Fan Questions

Discussion in 'MacBook Pro' started by VinnyV, Sep 21, 2012.

  1. VinnyV macrumors member

    Aug 10, 2011
    Hey all, have a retina mbp and loving it so far, absolutely no issues whatsoever. running 10.8.2 and ahve a few questions about my fan.

    When i game for a while the temperature of the gpu diode shoots up to 81, and my fans are still running 2000-2160 or so, just checking is this normal? My fans just seems to be running at 2000-2150 its always stuck around those areas. Just want to check before i burn something:D thanks
  2. GGJstudios macrumors Westmere


    May 16, 2008
    Yes, it's normal. Your fans won't always spin faster as soon as temps spike. They may wait until temps are sustained at a high level for a few minutes. The Intel processors used in Macs are designed to automatically shut down to prevent damage if they truly overheat. CPU Tjmax = 105C (221F), GPU Tjmax = 100C (212F) on i3, i5, i7 processors. (Source: Intel)

    If you're not already using it, iStat Pro (free) or iStat Menus ($16) will give you accurate readings of your temps and fan speeds, among other things.

    Unless there is a rare defect in a Mac, most temps are well within the normal operating range, considering the workload being put on it. Websites with Flash content, games and other multimedia apps will put higher demand on the CPU/GPU, generating more heat. This is normal. If you're constantly putting high demands on your system, such as gaming or other multimedia tasks, expect temps to rise and fans to spin up accordingly. It's just your Mac doing its job to maintain temps within the normal range.

    It is also quite normal for your Mac to become extremely hot to the touch during intensive operations. The aluminum body transfers heat more effectively than other materials used in computer casings, so you will feel the heat more. This doesn't indicate that it's overheating and will not harm the computer to be hot to the touch.

    Your fans are always on when your Mac is on, spinning at a minimum of 2000 rpm (for MBPs) or 1800 rpm (for MBAs, MBs and minis). iMacs have 3 fans with minimum speeds in the 800-1200 range. They will spin faster as needed to keep temps at a safe level.

    If your fans are spinning up without increased heat, try resetting the SMC.
    (PRAM/NVRAM has nothing to do with these issues, so resetting it will not help.)

    The intake and exhaust vents are in the back of the computer near the hinge on all Mac notebooks (except the new MBP with retina display, which has intake vents along the sides at the bottom). The iMac vent is a slot on the back near the top of the computer. Make sure the vents remain unblocked to allow your computer to perform at its best.

    Learn about the fans in your Mac
    Apple Portables: Operating temperature

    For Flash-related issues:
  3. eagandale4114 macrumors 65816


    May 20, 2011
    You are fine. Intel has an auto shutdown inbuilt into the chip if the temp gets too high.
  4. VinnyV thread starter macrumors member

    Aug 10, 2011
    Awesome, thanks! can game peacefully now :D very informative info GGJstudios!

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