2016 15" fan noise ?

Discussion in 'MacBook Pro' started by GeorgeVes, Nov 22, 2016.

  1. GeorgeVes macrumors member

    GeorgeVes

    Joined:
    Sep 11, 2016
    Location:
    United Kingdom
    #1
    Hey guys can you check on your 15inch 2016 models if you can hear the fans slowly spinning even without the laptop actually doing anything ( on the desktop with no programs open ) ? I can only hear them in a quiet room but I wanna know if it's everybody's 15inch or just mine... I hear the fans from the left side of laptop near the USB-C ports
     
  2. Spoony Bard macrumors regular

    Joined:
    Apr 12, 2007
    #2
    The fans in most computers never turn off completely. This is normal.
     
  3. Gonzaless macrumors member

    Gonzaless

    Joined:
    Nov 15, 2016
    #3
    i see fan is taking off when i do some cpu intense operations : kick some docker instances , installing some software . but so far nothing unusual , stuff i would expect (2 hours of usage). always keep an eye on activity monitor and see what is sucking the cpu energy.
     
  4. reasonrulaz macrumors member

    reasonrulaz

    Joined:
    Sep 29, 2012
    #4
    AFAIK, All of MacBooks fan/fans constantly run at about 2000 rpm... When cpu heat up fan/fans speed increase to 6000-6500 rpm depending cpu load...

    But I'm not hearing anything even totally silent room any of my MacBooks past, recently... Only hearing slightly fan blade hiss when stick my ear to case (at cpu location)
     
  5. GeorgeVes thread starter macrumors member

    GeorgeVes

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    Sep 11, 2016
    Location:
    United Kingdom
    #5
    I can't hear anything from my base 2015 13" Pro though...That's why I am asking.
    And there are no processes doing anything in the background...
    [​IMG]
     
  6. Spoony Bard macrumors regular

    Joined:
    Apr 12, 2007
    #6
    Then I'd be more worried about your 2015. ;)
     
  7. Gonzaless macrumors member

    Gonzaless

    Joined:
    Nov 15, 2016
    #7

    just turned off all the sounds and , click installing .net mono and cinder at the same with 8-10 apps are running (twitter , slack..) . 2 mins installation and couldnt hear. So far in 2 hours of usage i heard only once . i would restart and i am sure nothing important. Sierra is still buggy
     
  8. reasonrulaz, Nov 22, 2016
    Last edited: Nov 22, 2016

    reasonrulaz macrumors member

    reasonrulaz

    Joined:
    Sep 29, 2012
    #8
    Macbook's one of the most important engineering success is cpu fans.. It's running but you can't hear anything without extreme effort (at least for me, and I don't have any hear deficit)

    So, if you can hear fan noise at normal working situations, something's wrong with your new machine.. or your hearing level is above humanity...
     
  9. keysofanxiety macrumors 604

    keysofanxiety

    Joined:
    Nov 23, 2011
    #9
    Always worth trying a PRAM reset. Please could you advise if this makes any difference?
     
  10. deadworlds macrumors 6502a

    deadworlds

    Joined:
    Jun 15, 2007
    Location:
    Citrus Heights,CA
    #10
    I think you mean SMC reset?

    My MacBook randomly started ramping up the fans last night even though the CPU was at 44C and they were reaching 4000RPM. This made them audible and so I checked activity monitor and nothing was using significant CPU resources. I shutdown and performed an SMC reset. Problem fixed, for now at least.
     
  11. GeorgeVes thread starter macrumors member

    GeorgeVes

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    Sep 11, 2016
    Location:
    United Kingdom
    #11
    Yeah, probably will try a SMC reset and call it a day. But its weird cause I can feel the air coming out of the ventilation holes is not hot and activity monitor says the CPU is not under load...
     
