<?xml version="1.0"?><?xml-stylesheet type="text/xsl" href="../4_X02.xsl"?><ownershipDocument>    <schemaVersion>X0303</schemaVersion>    <documentType>4</documentType>    <periodOfReport>2010-01-12</periodOfReport>    <notSubjectToSection16>0</notSubjectToSection16>    <issuer>        <issuerCik>0001045810</issuerCik>        <issuerName>NVIDIA CORP</issuerName>        <issuerTradingSymbol>NVDA</issuerTradingSymbol>    </issuer>    <reportingOwner>        <reportingOwnerId>            <rptOwnerCik>0001197653</rptOwnerCik>            <rptOwnerName>SHANNON DAVID M</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>EVP, Gen. Counsel, Secretary</officerTitle>        </reportingOwnerRelationship>    </reportingOwner>    <nonDerivativeTable>        <nonDerivativeTransaction>            <securityTitle>                <value>Common Stock</value>            </securityTitle>            <transactionDate>                <value>2010-01-12</value>            </transactionDate>            <deemedExecutionDate></deemedExecutionDate>            <transactionCoding>                <transactionFormType>4</transactionFormType>                <transactionCode>M</transactionCode>                <equitySwapInvolved>0</equitySwapInvolved>                <footnoteId id="F1"/>            </transactionCoding>            <transactionTimeliness>                <value></value>            </transactionTimeliness>            <transactionAmounts>                <transactionShares>                    <value>5500</value>                </transactionShares>                <transactionPricePerShare>                    <value>8.75</value>                </transactionPricePerShare>                <transactionAcquiredDisposedCode>                    <value>A</value>                </transactionAcquiredDisposedCode>            </transactionAmounts>            <postTransactionAmounts>                <sharesOwnedFollowingTransaction>                    <value>77100</value>                </sharesOwnedFollowingTransaction>            </postTransactionAmounts>            <ownershipNature>                <directOrIndirectOwnership>                    <value>D</value>                </directOrIndirectOwnership>            </ownershipNature>        </nonDerivativeTransaction>        <nonDerivativeTransaction>            <securityTitle>                <value>Common Stock</value>            </securityTitle>            <transactionDate>                <value>2010-01-12</value>            </transactionDate>            <deemedExecutionDate></deemedExecutionDate>            <transactionCoding>                <transactionFormType>5</transactionFormType>                <transactionCode>G</transactionCode>                <equitySwapInvolved>0</equitySwapInvolved>                <footnoteId id="F1"/>            </transactionCoding>            <transactionTimeliness>                <value>E</value>            </transactionTimeliness>            <transactionAmounts>                <transactionShares>                    <value>5500</value>                </transactionShares>                <transactionPricePerShare>                    <value>0.00</value>                </transactionPricePerShare>                <transactionAcquiredDisposedCode>                    <value>D</value>                </transactionAcquiredDisposedCode>            </transactionAmounts>            <postTransactionAmounts>                <sharesOwnedFollowingTransaction>                    <value>71600</value>                </sharesOwnedFollowingTransaction>            </postTransactionAmounts>            <ownershipNature>                <directOrIndirectOwnership>                    <value>D</value>                    <footnoteId id="F2"/>                </directOrIndirectOwnership>            </ownershipNature>        </nonDerivativeTransaction>        <nonDerivativeTransaction>            <securityTitle>                <value>Common Stock</value>            </securityTitle>            <transactionDate>                <value>2010-01-12</value>            </transactionDate>            <deemedExecutionDate></deemedExecutionDate>            <transactionCoding>                <transactionFormType>5</transactionFormType>                <transactionCode>G</transactionCode>                <equitySwapInvolved>0</equitySwapInvolved>                <footnoteId id="F1"/>            </transactionCoding>            <transactionTimeliness>                <value>E</value>            </transactionTimeliness>            <transactionAmounts>                <transactionShares>                    <value>5500</value>                </transactionShares>                <transactionPricePerShare>                    <value>0.00</value>                </transactionPricePerShare>                <transactionAcquiredDisposedCode>                    <value>A</value>                </transactionAcquiredDisposedCode>            </transactionAmounts>            <postTransactionAmounts>                <sharesOwnedFollowingTransaction>                    <value>72380</value>                </sharesOwnedFollowingTransaction>            </postTransactionAmounts>            <ownershipNature>                <directOrIndirectOwnership>                    <value>I</value>                </directOrIndirectOwnership>                <natureOfOwnership>                    <value>Shannon Revocable Trust</value>                    <footnoteId id="F3"/>                </natureOfOwnership>            </ownershipNature>        </nonDerivativeTransaction>        <nonDerivativeTransaction>            <securityTitle>                <value>Common Stock</value>            </securityTitle>            <transactionDate>                <value>2010-01-12</value>            </transactionDate>            <deemedExecutionDate></deemedExecutionDate>            <transactionCoding>                <transactionFormType>4</transactionFormType>                <transactionCode>S</transactionCode>                <equitySwapInvolved>0</equitySwapInvolved>                <footnoteId id="F1"/>            </transactionCoding>            <transactionTimeliness>                <value></value>            </transactionTimeliness>            <transactionAmounts>                <transactionShares>                    <value>5500</value>                </transactionShares>                <transactionPricePerShare>                    <value>17.64</value>                    <footnoteId id="F4"/>                </transactionPricePerShare>                <transactionAcquiredDisposedCode>                    <value>D</value>                </transactionAcquiredDisposedCode>            </transactionAmounts>            <postTransactionAmounts>                <sharesOwnedFollowingTransaction>                    <value>66880</value>                </sharesOwnedFollowingTransaction>            </postTransactionAmounts>            <ownershipNature>                <directOrIndirectOwnership>                    <value>I</value>                </directOrIndirectOwnership>                <natureOfOwnership>                    <value>Shannon Revocable Trust</value>                    <footnoteId id="F3"/>                </natureOfOwnership>            </ownershipNature>        </nonDerivativeTransaction>    </nonDerivativeTable>    <derivativeTable>        <derivativeTransaction>            <securityTitle>                <value>Stock Option (Right to Buy)</value>            </securityTitle>            <conversionOrExercisePrice>                <value>8.75</value>            </conversionOrExercisePrice>            <transactionDate>                <value>2010-01-12</value>            </transactionDate>            <deemedExecutionDate></deemedExecutionDate>            <transactionCoding>                <transactionFormType>4</transactionFormType>                <transactionCode>M</transactionCode>                <equitySwapInvolved>0</equitySwapInvolved>                <footnoteId id="F1"/>            </transactionCoding>            <transactionTimeliness>                <value></value>            </transactionTimeliness>            <transactionAmounts>                <transactionShares>                    <value>5500</value>                </transactionShares>                <transactionPricePerShare>                    <value>0.00</value>                </transactionPricePerShare>                <transactionAcquiredDisposedCode>                    <value>D</value>                </transactionAcquiredDisposedCode>            </transactionAmounts>            <exerciseDate>                <footnoteId id="F5"/>            </exerciseDate>            <expirationDate>                <value>2010-04-12</value>            </expirationDate>            <underlyingSecurity>                <underlyingSecurityTitle>                    <value>Common Stock</value>                </underlyingSecurityTitle>                <underlyingSecurityShares>                    <value>5500</value>                </underlyingSecurityShares>            </underlyingSecurity>            <postTransactionAmounts>                <sharesOwnedFollowingTransaction>                    <value>18070</value>                </sharesOwnedFollowingTransaction>            </postTransactionAmounts>            <ownershipNature>                <directOrIndirectOwnership>                    <value>D</value>                </directOrIndirectOwnership>            </ownershipNature>        </derivativeTransaction>    </derivativeTable>    <footnotes>        <footnote id="F1">This transaction was pursuant to a 10b5-1 Plan.</footnote>        <footnote id="F2">The Reporting Person transferred 5,500 shares to the Shannon Revocable Trust, dated 9/24/1997, of which the Reporting Person is a co-trustee.</footnote>        <footnote id="F3">The shares are held by the Shannon Revocable Trust, dated 9/24/1997, of which the Reporting Person is a co-trustee.</footnote>        <footnote id="F4">Represents weighted average sales price. The shares were sold at prices ranging from $17.33 to $18.06. The Reporting Person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.</footnote>        <footnote id="F5">Fully vested.</footnote>    </footnotes>    <remarks></remarks>    <ownerSignature>        <signatureName>/s/ John T. McKenna, Attorney-in-Fact for David M. Shannon</signatureName>        <signatureDate>2010-01-12</signatureDate>    </ownerSignature></ownershipDocument>