Firmware that addresses thermal throttling for both Mac OS and Windows

Discussion in 'MacBook Pro' started by hajime, Oct 1, 2018.

  1. hajime macrumors 603

    Joined:
    Jul 23, 2007
    #1
    Hi, I just had a chat with Apple. I mentioned that there were lots of complaints about thermal throttling and Apple only released software fix for Mac OS not Windows. He told me that Apple released a firmware fix on hardware level so that now thermal throttling issues under both Mac OS and Windows are both taken care of. When did it happen? I don't recall readng it.
     
  2. afir93 macrumors 6502a

    afir93

    Joined:
    Jan 5, 2018
    #2
    macOS High Sierra Supplemental Update 1 and 2. The first one came about a week after the release of the 2018 MBPs, the second one at the end of August. I believe the first one didn't address the throttling issues under Windows yet (but under macOS), so the second one most likely did that.
     
  3. mr.anthonyramos macrumors 6502a

    mr.anthonyramos

    Joined:
    Apr 25, 2015
    Location:
    Hong Kong
    #3
    And of course, here is to hoping that additional tweaks were made within the Mojave update. Personally I haven't noticed anything but I am assuming that there should be.
     
  4. iMacDragon macrumors 68000

    iMacDragon

    Joined:
    Oct 18, 2008
    Location:
    UK
    #4
    Supplemental 2 made it behave in windows, though I don't honk there was any official note of his, nor was it widely noticed. But around this time the Mojave betas also included it.
     
  5. Plutonius macrumors 604

    Plutonius

    Joined:
    Feb 22, 2003
    Location:
    New Hampshire, USA
    #5
    I plan on getting a 2018 MBP but I'm waiting till it ships with Mojave. By that time, the should have most of the issues resolved.
     
  6. maflynn Moderator

    maflynn

    Staff Member

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    May 3, 2009
    Location:
    Boston
    #6
    I just booted into windows, and my temps shot straight to 100c, AND the fans were not running. I didn't do much in windows, and the temps barely retreated and hung between high 80s and 90s. I opted to re-boot into macOS since my bootcamp is cooking the internals of my MBP. This is why I opted to use VMware instead of bootcamp. I was waiting to delete the bootcamp partition but I suppose there's little reason to keep it now.
     
  7. fokmik macrumors 68040

    Joined:
    Oct 28, 2016
    Location:
    USA
    #7
    if your temp were around 80-90, still good...but not good if these temp are only on idle and not using the laptop...
    I have around 82C using photoshop even after 30-40 min...still, when i run the app, for around 2-3 min the temp are around at 99C, then the fans running at full speed i think, and after few more minutes the temp is set around 82C and the fans around 3200rpm
     
  8. maflynn Moderator

    maflynn

    Staff Member

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    May 3, 2009
    Location:
    Boston
    #8
    My temps in windows on idle were 87c. I waited a few minutes after reboot to see if the temps retreated. What bothered me the most was that I did not hear my fans spin up in windows. In macOS, that's not an issue, in fact once I rebooted back into macOS the fans ramped up to cool the laptop given the high temps :(
     
  9. iMacDragon macrumors 68000

    iMacDragon

    Joined:
    Oct 18, 2008
    Location:
    UK
    #9
    Oh, yes, if you use macs fancontrol in macos with non automatic settings it seems to completely break fans in windows, I recall noticing. If it's put back on auto, then they work normally in bootcamp.
     
  10. maflynn Moderator

    maflynn

    Staff Member

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    May 3, 2009
    Location:
    Boston
    #10
    Ohhh, I didn't know this. When I get another chance to reboot into windows, I'll test that out. Thanks for the heads up
     
  11. iMacDragon macrumors 68000

    iMacDragon

    Joined:
    Oct 18, 2008
    Location:
    UK
    #11
    Yeah, not quite sure who's bug this should be more counted as.. basically I think the SMC in T2 behaves differently to older ones in more ways than realised.. workaround would probably be for macs fan control to implement a reset to auto on shutdown if they can.
     
  12. maflynn Moderator

    maflynn

    Staff Member

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    May 3, 2009
    Location:
    Boston
    #12
    That did it, I now see my temps in the 50c range doing little work, where as I was hitting 92c in windows :)
     
  13. iMacDragon macrumors 68000

    iMacDragon

    Joined:
    Oct 18, 2008
    Location:
    UK
    #13
    Yeah, that sounds more normal for near idle with dgpu enabled.
     

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12 October 1, 2018