Octo-mac with bootcamp - Win 7 > XP sp2?

Discussion in 'Windows, Linux & Others on the Mac' started by glowrider, Mar 5, 2010.

  1. glowrider macrumors regular

    Aug 28, 2003
    I've got a rev A 8-core Mac Pro with 10gb of ram. I'm using it mostly for re-encoding video (bd-rebuilder).

    Will windows 7 be faster/use the cores better than xp sp2? Want to get the most optimized situation possible. It seems like there is a ton of speed being left on the table...

  2. ayeying macrumors 601


    Dec 5, 2007
    Yay Area, CA
    Windows 7 with 64bit will allow the usage of all 10GB ram. XP SP2 will only allow ~3GB of ram due to the 32bit limitation.
  3. balamw Moderator


    Staff Member

    Aug 16, 2005
    New England
    Also, you didn't say which edition of XP or 7 but you need Professional to enable both processors and thus 8 cores. Home will limit you to one processor, 4 cores.

    Doesn't look like bd-rebuilder is built as a 64 bit app, so it may not help that much...

  4. glowrider thread starter macrumors regular

    Aug 28, 2003
    I don't know what version beyond XP SP2.

    Even if BD-rebuilder isn't a 64-bit app, shouldn't it still see a major speed bump if the OS is able to utilize all the cores and ram?
  5. ildondeigiocchi macrumors 6502a


    Dec 30, 2007
    Windows 7 will definitely be faster. I am 99% sure you're running a 32-bit version of Windows XP. Windows 7 is not only more appealing to the eye but in my opinion runs apps much better than XP.
  6. glowrider thread starter macrumors regular

    Aug 28, 2003
    I'm going to look into setting up a partition on my current bootcamp disk to try this out at some point. I dedicated an entire hard drive just to Win XP - hopefully the boot camp assistant will make this simple enough to have both installed side-by-side since you can't upgrade XP to 7 in BC (lame).
  7. Transporteur macrumors 68030

    Nov 30, 2008
    Windows 7 is optimised for multiple processors whereas XP can't really handle more than 2 cores very well.
    So you'd definitely get a speed bump from using 7 (Pro) over XP.

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