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Windows memory limitations

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Have you ever wondered what the max physical limitations are for memory in our Windows products?  Want to know if its changing in Vista?  Look no more!

Physical memory limits

32-bit Windows

64-bit Windows

Windows XP Starter Edition

128 MB

N/A

Windows XP

4 GB

128 GB

Windows Server 2003, Web Edition

2 GB

N/A

Windows Storage Server 2003

4 GB

N/A

Windows Storage Server 2003, Enterprise Edition

8 GB

N/A

Windows Server 2003, Standard Edition

4 GB

16 GB

Windows Server 2003, Standard Edition SP1

4 GB

32 GB

Windows Server 2003, Enterprise Edition

32 GB (16 GB with 4GT RAM Tuning)

64 GB

Windows Server 2003, Enterprise Edition SP1

64 GB (16 GB with 4GT RAM Tuning)

1 TB

Windows Server 2003, Datacenter Edition

128 GB (16 GB with 4GT RAM Tuning)

512 GB

Windows Server 2003, Datacenter Edition SP1

128 GB (16 GB with 4GT RAM Tuning)

1 TB

Windows Vista

4 GB

128 GB

Windows Server "Longhorn"

4 GB

32 GB

Windows Server "Longhorn", Enterprise Edition

64 GB

1 TB

Windows Server "Longhorn", Datacenter Edition

128 GB (64 GB with 4GT RAM Tuning)

1 TB

Jaisson Mailloux

National SB Technology Specialist

US SB Technology Team (aka BOB)

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