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 […]