Heat issue

Discussion in 'iMac' started by aslam786, Jan 27, 2012.

  1. aslam786 macrumors newbie

    Jan 24, 2012
    When playing left for dead2/mafia 2 directors cur on my imac ;21.5' - 2.7 ghz iwe noticed the imac get so hot that touching it can be difficult touching it cause the fingers to almost frie!!! But the istat pro shows that the temps are 60-70 celcius, wich are normal temps...?? So is the istat pro showing wrong ? Or its normal for the imac to get that hot?
  2. GGJstudios macrumors Westmere


    May 16, 2008
    Yes, it's quite normal. Your Mac is not overheating. The Intel processors used in Macs are designed to automatically shut down to prevent damage if they truly overheat (around 100C/212F - 105C/221F, depending on your processor). iStat Pro 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.

    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). They will spin faster as needed to keep temps at a safe level. If they're spinning up without increased heat, try resetting the SMC. PRAM/NVRAM has nothing to do with these issues, so resetting it will not help.

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

    For Flash-related issues:
  3. aslam786 thread starter macrumors newbie

    Jan 24, 2012
    My fans are runnin between 999- 1400rpm iwe never touched them.. No fan controll no nothin! It doesent matter how much cellcius the gpu/ cpu goes il never seen those 3 fans go over ca 1400rpm.. And u are telling me 2000???????
  4. GGJstudios macrumors Westmere


    May 16, 2008
    Go back and read my post carefully.
  5. bushman4 macrumors 68020

    Mar 22, 2011
    Its normal. However adding Ram, if you haven't already might help.
  6. MrNomNoms macrumors 65816

    Jan 25, 2011
    Wellington, New Zealand
    The fans really kick in my experience when the CPU gets closer to 85-90degrees celsius. As for the heat - the aluminium is a giant heat sink that disperses the heat in conjunction with the fans.

Share This Page