Memory Limits for Windows Releases

Saturday, December 10, 2011

When I need to reference the physical memory limits for Windows Operating Systems, I seem to waste time trying to locate my notes or searching the Internet.  I am posting here so I can remember.  Found the information on Microsoft’s site and will use it for future reference.

Below are the Operating Systems and Editions I reference most frequently.

Windows Server 2008 R2

The following table specifies the limits on physical memory for Windows Server 2008 R2. Windows Server 2008 R2 is available only in 64-bit editions.

Version

Limit on X64

Windows Server 2008 R2 Datacenter

2 TB

Windows Server 2008 R2 Enterprise

2 TB

Windows Server 2008 R2 Foundation

8 GB

Windows Server 2008 R2 Standard

32 GB

Windows Server 2003 R2

The following table specifies the limits on physical memory for Windows Server 2003 R2. Limits over 4 GB for 32-bit Windows assume that PAE is enabled.

Version

Limit on X86

Limit on X64

Windows Server 2003 R2 Datacenter Edition

64 GB

1 TB

Windows Server 2003 R2 Enterprise Edition

64 GB

1 TB

Windows Server 2003 R2 Standard Edition

4 GB

32 GB


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