Anyone know what setting might be causing this (poor GPU performance on battery).

Discussion in 'MacBook Pro' started by EricVT, Apr 6, 2008.

  1. EricVT macrumors member

    Feb 19, 2008
    My MBP runs extremely nicely, but it seems that the GPU runs a lot slower when the notebook is running on battery power instead of being plugged into an outlet. When playing a game on outlet power I can unplug the power cable and see an instant drop in FPS (a significant one, usually down to <10 FPS), but then the problem goes away the second I plug it back into the wall.

    Anyone know what setting I can change to remedy this?
  2. squeeks macrumors 68040


    Jun 19, 2007
    when on battery put the power settings on normal instead of better energy savings?
  3. The Flashing Fi macrumors 6502a

    Sep 23, 2007
    Energy saving. I don't know if you can change it in Mac OS X.
  4. EricVT thread starter macrumors member

    Feb 19, 2008
    I've done that, even tried using "Best Performance" option.

    Seems to not make a difference.
  5. heatmiser macrumors 68020

    Dec 6, 2007
    The processors throttle down on battery power. There's no way to circumvent this on OS X. Think Different™ and keep that laptop plugged in if you want decent framerates. That, or find a copy of the game for XP/Vista.
  6. e12a macrumors 68000


    Oct 28, 2006
    this is not isolated to Mac. Ive used IBMs that do the same thing.
  7. taylorwilsdon macrumors 68000


    Nov 16, 2006
    New York City
    Yeah, but you can disable it in the bios.

    I don't play games on the computer, so it doesn't bug me that much, but I hate it when the dock gets all choppy on battery power even if its set to best performance.

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