Maximum Number of Virtual Processor Based on Guest Operating System Running on Windows Server 2012 Hyper-V

 

Here is the updated virtual processor that you can assigned based on guest operating system on Windows Server 2012 Hyper-V:

Server Platform

Guest Operating System	Max number of Processor
Windows Server 2012	64
Windows Server 2008 R2 with SP1 / without SP1	64
Windows Server 2008 with SP2	8
Windows Server 2003 R2 with SP2	2
Windows Server 2003 R2 with SP2	2

Client Platform

Guest Operating System	Max number of Processor
Windows 8	32
Windows 7 with/without SP1	4
Windows Vista with SP2	2
Windows XP with SP3/SP2	2

Linux Platform

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Relevant post:

• http://technet.microsoft.com/library/hh831531