<SUBMISSION>
<ACCESSION-NUMBER>0001243233-08-000022
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20080319
<FILING-DATE>20080321
<DATE-OF-FILING-DATE-CHANGE>20080321
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>NVIDIA CORP
<CIK>0001045810
<ASSIGNED-SIC>3674
<IRS-NUMBER>943177549
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>0129
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>2701 SAN TOMAS EXPRESSWAY
<CITY>SANTA CLARA
<STATE>CA
<ZIP>95050
<PHONE>408-486-2000
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>2701 SAN TOMAS EXPRESSWAY
<CITY>SANTA CLARA
<STATE>CA
<ZIP>95050
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>NVIDIA CORP/DE
<DATE-CHANGED>20020612
</FORMER-COMPANY>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>NVIDIA CORP/CA
<DATE-CHANGED>19980303
</FORMER-COMPANY>
</ISSUER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>SHOQUIST DEBBIE
<CIK>0001283854
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>000-23985
<FILM-NUMBER>08705045
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>C/O JDS UNIPHASE CORP
<STREET2>1768 AUTOMATION PKWY
<CITY>SAN JOSE
<STATE>CA
<ZIP>95131
<PHONE>4085465000
</BUSINESS-ADDRESS>
</REPORTING-OWNER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-03-19</periodOfReport>

    <issuer>
        <issuerCik>0001045810</issuerCik>
        <issuerName>NVIDIA CORP</issuerName>
        <issuerTradingSymbol>NVDA</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001283854</rptOwnerCik>
            <rptOwnerName>SHOQUIST DEBBIE</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O NVIDIA CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>2701 SAN TOMAS EXPRESSWAY</rptOwnerStreet2>
            <rptOwnerCity>SANTA CLARA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95050</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Senior VP, Operations</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>17.66</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2008-03-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>75000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2014-03-19</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>75000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>75000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Fifty percent of the option shall vest two years and three months from March 19, 2008 which is June 19, 2010 and the remaining fifty percent shall vest two years and six months from March 19, 2008 which is September 19, 2010, such that the option shall be fully vested on the two year and six month anniversary of the grant date which is September 19, 2010.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Christine Lillquist, Attorney-in-Fact</signatureName>
        <signatureDate>2008-03-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
