Physical Memory Limits: Windows Server 2003 with Service Pack 2 (SP2)The following table specifies the limits on physical memory for Windows Server 2003 with Service Pack 2 (SP2). Limits over 4 GB for 32-bit Windows assume that PAE is enabled.
Version
Limit on X86
Limit on X64
Limit on IA64
Windows Server 2003 with Service Pack 2 (SP2), Datacenter Edition
64 GB
(16 GB with 4GT)
1 TB
2 TB
Windows Server 2003 with Service Pack 2 (SP2), Enterprise Edition
64 GB
(16 GB with 4GT)
1 TB
2 TB
Windows Server 2003 with Service Pack 2 (SP2), Standard Edition