Memory Limits for Windows Releases

This is a quick summary of memory limitations for Microsoft Windows releases that I often have to deal with:

System Edition Memory limit
Windows XP 32-bit 4GB
Windows XP 64-bit 128 GB
Windows Vista 32-bit (≥Home Basic) 4GB
Windows Vista 64-bit (≥Business) 128GB
Windows 7 32-bit (≥Home Basic) 4GB
Windows 7 64-bit (≥Professional) 192GB
Windows 2003 32-bit, Standard Edition 4GB
Windows 2003 32-bit, Enterprise Edition 32GB
Windows 2003 32-bit, Datacenter Edition 128GB
Windows 2003 R2 32-bit, Standard Edition 4GB
Windows 2003 R2 32-bit, Enterprise Edition 64GB
Windows 2003 R2 32-bit, Datacenter Edition 128GB
Windows 2003 64-bit, Standard Edition 16GB
Windows 2003 64-bit, Enterprise Edition 64GB
Windows 2003 64-bit, Datacenter Edition 512GB
Windows 2003 R2 64-bit, Standard Edition 32GB
Windows 2003 R2 64-bit, Enterprise Edition 1TB
Windows 2003 R2 64-bit, Datacenter Edition 1TB
Windows 2008 32-bit, Standard 4GB
Windows 2008 32-bit, Enterprise 64GB
Windows 2008 32-bit, Datacenter 64GB
Windows 2008 64-bit, Standard 32GB
Windows 2008 64-bit, Enterprise 2TB
Windows 2008 64-bit, Datacenter 2TB

For more details, check the Microsoft Web Site.

Bibliography

  • Memory Limits for Windows Releases

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