Windows 2003 Server Physical Processor and Memory Limits*
Windows 2003 Standard Edition
Windows 2003 Enterprise Edition
Windows 2003 Datacenter
Windows 2003 Web Edition
Windows 2003 Small Business Server
Windows 2003 x64 Standard Edition
Windows 2003 x64 Enterprise Edition
Windows 2003 x64 Datacenter Edition
Maximum # Physical Processors
1-4 CPU
1-8 CPU
8-32 CPU / 8-64 CPU (R2)
1-2 CPU
1-2 CPU
1-2 CPU / 1-4 CPU (R2)
1-4 CPU / 1-8 CPU (R2)
8-32 CPU / 8-64 CPU (R2)
Maximum Memory Capacity
4 GB RAM
32 GB RAM
64 GB RAM / 128 GB (R2)
2 GB RAM
4 GB RAM
32 GB RAM
64 GB RAM / 1TB (R2)
512 GB RAM / 1TB (R2)
* Notes:
Dual core processors (two execution cores in single processor package) only count as one CPU
Data Center Edition Requires Minimum 8 Physical Processors
Standard Edition 32-bit operating systems such may not see full 4GB of memory due to BIOS option ROM
R2 refers to Update Release 2 (see below) scheduled for release in the second quarter of 2006
Windows Server 2003 R2, an update release
of the Windows Server 2003 operating system, makes it easier and more
cost-effective to extend connectivity and control to identities,
locations, data, and applications throughout and beyond your
organization. Built on Windows Server 2003 with Service Pack 1 (SP1),
R2 takes advantage of the stability and increased security of a proven
code base while extending connectivity and control into new areas.
Windows Server R2 requires a new server license and is available for
purchase through the same channels as Windows Server -http://www.microsoft.com/windowsserver2003/R2/R2FAQ.mspx
