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

    Joined:
    Feb 19, 2008
    #1
    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

    squeeks

    Joined:
    Jun 19, 2007
    Location:
    Florida
    #2
    when on battery put the power settings on normal instead of better energy savings?
     
  3. The Flashing Fi macrumors 6502a

    Joined:
    Sep 23, 2007
    #3
    Energy saving. I don't know if you can change it in Mac OS X.
     
  4. EricVT thread starter macrumors member

    Joined:
    Feb 19, 2008
    #4
    I've done that, even tried using "Best Performance" option.

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

    Joined:
    Dec 6, 2007
    #5
    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

    e12a

    Joined:
    Oct 28, 2006
    #6
    this is not isolated to Mac. Ive used IBMs that do the same thing.
     
  7. taylorwilsdon macrumors 68000

    taylorwilsdon

    Joined:
    Nov 16, 2006
    Location:
    Bay Area
    #7
    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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