  12. keysofanxiety macrumors 604

    keysofanxiety

    Joined:
    Nov 23, 2011
    #12
    Sorry, one too many ales. SMC reset is what I meant :)
     
  13. GeorgeVes thread starter macrumors member

    GeorgeVes

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    Sep 11, 2016
    Location:
    United Kingdom
    #13
    Ok so I tried SMC reset and it didn't change a thing. I installed iStatMenus(https://bjango.com/mac/istatmenus/) to monitor the CPU temps and RPMs of the fans. Can anyone try this with their 2016 15" please ? Fans are spinning at 2000+ rpm when the processor is barely 30 degrees. For reference my old rMBP 13" is hitting 60 degrees before the fans start spinning.
    [​IMG]
     
  14. austinmm6 macrumors newbie

    Joined:
    Jul 18, 2008
    Location:
    New Market, AL
    #14
    The fans are always spinning on all macs, no matter the cpu load. 2000rpm at 30 degrees is perfectly normal.
     
  15. mbpowner macrumors regular

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    Aug 19, 2016
    #15
    This is odd. Did you guys have such issues with the 2015 macbook pros?
     
  16. AlanShutko macrumors 6502a

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    Jun 2, 2008
    #16
  17. mbpowner macrumors regular

    Joined:
    Aug 19, 2016
    #17
    You shouldn't be hearing the fans, however, the fans get crazy loud even if you play simple games
     
  18. GeorgeVes thread starter macrumors member

    GeorgeVes

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    Sep 11, 2016
    Location:
    United Kingdom
    #18
    My 13" rMBP 2015 doesn't spin the fans when doing nothing. A friend of mine has the maxed out 15" from 2015 and his doesn't spin the fans at idle too. Can someone with a 2016 check this and tell me about theirs please? I want to know if it's just mine or it's everybody's rMBP 15" 2016
     
  19. colkilgore macrumors newbie

    Joined:
    Oct 26, 2007
    Location:
    Poland
    #19
    Do the same on the 13" rMBP, and you will see that the fans are in fact spinning at around 2000 rpm. Maybe they are more quiet, but all Mac laptops have their fans spinning even when idle.
     
  20. GeorgeVes thread starter macrumors member

    GeorgeVes

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    Sep 11, 2016
    Location:
    United Kingdom
    #20
    I did do the same procedure on a 13" and 15" 2015 rMBP and both are at 0 rpm in idle. It's the same as in recent nVidia desktop GPUs that don't spin the fans until they reach a certain temperature.
     
  21. dr.z, Nov 23, 2016
    Last edited: Nov 23, 2016

    dr.z macrumors newbie

    Joined:
    Nov 12, 2016
    Location:
    Melbourne, Australia
    #21
    I can confirm the fans on tMBP13 spin down to <1200rpm -- inaudible even if right against my ear. I state this in the context of an initial run-in with a rabid process, which had them running ~3500rpm. Past experience with rMBP15 was that yes, minimum used to be 2000rpm.

    Different fan blades for tMBP15 though.

    EDIT Just tried iStat. Both fans at 0rpm at present.
     
  22. fokmik, Nov 23, 2016
    Last edited: Nov 23, 2016

    fokmik macrumors 68000

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    Oct 28, 2016
    Location:
    USA
    #22
    Wtf?? 0rpm?? So now, with skylake 15W cpu, we get 0 rpm at idle/light usage
     
  23. keviig macrumors 6502

    Joined:
    Jun 7, 2012
    #23
    My 2015 13" reported 0 rpm when at idle. So does the 2016 13" non-Touch Bar. Both showed correct RPM when under load, so the sensors were working.
     
  24. monkeydax macrumors 6502

    Joined:
    Nov 2, 2012
    #24
    Highly doubt there ever is 0rpm fans.
     
  25. keviig macrumors 6502

    Joined:
    Jun 7, 2012
    #25
    Basically all modern graphics cards have fans that stop when the GPU is under 60c. What would stop Apple from doing this with their Macs? The heatsinks are more than enough to keep the CPU's within normal temperature under low load without the fans running.

    Having the fans running at all times even when not needed not only makes for worse battery life, but also generates more heat, noise and wear.
     

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