How hot until fan kicks in?

Discussion in 'MacBook Pro' started by MBX, Apr 23, 2017.

  1. MBX macrumors 65816

    Joined:
    Sep 14, 2006
    #1
    Hi there

    I did some video/ after effects stuff on my nTB MBP 13'' and the cpu went nearly 100 celsius and the fan still didn't kick in. The chassis & keyboard were really hot.

    Had to use the app TG Pro to manually start the fans to cool it down.

    How hot does it have to get until the fan kicks in?
     
  2. ryguy92000 macrumors regular

    ryguy92000

    Joined:
    Sep 20, 2014
    Location:
    Salt Lake City, UT
    #2
    100c is hot but not that bad. i would get worried around 150c. Make sure the machine is sitting on a flat smooth surface of course. The aluminum will act as a heat sync so it will get hot. Doesn't hurt to use Mac Fan Control to set a minimum, i use it on my 2011 15" mbp to keep the GPU in one piece
     
  3. Toutou macrumors 6502a

    Toutou

    Joined:
    Jan 6, 2015
    Location:
    Prague, Czech Republic
    #3
    What the.. ?
    100 °C is the T[junction] temperature of the i5-6360U CPU!
    Literally, one degree more and you're out of the Intel approved safe zone.

    The fan should be running at max RPM if the CPU sits anywhere near T[junction].
     
  4. jerryk macrumors 68030

    Joined:
    Nov 3, 2011
    Location:
    SF Bay Area
    #4
    The fan should be running most of the time, just a slow until max cooling is needed.
     

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