Microsoft KB Archive/197513

= Windows NT Memory Limitations =

Article ID: 197513

Article Last Modified on 10/31/2006

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APPLIES TO


 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Server 4.0 Standard Edition
 * Microsoft Windows NT Server 4.0 Enterprise Edition

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This article was previously published under Q197513



SUMMARY
Windows NT is limited to four gigabytes (GB) of random access memory (RAM).



MORE INFORMATION
Normally, each program is allocated two GB of RAM by the Windows NT kernel when the program is loaded. Windows NT Server Enterprise Edition makes use of 4 Gigabyte Memory Tuning (4GT). This allows programs to use one more GB of RAM, increasing the memory available to the program to three GB.

For additional information about 4GT, view the following Microsoft Web site:

http://www.microsoft.com/ntserver/NTServerEnterprise/exec/overview/WindowsNTEnterpriseFAQ.asp

Keywords: kbenv kbinfo KB197513

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