MacBook Pro Intel Iris Pro GPU PECI temperature o0

Discussion in 'MacBook Pro' started by JEYCDEE, Mar 8, 2017.

  1. JEYCDEE macrumors newbie

    Joined:
    Mar 14, 2014
    #1
    Hi guys. I have MacBook Pro 15" Late 2013 with Intel Iris Pro 5200. When playing games, my GPU PECI and CPU PECI rises up to 100 C, however CPU Cores have pretty decent temperatures, around 72 - 74 C. The strange thing, temperatures does not rise more then 100 C. Now the question is, which sensor should I believe, is 100 C normal temperature and how could it be, that cores have about 25 C less heat?

    Here is screenshot: https://ibb.co/fkGyka
     
  2. leman macrumors 604

    Joined:
    Oct 14, 2008
    #2
    Nothing strange about this — as 105 C is the maximal safe operating temperature for that CPU, it will start throttling/taking breaks so that it doesn't surpass it. Thats why one often observes this "magical" temperature.

    As 100C is safe, its pretty much a normal temperature under load. I can easily imagine that in your case most of the heat is generated by the GPU, so thats why the package temperature is higher than what is reported by the individual cores.
     
  3. Samuelsan2001 macrumors 603

    Joined:
    Oct 24, 2013
    #3
    Because the GPU is a separate part of the chip and when gaming that will be working full tilt but the cpu will not be.
     
  4. JEYCDEE thread starter macrumors newbie

    Joined:
    Mar 14, 2014
    #4
    Thank you for replies, friends. I think I got it. But, do you know any software for Mac, that can under clock the GPU?
     
  5. Samuelsan2001 macrumors 603

    Joined:
    Oct 24, 2013
    #5
    It's not needed the OS will downlclock it to keep it within thermal limits if needed. If you want it to be a bit quieter and cooler when gaming then lower the settings on the game.
     

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