The following table specifies the limits on physical memory for Windows 7.
Version |
Limit in 32-bit Windows |
Limit in 64-bit Windows |
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 |
2 GB |
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 in 64-bit Windows |
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 |
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