How to remove underclocking on GPU?

Discussion in 'MacBook Pro' started by ChudMaster, Jul 23, 2007.

  1. ChudMaster macrumors newbie

    Jul 23, 2007
    I was looking at and i saw how the 15 inch 256 mbp had less performance than the 17 inch 256 mbp.


    Is there any way to remove the underclocking other than runing xp via bootcamp?
  2. crusher macrumors member

    Jul 18, 2007
    you might wanna get additional cooling before doing that. afaik nvidia drivers support oc.
  3. ChudMaster thread starter macrumors newbie

    Jul 23, 2007
  4. Reaver macrumors 6502

    Aug 23, 2006
    Columbus, Ohio
    is the GPU on the 2.33 MBP's with the x1600 underclocked also if so is there anyway of removing that underclocking.
  5. NickK1066 macrumors regular

    Jul 23, 2007
    I think the original poster means that in the article it's stated that the 15" uses the same hardware as the 17" (except the size of the screen) but the 17" GPU and GPU memory is clocked at a higher speed.
    The cooling is the same on both, so the 15" would just run as hot as the 17" if they were clocked to the same speed.

    It depends on how the GPU speed is controlled. It could be pin setting or signal applied by a support chip to the GPU. Or it could be software based configuration through OSX/EFI.

    If it's the latter there could be a patch (OSX) or a firmware update (EFI) that could do the job.

    In theory the smaller resolution could allow GPU to achieve better performance if clocked at the same speed as the 17".

    Interesting comment about the nVidia drivers. Although there are drivers (almost certainally created by nVidia) they aren't supplied seperately from OSX (ie there's no download from nVidia themselves).
  6. bartelby macrumors Core


    Jun 16, 2004
    At a guess there's more air flow through the 17" casing than the 15" which allows the GPU to run warmer.
  7. BlueArctos macrumors member

    Jun 17, 2007
    Anyone tried ATITool in Bootcamp?

    Don't try this without a good cooling pad at the very least.
  8. tristan macrumors 6502a

    Jul 19, 2003
    high-rise in beautiful bethesda
    Keep your fire extinguisher handy. The MBP CD already gets hotter than a hades bus stop.

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