以下節自MSDN http://msdn.microsoft.com/en-us/library/aa366778%28VS.85%29.aspx
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 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 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 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 |
|
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 |
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