control maximum fan speed on bootcamp windows xp

Discussion in 'MacBook' started by silverwhalle, Jul 22, 2009.

  1. silverwhalle macrumors newbie

    Joined:
    Mar 31, 2008
    Location:
    seoul
    #1
    all the programs i found were capable only of controlling minimum fan speed.
    but i want to set maximum speed.
    how can i set max speed of fan in windows xp running bootcamp?

    i found some tweak for smcfancontrol to set max speed, but it seemd to be for mac os x.
    model id : macbook 5,2.
     
  2. NewMacbookPlz macrumors 68040

    NewMacbookPlz

    Joined:
    Sep 28, 2008
    #2
    Overall, it's a bad idea to set an artificial maximum fan speed.

    If the computer starts getting too hot, it won't be able to reliably cool itself. This is even worse in Windows, because Windows causes the MacBooks to run a fair bit hotter than in OS X.
     
  3. guydude193 macrumors 6502a

    Joined:
    May 15, 2009
    Location:
    MI
    #3
    Yeah, don't do that. You could hurt your Mac.
     
  4. Jolly Jimmy macrumors 65816

    Jolly Jimmy

    Joined:
    Dec 13, 2007
    #4
    The fan is there for a reason. If it speeds up, it means your CPU is already getting hot. Setting a max speed could send the temperature soaring and fry something.
     
  5. silverwhalle thread starter macrumors newbie

    Joined:
    Mar 31, 2008
    Location:
    seoul
    #5
    hm

    my macbook is not that hot.
    idle : 50C.

    i think 4500rpm would keep the temp of macbook at around 70C.
    and 70C is not that dangerous..is it?

    all my jobs, such as internet search, viewing pdf, listening to music and so on, can be run at idle. but sometimes i want to play games such as wow. that's why i installed windows, even though i compute on ubuntu almost all day.
    mac os : for update on firmware
    windows : for games
    ubuntu : for computing
    hahahah....:p

    when i boot into windows and play wow, fan goes crazy while the temp was not that high, about 60C. so i think 4500 or 5000 rpm would be enough to keep macbook cool.

    you guys don't play games? :D i don't often game, but once a week. and i am afraid of crazy noise of fan. my macbook fan might get broken with full speed. :D.. and my 9400m graphic chip might feel to play games. he was born to run games.. haha.. in my opinion.
     
  6. Jolly Jimmy macrumors 65816

    Jolly Jimmy

    Joined:
    Dec 13, 2007
    #6
    You don't understand, the high fan speed is what is keeping the temperature low.
     
  7. guydude193 macrumors 6502a

    Joined:
    May 15, 2009
    Location:
    MI
    #7
    Wouldn't you rather deal with loud fans than a broken MacBook? I would, but that's just me...:p
     
  8. NewMacbookPlz macrumors 68040

    NewMacbookPlz

    Joined:
    Sep 28, 2008
    #8
    The fans don't even kick up from 2000rpm until you're CPU diode temperature crosses past 67-72C or so. (At least in the OS X environment)

    Dont' muck around with it, it's fine as is.

    You seem not to have a grasp as to how the fans in your computer work. If you turn them down, the GPU and CPU will both heat up far more than they already do. Heat causes failure of these parts, neither of which will be covered by your warranty if/when they find out you limited the maximum fan speed. The fan won't break under full load, at least no sooner than your CPU/GPU may fry without the fan doing it's proper job. I don't see how in any way/shape/form having the fan running will prevent your GPU from performing well; if anything it will perform better with the fan running fast.

    Bottom line: Heat is the biggest internal enemy of your computer system. Externally, liquid spills and drops I'd say.
     
  9. silverwhalle thread starter macrumors newbie

    Joined:
    Mar 31, 2008
    Location:
    seoul
    #9
    ok

    you guys beat me. :D
    thank you all for quick response and interest in my post.
     
  10. jjcol macrumors newbie

    Joined:
    Nov 27, 2009
    #10
    With Vista you need to reduce fan speed

    Despite all the reasons given for not setting a maximum fan speed, it seems to me that running vista with all the latest ms updates, the fan speed is a problem. The fan speed just consistently runs at around 6000 rpm, from the time you boot up until the time you shut it down, even if you are doing nothing on the computer. I've gone through and disabled all background services that seem not to be absolutely necessary, and still the fan on my white 13" macbook is running at 6000 rpm when I am not doing anything (as well as when I am).

    So if anyone knows of a way of setting a maximum fan speed for a mac running vista, I would greatly appreciate it (NB you can't even hear the fan running OSX, but it is kind of deafening as soon as you boot into Vista). If setting a maximum fries my Mac, I'll take responsibility for that. I'd still like to know if there is a way to do it.
     
  11. chscag macrumors 68000

    Joined:
    Feb 17, 2008
    Location:
    Fort Worth, Texas
    #11
    Something is causing your fans to ramp up when you enter Vista. Have you checked the configuration editor in Vista to see what programs and processes are starting when you boot into Vista? From RUN type in "msconfig.exe" and look for the offending programs. I'm running Win 7 Home Premium and the only time my fans are blowing hard is when I'm playing games - which is expected.

    Regards.
     
  12. adder7712 macrumors 68000

    adder7712

    Joined:
    Mar 9, 2009
    Location:
    Canada
    #12
  13. NewMacbookPlz macrumors 68040

    NewMacbookPlz

    Joined:
    Sep 28, 2008
    #13
    Did you make sure to update your BootCamp drivers? I never had a fan speed problem in Windows via BootCamp.
     
  14. jav6454 macrumors P6

    jav6454

    Joined:
    Nov 14, 2007
    Location:
    1 Geostationary Tower Plaza
    #14
    When you enter Boot Camp, your fan speed will be defaulted to the level of rpm you set it up with smcFanControl. If you set it up at highest (6200rpm), then Win7 will boot into that and not go higher. Anything lower (say 2800rpm) will boot into that (2800rpm) and go higher when temps rise.
     

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