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Does windows XP 64 support quad procs?


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Windows XP x64 is limited to two processors, but it counts by socket, not by core. Therefore, two dual-core processors would show up and work properly as 4 processors in Windows XP x64. However, if you install XP x64 on a machine with 4 (or more) physical processors, you'll onlly see and be able to use two.

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if i only had sutch a system LOL

but in the end it only would have about dubled the price for buying it...

i found that my computer (to have the exact same specs ans my current machine but with 2 instead of 1 cpu would have cost me over 400 euro extra... (E500- x 1.25 = $625 usd)

so i as, why the hell would have such money but is unwilling to spend the extra $$ on software... as even the a low-budget quad-core machine (4x 1.8ghz) is way beyond any requirements for a home office pc...

unless you want to build yourself a realtime airplain sim in your hobby-room...

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Same as with 32bit - XP is limited to 2 processors for licensing reasons, not technical (same as the 10 inbound connection limit). However, processors are licensed per socket, not per core. Therefore, dual proc dual core will indeed yield 4 processors in Windows XP, x64 or x86.

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  • 1 month later...

Windows Server 2003 x64 - Processor Support

Supports up to 4 (x64 architecture-based computer with Intel Pentium or Xeon family with Intel Extended Memory 64 Technology, or AMD Opteron family, AMD Athlon 64 family)

Windows Server 2003 Enterprise x64 Edition - Processor Support

Supports up to 8 (x64 architecture-based computer with Intel 64-bit Xeon, 64-bit Pentium, AMD Opteron, AMD Athlon 64, or compatible processor)

Windows Server 2003 Datacenter x64 Edition - Processor Support

Support up 64(x64 architecture-based computer with Intel Pentium or Xeon family with Intel Extended Memory 64 Technology, or AMD Opteron family, AMD Athlon 64 family, or compatible processor)

x32 Editions listed below.

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heres the support,

Xp home - 1 physical 2 virtual

Xp pro (and 64 bit) - 2 physical 4 virutal

2000 pro - 2 physical or 2 virtual

2000 server standard - 2 physical or 2 virtual

2000 server advanced - 16 physical or 16 virtual

2003 server standard / small business - 2 physical or 4 virtual

2003 server enterprise - 64 physical or 128 virtual

a virtual cpu would be from hyperthreading, not dual cores.

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  • 3 months later...
heres the support,

Xp home - 1 physical 2 virtual

Xp pro (and 64 bit) - 2 physical 4 virutal

2000 pro - 2 physical or 2 virtual

2000 server standard - 2 physical or 2 virtual

2000 server advanced - 16 physical or 16 virtual

2003 server standard / small business - 2 physical or 4 virtual

2003 server enterprise - 64 physical or 128 virtual

a virtual cpu would be from hyperthreading, not dual cores.

2003 Datacenter Edition supports 168 Physical Processors and I think 672 Virtual Processors. It's only limited to that because of Hardware addressing!

This would be a VERY quick machine (Expensive as well!)

Edited by Puggsley
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