2013 MBA Fan goes full speed for no appearent reason

Discussion in 'MacBook Air' started by mert0, Jul 5, 2013.

  1. mert0 macrumors newbie


    Jul 5, 2013
    Summary:When I'm doing some simple stuff, the fan quickly gets to full speed and my CPU temp gets to over 90°C.

    After some browsing, which didn't heat up my computer, I opened up Chess. My fan quickly got to full speed and my CPU temp got to over 90°C. Is this by any means normal? At the activity monitor I see Chess consuming between %95 and over %100. (It sometimes shows a process using more than %100, like iPhoto %160 or sth when first importing pics)

    Extra infos: i7, 8GB Ram 13" 2013 model Macbook Air with all the updates etc.

    Update: Just now the fan slowed down to normal but activity monitor still shows same level of CPU usage. Basically my CPU randomly heats up without any heavy load and then cools again. Should I be worried?
  2. Intell macrumors P6


    Jan 24, 2010
    That's normal. It isn't overheating, if it was the machine would shut down to prevent damage.
  3. filmbuff macrumors 6502a


    Jan 5, 2011
    If it's using 100% of the CPU that's a heavy load, simple program or not. They will get hot running 100% CPU but it is not overheating unless it shuts itself down.

    As another example, my MBA will get really hot when running the simple "mechanical clock" app. It's just a clock, but it uses a lot of processor power.
  4. hockeyfanatic macrumors member

    Feb 23, 2011
  5. Chatran macrumors member

    Jun 29, 2013
    I think Chess is not that "simple". It requires good amount of calculation like prime number generation.
  6. mert0, Jul 6, 2013
    Last edited: Jul 6, 2013

    mert0 thread starter macrumors newbie


    Jul 5, 2013
    Thank you all for the answers. What concerned me the most was, that it was totally random. Basically chess uses about 100% cpu and then out of nowhere the cpu heats up to over 90 from around 45, stays there for a couple minutes and then it cools down. The thins was, that it stayed at 90, even though the fans were full speed.
    EDIT: It goes randomly up again. I was video-calling on skype, then after a couple of minutes fans go full speed. I check the activity monitor and there is this SystemUIServer working at %102 cpu.
    These heating problems are really spoling my first mac experience:(
  7. ylrd macrumors member


    May 25, 2013
    I'm more surprised by the fact that there are people who play the built-in chess.

    Mine gets a bit warm after some movements but the fans don't kick in. The activity monitor says it's using 90-100% CPU, so I wouldn't be surprised if I had the same issue as you when playing for an extended period of time.

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