OSX Supports Intel SpeedStep? No controls?

Discussion in 'MacBook' started by mobilehavoc, Oct 27, 2008.

  1. mobilehavoc macrumors 6502


    Jun 30, 2007
    Coming from Windows, one thing I miss is the ability to control or select a power scheme for the CPU when it comes to throttling. i.e. right now I'm sitting on my bed watching MNF and doing some light surfing. I'd prefer if the 2.4ghz C2D in my MB clocked down to 1ghz or so since I'm not doing anything mildly intensive.

    However I've read that Macbooks run at full speed all the time even on battery which is bizarre. Is there anyway to configure it so that it's 100% full speed when plugged in and dynamic cpu speed on battery?!?!

    Seems odd can't do something this simple out of the box.
  2. flopticalcube macrumors G4


    Sep 7, 2006
    In the velcro closure of America's Hat
    Don't think that's right. Pretty sure OSX throttles the CPU as needed. If you look at a program like Coolbook. it adjusts the CPU voltage based on clock frequency so there are speed adjustments being made all the time, plugged in or on battery.
  3. krypticos macrumors regular

    Nov 9, 2007
    im pretty sure that it does it automatically. i know that in windows on my whitebook. windows automatically speedsteps it would go from 2.2ghz to 800mhz. but to confirm that mac does it i dont know.
  4. duffyanneal macrumors 6502a


    Feb 5, 2008
  5. localoid macrumors 68020


    Feb 20, 2007
    America's Third World
    According to a Wikipedia article "Mac OS also has SpeedStep built into the kernel, since the release of the Intel version of Mac OS X 10.4 and is already enabled."

Share This Page