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  1. #1


    Member Since
    Nov 08, 2009
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    4
    MBP Fans and Temperature
    I've seen my MBP go up to temperatures of 90C, which I'm guessing will damage the computer? Without programs running it will usually run at around 32C, with programs sometimes around 40C. I use it quite a lot for video editing and encoding, and I see it go up to 60C with large file transfers and 90C for encoding. I'm looking at using SMCFan Control to cool my MBP down. Fans are usually running at 2000rpm, though what is an acceptable temperature?

    I am thinking of running it at 2000rpm for below 50C, and above 50C run at 3000 or 3500rpm, and at 80C or more 4000-5000rpm. I've also heard that running the fan at high speeds reduces its life, so the question is do fans at high speed cause more damage than a really really hot (80C +) CPU? What range of rpm should I use that won't be too damaging to the fans?

  2. #2

    McBie's Avatar
    Member Since
    Apr 26, 2008
    Location
    Belgium
    Posts
    2,732
    Specs:
    2013 MBA 13" - OS X 10.11
    The fans in your MBP are designed by the Apple engineers to start cooling when it is required, depending on the temperature.

    Fiddling around and manually controlling the fans is not advised.

    When your MBP gets too hot, it will shut down automatically to prevent damage.

    Cheers ... McBie
    A computer lets you make more mistakes faster than any invention in human history - with the possible exceptions of handguns and tequila.
    The bitterness of poor quality remains long after the sweetness of low price is forgotten.

  3. #3


    Member Since
    Oct 14, 2009
    Posts
    162
    Specs:
    13" Macbook Pro 2.53GHz; 4GB RAM; GeForce 9400M
    Agreed. I don't know if that will void warranty or not.
    13" Macbook Pro 2.53GHz w/ 4GB RAM

  4. #4


    Member Since
    Nov 08, 2009
    Posts
    4
    Quote Originally Posted by McBie View Post
    The fans in your MBP are designed by the Apple engineers to start cooling when it is required, depending on the temperature.

    Fiddling around and manually controlling the fans is not advised.

    When your MBP gets too hot, it will shut down automatically to prevent damage.

    Cheers ... McBie
    So even if I'm running at 70 - 90C it's fine for the computer? It just sounds really bad considering the 'starting' temperature is 30 - 40C and I've heard 'stories' of keyboards bending from heat etc

  5. #5

    CrimsonRequiem's Avatar
    Member Since
    Jul 24, 2008
    Posts
    6,004
    Specs:
    MBP 2.3 Ghz 4GB RAM 860 GB SSD, iMac 3.4 GHz Intel Core i7 32GB RAM, Fusion Drive 1TB
    It's normal for the computer to get hot when you are doing things like video encoding and opening large files.

    However you shouldn't let the fans run 24/7 at full blast. Just let the computer do what it needs to do.
    死神はリンゴしか食べない。

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