-US" xlink:label="lab_rmbs_AvailableForSaleSecuritiesWeightedRateOfReturn_78E1CBF4134058E6606E91517E1D0A64" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted Rate of Return (as a percent)</link:label>
    <link:label id="lab_rmbs_AvailableForSaleSecuritiesWeightedRateOfReturn_78E1CBF4134058E6606E91517E1D0A64_label_en-US" xlink:label="lab_rmbs_AvailableForSaleSecuritiesWeightedRateOfReturn_78E1CBF4134058E6606E91517E1D0A64" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Available for sale Securities, Weighted Rate of Return</link:label>
    <link:label id="lab_rmbs_AvailableForSaleSecuritiesWeightedRateOfReturn_78E1CBF4134058E6606E91517E1D0A64_documentation_en-US" xlink:label="lab_rmbs_AvailableForSaleSecuritiesWeightedRateOfReturn_78E1CBF4134058E6606E91517E1D0A64" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This item represents the weighted rate of return on marketable securities like money market funds, U.S. government bonds and notes, corporate notes, bonds and commercial paper, corporate securities and cash and cash equivalents.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_AvailableForSaleSecuritiesWeightedRateOfReturn" xlink:label="loc_rmbs_AvailableForSaleSecuritiesWeightedRateOfReturn_78E1CBF4134058E6606E91517E1D0A64" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_AvailableForSaleSecuritiesWeightedRateOfReturn_78E1CBF4134058E6606E91517E1D0A64" xlink:to="lab_rmbs_AvailableForSaleSecuritiesWeightedRateOfReturn_78E1CBF4134058E6606E91517E1D0A64" xlink:type="arc" />
    <link:label id="lab_rmbs_CashFairValueDisclosure_79FF21DF7FF958076C7391517E1EF0DC_terseLabel_en-US" xlink:label="lab_rmbs_CashFairValueDisclosure_79FF21DF7FF958076C7391517E1EF0DC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash, fair value</link:label>
    <link:label id="lab_rmbs_CashFairValueDisclosure_79FF21DF7FF958076C7391517E1EF0DC_label_en-US" xlink:label="lab_rmbs_CashFairValueDisclosure_79FF21DF7FF958076C7391517E1EF0DC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash, Fair Value Disclosure</link:label>
    <link:label id="lab_rmbs_CashFairValueDisclosure_79FF21DF7FF958076C7391517E1EF0DC_documentation_en-US" xlink:label="lab_rmbs_CashFairValueDisclosure_79FF21DF7FF958076C7391517E1EF0DC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the company may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_CashFairValueDisclosure" xlink:label="loc_rmbs_CashFairValueDisclosure_79FF21DF7FF958076C7391517E1EF0DC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_CashFairValueDisclosure_79FF21DF7FF958076C7391517E1EF0DC" xlink:to="lab_rmbs_CashFairValueDisclosure_79FF21DF7FF958076C7391517E1EF0DC" xlink:type="arc" />
    <link:label id="lab_us-gaap_Cash_350F73AD42BA184B2A3191517E1EC9D6_terseLabel_en-US" xlink:label="lab_us-gaap_Cash_350F73AD42BA184B2A3191517E1EC9D6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash, amortized cost</link:label>
    <link:label id="lab_us-gaap_Cash_350F73AD42BA184B2A3191517E1EC9D6_label_en-US" xlink:label="lab_us-gaap_Cash_350F73AD42BA184B2A3191517E1EC9D6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Cash" xlink:label="loc_us-gaap_Cash_350F73AD42BA184B2A3191517E1EC9D6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Cash_350F73AD42BA184B2A3191517E1EC9D6" xlink:to="lab_us-gaap_Cash_350F73AD42BA184B2A3191517E1EC9D6" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashCashEquivalentsAndShortTermInvestmentsAbstract_8380D176664FFA69967C91517E1EFD3F_terseLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsAndShortTermInvestmentsAbstract_8380D176664FFA69967C91517E1EFD3F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash, cash equivalents and marketable securities</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CashCashEquivalentsAndShortTermInvestmentsAbstract" xlink:label="loc_us-gaap_CashCashEquivalentsAndShortTermInvestmentsAbstract_8380D176664FFA69967C91517E1EFD3F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsAndShortTermInvestmentsAbstract_8380D176664FFA69967C91517E1EFD3F" xlink:to="lab_us-gaap_CashCashEquivalentsAndShortTermInvestmentsAbstract_8380D176664FFA69967C91517E1EFD3F" xlink:type="arc" />
    <link:label id="lab_rmbs_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure_FFD5C3804B668B5D9E3591517E1EEC27_totalLabel_en-US" xlink:label="lab_rmbs_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure_FFD5C3804B668B5D9E3591517E1EEC27" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Fair Value</link:label>
    <link:label id="lab_rmbs_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure_FFD5C3804B668B5D9E3591517E1EEC27_label_en-US" xlink:label="lab_rmbs_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure_FFD5C3804B668B5D9E3591517E1EEC27" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash, Cash Equivalents and Short Term Investments, Fair Value Disclosure</link:label>
    <link:label id="lab_rmbs_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure_FFD5C3804B668B5D9E3591517E1EEC27_documentation_en-US" xlink:label="lab_rmbs_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure_FFD5C3804B668B5D9E3591517E1EEC27" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents the aggregate of cash, cash equivalents and marketable securities reported on the balance sheet at period end measured at fair value by the entity.</link:label>
    <link:loc xlink:href="rmbs-20140331.xsd#rmbs_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure" xlink:label="loc_rmbs_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure_FFD5C3804B668B5D9E3591517E1EEC27" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_rmbs_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure_FFD5C3804B668B5D9E3591517E1EEC27" xlink:to="lab_rmbs_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure_FFD5C3804B668B5D9E3591517E1EEC27" xlink:type="arc" />
    <link:label id="lab_rmbs_CashCashEquivalentsAndShortTermInvestmentsAmortizedCostDisclosure_FA52BB62F7F9FEB1B83C91517E1EC053_totalLabel_en-US" xlink:label="lab_rmbs_CashCashEquivalentsAndShortTermInvestmentsAmortizedCostDisclosure_FA52BB62F7F9FEB1B83C91517E1EC053" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Amortized Cost</link:label>
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