Temp drop in Yosemite?

Discussion in 'OS X Yosemite (10.10)' started by GhettoMrBob, Jun 17, 2014.

  1. GhettoMrBob macrumors regular

    May 21, 2014
    Anyone else experiencing CPU temperature drops in Yosemite? My 07 MBP (known for being heat monsters) is running, on average, 20-25F cooler than before at idle.

    This is compared to 10.8 & 10.9 clean install, after indexing and all that.
  2. ACDIT macrumors member


    Jun 16, 2014
    11'' MBP here , on mavericks my fans were full speed almost 70% of the time , now i hear them a lot less !
  3. msb3079 macrumors 6502a


    Apr 20, 2010
    collingswood. nj
    Nothing scientific to add, but every so often I will lay back with my MBP Retina in my lap. Always very hot. Ever since Yosemite, it is NOTICEABLY cooler.
  4. Yakibomb macrumors 6502


    May 13, 2014
    Cape Town
    I thought it was just me! Nothing massive but i'm running about 10º cooler now
  5. tf2 macrumors newbie

    Jul 3, 2014
    Exact opposite problem, I find it runs far hotter. I'm thinking of reverting back to 10.9, but it's a hard choice because this is the first os version I've found that will successfully stay connected to my VPN for longer than 50min.
  6. Daiden macrumors 6502a


    Feb 25, 2007
    Chicago, IL
    Not to be nitpicky, but 10 degrees C is 50 degrees F. That's a substantial difference!
  7. artfun macrumors member

    Jun 4, 2014
  8. 556fmjoe macrumors 65816


    Apr 19, 2014
    It doesn't work like that though. 100 C = 212 F, but 90 C = 194 F. A difference of 1 C is equivelant to a difference of about 1.8 F. It's a relative scale.
  9. Shrink macrumors G3


    Feb 26, 2011
    New England, USA
    Ooops...I thought this was another climate change thread!:eek:
  10. Yakibomb macrumors 6502


    May 13, 2014
    Cape Town
    I'm actually so glad I don't have to work in fahrenheit:D


    DP2 is running hotter than DP1 for me. Much hotter! Although this may just be an isolated issue
  11. haravikk macrumors 65816

    May 1, 2005
    Some people are finding that UserEventAgent eats up a lot of CPU time in Yosemite. For any beta release I recommend enabling the CPU indicator in Activity Monitor, and if you notice any high usage then you can take a look in Activity Monitor to see if there's a culprit that's eating up CPU and getting stuck (i.e - an infinite loop); if you do, then profile it and send the report to bugreport.apple.com then use Activity Monitor to quit or force quit the process (anything system related should just start up again as required anyway, and hopefully behave itself).

    While it's great that Yosemite may have further power/heat improvements, it's hard to put stock in it just yet; especially when Apple hasn't mentioned anything (you'd think they would have done). But any worse battery life is likely the result of a bug, so get it tracked down so it can be fixed ;)
  12. Cythth macrumors regular


    Feb 24, 2013
    Lake Jackson, TX
    Nope... we're using real temperatures here. :p

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