Using a fan control can it hurt your MBP?

Discussion in 'MacBook Pro' started by ThomasLentati, Aug 14, 2012.

  1. ThomasLentati macrumors member


    Jun 22, 2012
    United Kingdom/France
    Hey guys i'm using SMC fan control and I was wonderring if I leave my fans on 2000RPM, and whahching a youtube video i go up to 70 degrees but if i put my setting thats 3100rpm its only goes up 50 - 60 degrees, if i leave the low rpm will that make my cpu life not live as long as if i let it run cooler?

  2. Intell macrumors P6


    Jan 24, 2010
    The fans will die long before the CPU or any other logicboard part. Even at the lowest fan speeds that get automatically set and with the CPU always running 100%.
  3. AZREOSpecialist macrumors 68020


    Mar 15, 2009
    Why would you want to alter the fan speed and thermals from where Apple deemed appropriate? Apple is, after all, a multibillion dollar corporation who spends multi millions on product design and research. I think they know what they are doing. Are you as certain that what you are doing isn't going to damage something, regardless of what other people here tell you?
  4. ahdickter macrumors 6502

    Jun 12, 2011
    Pittsburgh, Pennsylvania
    The only reason you should attempt to manage fan speed is if you wish to control noise levels coming from your MBP. Otherwise, let OS X take care of it and don't worry about it :D
  5. Erasmus macrumors 68030


    Jun 22, 2006
    Hiding from Omnius in Australia
    70 degrees is not going to affect your computer in the slightest. It will only hurt if the temperature stays above 100˚C for long periods of time. But considering the computer will auto-shut down or sleep at 100˚C, there is no risk.
  6. dusk007 macrumors 68040


    Dec 5, 2009
    That makes no sense. All fan control apps only raise the minimum speed and never lower the max. You just cannot control noise levels, you can only raise them. All you can control is temps.

    Just because Apple is a mulit billion dollar company means nothing. I am always surprised how gullible some people are. Apple has only interest in the components to last safely through the warranty period (3 years), after that it isn't so bad if a new hardware needs being bought.
    Most chips are spec'd at operation temps to do just that which is last 3-5 years. Intel released slides once about that. Chips deteriorate and since laptop chips are often not 24/7 online but used much less they are trusted to survive real life 3-5 years on much higher temps.

    In most cases other stuff fails before the CPU. Also 70C isn't yet all that bad. If you are like most people and not use a Notebook more than 5 years or not run it at high temps many hours a day it will probably you won't have to worry.
    Some stuff lasts long and some isn't used all that much or hard so you can get much more than 5 years.
    Still it is wrong to say Apple knows best. They have targets in mind. Thin form factor, as little noise as possible, last 3-5 years. "Best" is not as simple as that.
    If one runs high load many hours a day it should go without saying that a desktop PC is better than a notebook.

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