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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 48eFM7EyQ3LqmaNj7V5J/g==

<SEC-DOCUMENT>0001077821-03-000005.txt : 20030702
<SEC-HEADER>0001077821-03-000005.hdr.sgml : 20030702
<ACCEPTANCE-DATETIME>20030702120331
ACCESSION NUMBER:		0001077821-03-000005
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030701
FILED AS OF DATE:		20030702

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DELL COMPUTER CORP
		CENTRAL INDEX KEY:			0000826083
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRONIC COMPUTERS [3571]
		IRS NUMBER:				742487834
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0129

	BUSINESS ADDRESS:	
		STREET 1:		ONE DELL WAY
		STREET 2:		STED
		CITY:			ROUND ROCK
		STATE:			TX
		ZIP:			78682-2244
		BUSINESS PHONE:		5127284737

	MAIL ADDRESS:	
		STREET 1:		ONE DELL WAY
		CITY:			ROUND ROCK
		STATE:			TX
		ZIP:			78682

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MARENGI JOSEPH A
		CENTRAL INDEX KEY:			0001077821

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-17017
		FILM NUMBER:		03770423

	BUSINESS ADDRESS:	
		STREET 1:		C/O DELL COMPUTER CORP
		STREET 2:		ONE DELL WAY
		CITY:			ROUND ROCK
		STATE:			TX
		ZIP:			78682-2244
		BUSINESS PHONE:		5127284737

	MAIL ADDRESS:	
		STREET 1:		C/O DELL COMPUTER CORP
		STREET 2:		ONE DELL WAY
		CITY:			ROUND ROCK
		STATE:			TX
		ZIP:			78682-2244
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0101</schemaVersion>

    <documentType>4</documentType>
    <periodOfReport>2003-07-01</periodOfReport>
    <notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0000826083</issuerCik>
        <issuerName>DELL COMPUTER CORP</issuerName>
        <issuerTradingSymbol>DELL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001077821</rptOwnerCik>
            <rptOwnerName>MARENGI JOSEPH A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>  </rptOwnerStreet1>
            <rptOwnerStreet2>  </rptOwnerStreet2>
            <rptOwnerCity>  </rptOwnerCity>
            <rptOwnerState>  </rptOwnerState>
            <rptOwnerZipCode>  </rptOwnerZipCode>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Senior Vice President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>
   <nonDerivativeSecurity>
      <securityTitle>
          <value>Common Stock</value>
      </securityTitle>
      <transactionDate>
          <value>2003-07-01</value>
      </transactionDate>
      <transactionCoding>
          <transactionFormType>4</transactionFormType>
          <transactionCode>S</transactionCode>
          <equitySwapInvolved>0</equitySwapInvolved>
      </transactionCoding>
      <transactionTimeliness>
      <value />
      </transactionTimeliness>
      <transactionAmounts>
          <transactionShares>
              <value>12100</value>
          </transactionShares>
          <transactionValue>
              <value>31.6941</value>
          </transactionValue>
          <transactionAcquiredDisposedCode>
              <value>D</value>
          </transactionAcquiredDisposedCode>
      </transactionAmounts>
      <postTransactionAmounts>
          <sharesOwnedFollowingTransaction>
              <value>79100</value>
              <footnoteId id="F1" />
          </sharesOwnedFollowingTransaction>
      </postTransactionAmounts>
      <ownershipNature>
          <directOrIndirectOwnership>
              <value>D</value>
          </directOrIndirectOwnership>
      </ownershipNature>
   </nonDerivativeSecurity>
<footnotes>
   <footnote id="F1">Represents 33,660 unrestricted stock and 45,440 restricted shares vesting on 7/1/04.  </footnote>
</footnotes>
    <ownerSignature>
       <signatureName>Joseph A.  Marengi</signatureName>
       <signatureDate>2003-07-02</signatureDate>
    </ownerSignature>
    <ownerSignature>
       <signatureName>Thomas H. Welch, Jr.,  Attorne</signatureName>
       <signatureDate>2003-07-02</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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