MacBook Pro 15" tb 2.9 ghz temperatures

Discussion in 'MacBook Pro' started by HiMarkus, Feb 21, 2017.

  1. HiMarkus macrumors newbie

    Joined:
    Dec 16, 2016
    #1
    I am wondering if the temperatures of my MacBook Pro are within the normal specs. Under normal workload (browsing, text editing, etc.) iStats shows this values:

    CPU heatsink 50°
    GPU 52°
    GPU diode 56°

    I think the GPU temperature could be a little bit higher, because the MacBook is connected to an LG 5k monitor. But sometimes the value rises up to 63-64 °C, what I find a little strange, since I am not using graphic intensive software (for example games, video editing, …).
     
  2. maflynn Moderator

    maflynn

    Staff Member

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    May 3, 2009
    Location:
    Boston
    #2
    50 degrees is well within normal operating parameters. MBPs tend to run warm but if the temps increase too much the fans spin up
     
  3. HiMarkus thread starter macrumors newbie

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    Dec 16, 2016
    #3
    Yes, 50 degrees are ok. But why the gpu temperature sometimes gets over 60 degrees without graphic contents/applications, only using iTunes, Word, Safari?
     
  4. maflynn Moderator

    maflynn

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    #4
    Because the CPU is working harder and generating heat.
     
  5. HiMarkus thread starter macrumors newbie

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    Dec 16, 2016
    #5
    Ok. So, temperatures over 60° are normal, right?
     
  6. maflynn Moderator

    maflynn

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    #6
    Not when the computer is being used.
     
  7. HiMarkus thread starter macrumors newbie

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    Dec 16, 2016
    #7
    How do you mean this? Should the temperatures of the gpu be higher/lower?
     
  8. maflynn Moderator

    maflynn

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    #8
    It means that as you use the computer, i.e., run programs, the CPU/GPU are working to execute the instructions being sent, that in turn generates heat. Some applications such as encoding 4k video will cause the computer to work hard then say using Safari, so your temps will increase dramatically.

    I think you're reading too much into the temps, the computer does a great job at managing the heat and if it gets too warm, it will throttle and then shut down, plus the fans ramp up to manage the heat.

    Sorry if my earlier post was awkwardly worded to increase your confusion
     
  9. HiMarkus thread starter macrumors newbie

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    Dec 16, 2016
  10. keysofanxiety macrumors 604

    keysofanxiety

    Joined:
    Nov 23, 2011
    #10
    The max temperature of the CPU and GPU clocks around 95/100C. If it reaches near that (within a few degrees), it'll throttle the performance to reduce the temperatures.

    It's not unusual for laptops to get very hot under stress, especially when the dGPU kicks in. If you're not exceeding 85Cs on a daily basis, there's honestly no need for concern with the temperatures.
     
  11. kbk75 macrumors regular

    Joined:
    Feb 3, 2009
    #11
    My 2.9 sits pegged at 95 degrees C when transcoding video files that take a couple hours to do. Doesn't seem to make too much difference, other than turbo speeds dropping from 3.4 to around 3.1 GHz.

    Having said that my CPU tends to run a bit cooler than yours on very light loads. Maybe my ambient temps are lower? Either way, 50 degrees C is nothing to be at all concerned about.
     
  12. ZapNZs macrumors 68020

    ZapNZs

    Joined:
    Jan 23, 2017
    #12
    I've found that external displays can increase the overall running temp (both CPU and GPU sensors) by a noticeable bit on just about every laptop I have owned. As you are using a very high resolution display, I think that would explain it, and it would be pretty easy to test. Compared to previous generation MBPs, 50F is very cool IMO.
     
  13. jerryk macrumors 68030

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    Nov 3, 2011
    Location:
    SF Bay Area
    #13
    GPU can get invoked by the smallest things, like a stupid ad playing on a web page, watching youtube video, etc.
    --- Post Merged, Feb 21, 2017 ---
    Pretty sure all temps are in Centigrade
     
  14. ZapNZs macrumors 68020

    ZapNZs

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    Jan 23, 2017
    #14
    Crap. I meant C but my hands pressed F by habit.
     
  15. jerryk macrumors 68030

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    Nov 3, 2011
    Location:
    SF Bay Area
    #15
    Why, o Why do we keep Fahrenheit and feet. When will the US convert to metric!
     
  16. Samuelsan2001 macrumors 604

    Joined:
    Oct 24, 2013
    #16
    When it drags itself out of the 19th century...
     

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