Coolbook - control CPU speed on macbook(pro) - safe?

Discussion in 'MacBook Pro' started by irbdavid, Dec 26, 2006.

  1. irbdavid macrumors regular

    irbdavid

    Joined:
    Mar 27, 2006
    #1
    Has anyone ever tried this CoolBook thing? I've been looking for something like this for a while...

    I'm slightly dubious of it, I'd like to hear someone say they've tried it and its safe before I dive in - i'm worried about brick-ifying my macbook.

    Cheers,

    irbdavid
     
  2. macg4 macrumors 6502a

    macg4

    Joined:
    Nov 17, 2003
    Location:
    Des Moines,Iowa
    #2
    yeah i would wait and see if anyone here has used it before . just to be safe
     
  3. Maxwell Smart macrumors 6502a

    Maxwell Smart

    Joined:
    Jan 29, 2006
    #3
    I've never used it but it seems pretty cruddy that they are charging $10 for such a simple app :-/
     
  4. macg4 macrumors 6502a

    macg4

    Joined:
    Nov 17, 2003
    Location:
    Des Moines,Iowa
    #4
    yeah i noticed that as well....
     
  5. aristobrat macrumors G4

    Joined:
    Oct 14, 2005
    #5
    I'm not sure if you were looking for that specific method to make your MB cooler.

    If not, and if you haven't already run across it, there's a nice app that will let you adjust the fan behavior to cool down your MB:
    http://www.macupdate.com/info.php/id/23049
     
  6. Jeef690 macrumors member

    Joined:
    Oct 25, 2006
    #6
    I think the consensus iS that Fan control is superior to SMC
     
  7. Lebannen macrumors newbie

    Joined:
    Mar 31, 2003
    #7
    I registered CoolBook, fully prepared to battle with the author to get my money back if it didn't do what it claimed.

    Fortunately, it seems to :)

    There's two parts to CoolBook:
    1) Changing the speed. I use this when I play Civ IV, as civ IV chews up every free cycle, making my fans noooisy. I limit my CPU to 1002 MHz when playing, and all is good (and still fast!). I suspect what I'm actually doing is CPU-limiting my machine so the GPU doesn't overheat - see below.
    2) Undervolting the CPU. I have a MBP C2D, and the original reason I wanted this app was because I play WoW. Again, my fans were noisy when playing. At my native 2171 MHz, the normal voltage is 1.1375V. After testing, I can safely run at 0.975V. I haven't noticed longer battery life (mostly plugged in), but my CPU temperatures noticably dropped (I forget my tests, but it was at least 5ºC) and fans ramp up a lot less. I'm pretty sure fan ramping is now down to the GPU getting hot, so am waiting for Aticellerator so I can underclock that too :)

    Undervolting the CPU I leave on all the time, as I only see beneficial effects from that. Limiting the CPU speed I use when I get irritated by fan noise :)
     

Share This Page