Fan speed over 6000rpm when not using macbook intensively

Discussion in 'MacBook' started by GedBlue, Jul 16, 2009.

  1. GedBlue macrumors member


    May 23, 2009
    Leeds, UK
    Hey everyone, I'm after some advice.

    When I use my mac, at no particular time, the fan speed just shoots up to over 6000rpm (according to iStat pro): and I can hear the difference from the laptop, it's very loud compared to normal fan speeds.

    It lasts about 5 minutes before returning to a normal 1800rpm (ish).

    I took it to a genius to ask them, they ran diagnostics on all the hardware and said there was nothing wrong with it - however there obviously is!

    The screenshot below shows the dashboard displaying fan speed, it also shows that I only had Firefox, iTunes, preview and google desktop open!


    The fan speed is only around 2000 if I have parallels, skype, office, cyberduck, vlc, adium, ichat, evernote open etc!

    Any help/advice would be greatly appreciated, thanks in advance!
  2. Kat King123 macrumors regular

    Kat King123

    Jan 3, 2009
    firefox is using alot of cpu it from facebook when im on it usually using about 50% cpu so if uve been on for a while the fans should spin up remember your macbook only has one tiny fan to cool it you shouldnt be worried at all :)
  3. GedBlue thread starter macrumors member


    May 23, 2009
    Leeds, UK
    It really doesn't seem right that it's due to facebook on firefox. Let me elaborate.

    I've had parallels and lots of other CPU intensive processes going together for hours at a time and never exceeded a fan speed of 3000rpm.

    This sudden increase to 6000rpm (double that maximum with intensive usage) happens at very random times, with barely anything open, possibly after ten minutes of usage, even in a very cool environment.

    There is no correlation between the sudden increase in fan speed for a short time, and the intensity of usage/time using the macbook.

    Does anybody else get anything near 6000rpm? Even a genius said it was very unusually high!

  4. Benny- macrumors regular


    Jul 17, 2009
    My fan speed (white Macbook) also shoots up and becomes loud when I'm on a website containing plug-ins.
    Flash seems to be the worse watching videos on BBC iPlayer or Youtube always increase my fan speed even if Safari is the only program running.

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