Windows 7 VM CPU Allocation

Discussion in 'Windows, Linux & Others on the Mac' started by MacFanUK, Nov 5, 2009.

  1. MacFanUK macrumors 6502a

    MacFanUK

    Joined:
    Jul 29, 2009
    Location:
    UK
    #1
    I currently have a hackintosh (Core 2 Quad 2.4GHz) and I am looking at installing Windows 7 on a Parallels VM. How does the CPU allocation work? If I assign 2 cores to Windows 7 (if that's possible), would it be like having a Core 2 Duo in OSX and a Core 2 Duo in Windows?

    Thanks
     
  2. ayeying macrumors 601

    ayeying

    Joined:
    Dec 5, 2007
    Location:
    Yay Area, CA
    #2
    The OSX side will still be Quad. The Windows, if you allocate 2 processors, would look like a Dual core but thats it.
     
  3. MacFanUK thread starter macrumors 6502a

    MacFanUK

    Joined:
    Jul 29, 2009
    Location:
    UK
    #3
    so is it not possible to allocate 2 full CPU cores to windows?

    Thanks
     
  4. ayeying macrumors 601

    ayeying

    Joined:
    Dec 5, 2007
    Location:
    Yay Area, CA
    #4
    It is but it doesnt work in the way you're thinking of. Each core is shared to boost performance. For a quad core, if you have 100% cpu usage for a 1 core virtual machine, it'll be like 25% usage through all 4 cores. for 2 core virtual machine, maxed out cpu, it would be 50% through all 4 cores, etc.
     
  5. MacFanUK thread starter macrumors 6502a

    MacFanUK

    Joined:
    Jul 29, 2009
    Location:
    UK
    #5
    ah right ok, gotcha :) Thanks for clearing that up.
     

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