Highlighted
Phukon
3 Silver

Memory Limits for Windows Releases

For Enterprises

Physical Memory Limits: 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

Limit on IA64

Windows Server 2008 R2 Datacenter

2 TB

Windows Server 2008 R2 Enterprise

2 TB

Windows Server 2008 R2 for Itanium-Based Systems

2 TB

Windows Server 2008 R2 Foundation

8 GB

Windows Server 2008 R2 Standard

32 GB

Windows HPC Server 2008 R2

128 GB

Windows Web Server 2008 R2

32 GB

Physical Memory Limits: Windows Server 2008

The following table specifies the limits on physical memory for Windows Server 2008. Limits greater than 4 GB for 32-bit Windows assume that PAE is enabled.

Version

Limit on X86

Limit on X64

Limit on IA64

Windows Server 2008 Datacenter

64 GB

1 TB

Windows Server 2008 Enterprise

64 GB

1 TB

Windows Server 2008 HPC Edition

128 GB

Windows Server 2008 Standard

4 GB

32 GB

Windows Server 2008 for Itanium-Based Systems

2 TB

Windows Small Business Server 2008

4 GB

32 GB

Windows Web Server 2008

4 GB

32 GB

Physical Memory Limits: Windows Home Server

Windows Home Server is available only in a 32-bit edition. The physical memory limit is 4 GB.

Physical Memory Limits: 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 (16 GB with 4GT)

1 TB

Windows Server 2003 R2 Enterprise Edition

64 GB (16 GB with 4GT)

1 TB

Windows Server 2003 R2 Standard Edition

4 GB

32 GB

Physical Memory Limits: Windows Server 2003 with Service Pack 2 (SP2)

The following table specifies the limits on physical memory for Windows Server 2003 with Service Pack 2 (SP2). Limits over 4 GB for 32-bit Windows assume that PAE is enabled.

Version

Limit on X86

Limit on X64

Limit on IA64

Windows Server 2003 with Service Pack 2 (SP2), Datacenter Edition

64 GB

(16 GB with 4GT)

1 TB

2 TB

Windows Server 2003 with Service Pack 2 (SP2), Enterprise Edition

64 GB

(16 GB with 4GT)

1 TB

2 TB

Windows Server 2003 with Service Pack 2 (SP2), Standard Edition

4 GB

32 GB

Physical Memory Limits: Windows Server 2003 with Service Pack 1 (SP1)

The following table specifies the limits on physical memory for Windows Server 2003 with Service Pack 1 (SP1). Limits over 4 GB for 32-bit Windows assume that PAE is enabled.

Version

Limit on X86

Limit on X64

Limit on IA64

Windows Server 2003 with Service Pack 1 (SP1), Datacenter Edition

64 GB

(16 GB with 4GT)

X64 1 TB

1 TB

Windows Server 2003 with Service Pack 1 (SP1), Enterprise Edition

64 GB

(16 GB with 4GT)

X64 1 TB

1 TB

Windows Server 2003 with Service Pack 1 (SP1), Standard Edition

4 GB

32 GB

Physical Memory Limits: Windows Server 2003

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

Version

Limit on X86

Limit on IA64

Windows Server 2003, Datacenter Edition

64 GB

(16 GB with 4GT)

512 GB

Windows Server 2003, Enterprise Edition

64 GB

(16 GB with 4GT)

512 GB

Windows Server 2003, Standard Edition

4 GB

Windows Server 2003, Web Edition

2 GB

Windows Small Business Server 2003

4 GB

Windows Compute Cluster Server 2003

32 GB

Windows Storage Server 2003, Enterprise Edition

8 GB

Windows Storage Server 2003

4 GB

Tags (3)
0 Kudos
3 Replies
Phukon
3 Silver

Re: What are the Memory Limits for Windows Releases?

For Clients:

Physical Memory Limits: Windows 7

The following table specifies the limits on physical memory for Windows 7.

Version

Limit on X86

Limit on X64

Windows 7 Ultimate

4 GB

192 GB

Windows 7 Enterprise

4 GB

192 GB

Windows 7 Professional

4 GB

192 GB

Windows 7 Home Premium

4 GB

16 GB

Windows 7 Home Basic

4 GB

8 GB

Windows 7 Starter

2 GB

N/A

Physical Memory Limits: Windows Vista

The following table specifies the limits on physical memory for Windows Vista.

Version

Limit on X86

Limit on X64

Windows Vista Ultimate

4 GB

128 GB

Windows Vista Enterprise

4 GB

128 GB

Windows Vista Business

4 GB

128 GB

Windows Vista Home Premium

4 GB

16 GB

Windows Vista Home Basic

4 GB

8 GB

Windows Vista Starter

1 GB

Physical Memory Limits: Windows XP

The following table specifies the limits on physical memory for Windows XP.

Version

Limit on X86

Limit on X64

Limit on IA64

Windows XP

4 GB

128 GB

128 GB (not supported)

Windows XP Starter Edition

512 MB

N/A

N/A

Physical Memory Limits: Windows Embedded

The following table specifies the limits on physical memory for Windows Embedded.

Version

Limit on X86

Limit on X64

Windows XP Embedded

4 GB

Windows Embedded Standard 2009

4 GB

Windows Embedded Standard 7

4 GB

192 GB

0 Kudos
maze-FJVHo
1 Nickel

Re: What are the Memory Limits for Windows Releases?

What is the purpose of this post, to share the current memory limits with the various Windows versions?  I'm confused as this is posted as a question but seems to be just informational and not in response to any inquiries.  Also, if this information is copied from another site please provide short description and a link to that site in the future.  Thanks!

0 Kudos
Phukon
3 Silver

Re: What are the Memory Limits for Windows Releases?

This is table is for Comparing the OS versions only, thanks for the Correction.

REF: http://blogs.technet.com/b/exchange/archive/2005/07/05/407330.aspx

0 Kudos