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 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/ |