iMac's Fan's and Hot

Discussion in 'iMac' started by MartinAppleGuy, Jul 25, 2014.

  1. MartinAppleGuy, Jul 25, 2014
    Last edited: Jul 25, 2014

    MartinAppleGuy macrumors 68020

    MartinAppleGuy

    Joined:
    Sep 27, 2013
    #1
    Was playing X-Plane for a 2 hours there and I noticed the fans were reving up when I paused it. Once I quit it they dropped back to being silent in a few seconds but the back was still a little warm (not burning). I guess this is normal with games, but is it bad for the iMac?
     
  2. Intell macrumors P6

    Intell

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    #2
    That is completely normal and not at all bad for the iMac in any way.
     
  3. MartinAppleGuy thread starter macrumors 68020

    MartinAppleGuy

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    Sep 27, 2013
    #3
    So it really won't lower the lifespan of the Mac? I really want my iMac to be one of those computers that stays with me forever and when it is no longer capable of heavy video editing and I get a new one, I still use this one for basic tasks. And I'm talking about 7-10 years away.
     
  4. Intell macrumors P6

    Intell

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    #4
    It won't impact the iMac's lifespan in any measurable way.
     
  5. ctucci macrumors regular

    Joined:
    Dec 16, 2008
    #5
    I use Macs Fan Control (http://www.crystalidea.com/macs-fan-control) when I stress my iMac. I don't mind fan noise, but I do mind seeing 130-140 (f) degree CPU temps, so I set MFC to keep the temps down.
     
  6. MartinAppleGuy thread starter macrumors 68020

    MartinAppleGuy

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    Sep 27, 2013
    #6
    Thanks, just wanted to know.

    ----------

    Does anyone play games on their 'now several years old iMac' and have any issues with heat or fans?
     
  7. Intell macrumors P6

    Intell

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    #7
    I do, but no problems with either that are outside of its design tolerances.
     
  8. MartinAppleGuy thread starter macrumors 68020

    MartinAppleGuy

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    #8
    How old is it (and how often is it pushed)?
     
  9. Intell macrumors P6

    Intell

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    #9
    It's a 20" 2007 iMac with a 2.8Ghz non-OEM CPU. It gets pushed CPU-wise fairly often, hitting 210F for extended periods of time. It's older ATI 2400 gets pushed with games in Boot Camp and regularly goes over 160F when playing for extended lengths of time. When doing this, its fans will rev a bit more than idle, but quickly drop off again as it cools itself.
     
  10. meteparozzi macrumors newbie

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    Feb 7, 2008
    #10
    210F? Seriously? That's way beyond the thermal limit for most CPUs and HDDs. That's almost 100C. Intel's published specs for CPU limits are in the 60-70 mark.

    I'm surprised your computer is still around to be honest.
     
  11. Intell macrumors P6

    Intell

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    #11
    Most Intell CPUs starting with the Core2Duo models can safely reach 100-105C without a problem and still be within their thermal design limit. Your source link carriers very little creditability as it doesn't cite either CPU OEM. The particular CPU in my iMac, the Intell X7900, has a maximum thermal limit of 100C, source: http://ark.intel.com/products/31730...Processor-X7900-4M-Cache-2_80-GHz-800-MHz-FSB Here's the spec sheet for the Haswell CPU, the Intell 4850HQ, used in the current generation Macbook Pro and its maximum temperature of 100C: http://ark.intel.com/products/76086/Intel-Core-i7-4850HQ-Processor-6M-Cache-up-to-3_50-GHz
     
  12. meteparozzi macrumors newbie

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  13. Serban, Jul 27, 2014
    Last edited: Jul 27, 2014

    Serban Suspended

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    Jan 8, 2013
    #13
    what will happen with haswell i5 if he passed 72C?
     
  14. WilliamG macrumors G3

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    Seattle
    #14
    It will still be a functioning processor.
     
  15. Intell macrumors P6

    Intell

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    #15
    It depends on the CPU. Most of the time it would continue to work without a problem. If the CPU has Turbo Boost, it would start to limit its maximum frequency to reduce the amount of heat that is created.
     

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