is it normal GPU temperature 90+ C

Discussion in 'MacBook Pro' started by mende11eev, Oct 12, 2015.

  1. mende11eev macrumors newbie


    Oct 12, 2015
    Hello. i have a MacBook Pro (Retina, 15-inch, Late 2013) EL capitan OS
    2,3 GHz Intel Core i7
    16 GB ram
    NVIDIA GeForce GT 750M 2048mb
    I have connected another monitor via hdmi of macbook (NEC multisync EA 294WMi (21:9)) - resolution is 2560x1080 px
    And temperature of GPU (NVIDIA GeForce GT 750M 2048mb) become 85C , if i start work with browser (surfing+youtube) temperature became 95-98C
    If i disconnect second monitor the temperature (become 65C)
    my coolers are operating at full capacity, but temperature doesn't go down.
    But if i change the resolution (with the help of program "Display maestro") to 2048x864 than temperature of GPU go down dramatically to 65 C
    But i want to work with the best resolution of this monitor. What can i do to decrease the temperature of GPU.

    Sorry for my English. It is poor ))))
  2. snaky69 macrumors 603

    Mar 14, 2008
    There isn't much you can do, really. That temperature is a bit on the high side for just browsing youtube, are you running anything else that may be taxing the GPU? Anything using CUDA, for example?
  3. mende11eev thread starter macrumors newbie


    Oct 12, 2015
    there is one browser with 8-10 tabs and other programs, without youtube temperature is 82-88 C,
    with youtube temperature become 88-95 C. There are another programs but they don,t use GPU (i think) ))
  4. Queen6, Oct 12, 2015
    Last edited: Oct 12, 2015

    Queen6 macrumors 604


    Dec 11, 2008
    Flying over the rainforest at dawn - Priceless
    Being an owner & user of the 15" MacBook Pro forever; Over the years the 15" has frequently struggled with it`s thermals, especially when an external display is connected as the dGPU switches on as default, internal temperatures soar, equally there are some steps that can be taken to reduce the systems temperature;
    • Elevate the rear, aluminium passive coolers generally work best (I use RainDesign`s mStand & iLap)
    • Increase base fan RPM to 3K or as much as you are comfortable with (MacsFanControl or SMC Fan Control)
    • Limit the dGPU`s usage with gfxCardStatus
    • Swap out Chrome for Chrome Canary as it`s way more optimised for OS X and will extend battery run time, reduce thermals
    • Swap out VLC for Movist as again it`s a reduced load on CPU/GPU
    • Uninstall or block Flash
    • Install an ad blocker Ublock extension works well
    • Powered coolers are very much a "mixed bag" when it comes to Mac portables, you need one that has a high capacity (100 CFM minimum) and preferably a large single fan, this can help to keep the 15" internal fans below 4K which for many is good enough as often it`s this point and beyond where the fans become intrusive. Don't expect a powered cooler impact internal temperatures, beyond a couple of degrees
    • Older machines can benefit from cleaning of the cooling system
    • Replacing the thermal paste has been hit & miss, some with very positive results, some with no improvement over stock. Personally I would only do this on a Mac Portable that was either very old, or one that I can confirm was definitely running hotter than stock.
    • If your MBP has a discrete GPU, it will fire up when an external display is connected as default, temperatures will rise rapidly.
    • Consider a specific vertical stand when using a MPB in "Clamshell" mode allowing for greater circulation of air. Some recommend inverting the MBP in the stand with the exhaust at the top & intake at the bottom (Retina`s)
    The key to a quiet life with a 15" MacBook Pro is several incremental changes that do add up to reduce thermals. From my experience over the years if your going to push a 15" hard the fans are going to max out fast, with associated noise. If your using it with a moderate load life can be made quieter :) For the most part your MBP runs hot as that`s how Apple designed it, the trade off for form over, function, thin & light...

    The old adage still applies; it`s easier to keep a system cool, than cool-down an already overly hot machine. This being said it`s not strictly necessary, equally it`s nice to know that there are options for reducing temperature out there.


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3 October 12, 2015