v2.3.0.15

Commitments and Contingencies (Details) (USD $)	9 Months Ended
	Oct. 30, 2011		Oct. 31, 2010	Jan. 30, 2011
Notes to financial statements [Abstract]
Aggregate purchase price of acquisition paid initially, net of direct costs	$ 70,000,000
Excess of assessed fair value over acquisition price paid	50,000,000
Assessed value of asset purchase	108,000,000
Accrued legal settlement (3)	30,600,000	[1]		30,600,000	[1]
Various administrative expenses and Trustee fees included in conditional settlement payment	5,600,000
Conditional settlement assessed to satisfy debts and liabilities owed to the general unsecured creditors of 3dfx.	25,000,000
Royalty calculated as a percentage of net sales for certain memory controllers	1.00%
Royalty calculated as a percentage of net sales for other memory controllers	2.00%
Cap on the maximum average net sales price per unit on royalty bearing products	20
Net warranty charge against cost of revenue			181,200,000
Net warranty charge against sales, general, and administrative expense			$ 12,700,000
[1] Please refer to Note 14 of these Notes to Condensed Consolidated Financial Statements for discussion regarding the 3dfx litigation.

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Conditional settlement assessed to satisfy debts and liabilities owed to the general unsecured creditors of 3dfx, including settlement costs for administrative expenses and trustee fees

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Assessed value of the asset purchase

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Additional liability assessed for difference between asset purchase price and alleged fair value.

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The initial aggregate purchase price of certain assets acquired from 3dfx, net of direct costs.

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Portion of 3dfx conditional settlement applicable to administrative and trustee fees.

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Conditional settlement assessed to satisfy debts and liabilities owed to the general unsecured creditors of 3dfx.

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The net warranty charge against cost of revenue for the weak die/packaging material set.

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The net warranty charge against sales, general, and administrative expense related to settlements and remediation with the litigation on the weak die/packaging material set.

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The maximum average net sales price per unit for the royalty bearing products.

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Royalty rate on net sales of other memory controllers as stated in memory controller patent license agreement with Rambus.

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Royalty rate on net sales of SDR memory controllers as stated in memory controller patent license agreement with Rambus.

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