MacBook temps starting to freak me out.....

Discussion in 'MacBook' started by maclover001, Mar 2, 2009.

  1. maclover001 macrumors 6502a

    maclover001

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    Mar 25, 2008
    Location:
    Vancouver, Canada
    #1
    For some reason, ever since I decided that I wanted to sell my white MacBook and buy a unibody, the temperatures have been insane, hovering around 87 to 97°C, with the fans screaming, even if there is nothing open. Is this normal?

    I opened up Activity Monitor, and "mount_hfs" and "kernel_task" are the two highest processes. What are these for?

    Thanks
     

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  2. Eidorian macrumors Penryn

    Eidorian

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    Location:
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    #2
    I'd reinstall OS X because it sounds like there's a major problem with the operating system itself. Take it back to Apple if the purchase is fairly recent.

    Don't mess with either of those processes. Shy of 100° C is normal until the fans kick in.
     
  3. Chase R macrumors 65816

    Chase R

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    #3
    Ya that's definitely not normal. For regular web-surfing stuff I usually see between 45-55 degrees.

    Take it back to Apple if you can.

    By the way, how much processing power were those two processes taking up?
     
  4. maclover001 thread starter macrumors 6502a

    maclover001

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    #4
    mount_hfs: 98.6%
    syslogd: 92.3%
    kernel_task: 85.4%

    The rest are <10%
     
  5. Eidorian macrumors Penryn

    Eidorian

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    #5
    Looks like a runaway system log as well. Try killing that.
     
  6. illegallydead macrumors 6502a

    illegallydead

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    #6
    +1. A re-install is generally a good thing to do before you sell, problems or no. And since this is likely a software issue, and not hardware, that should fix your problem.

    If you are getting that close to 100º without doing any sort of MASSIVE load, you are having a problem.

    If what I have heard is correct, at 100º (a.k.a 212º F) the computer will do a core shutdown to keep itself safe. Remember folks, those temperatures are when water boils, certainly not a safe temperature to have CPU's at with most Macs' cooling systems...
     
  7. Eidorian macrumors Penryn

    Eidorian

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    #7
    I've heard 110º C for mobile components and a few GPUs. Yes, there are runaway processes in this case though. :p
     
  8. Name101 macrumors member

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    Oct 19, 2008
    #8
    right now laying in bed just browsing the web I'm at 41C

    there is something wrong.
     
  9. illegallydead macrumors 6502a

    illegallydead

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    #9
    Lol yes well, either way, lets agree that getting into triple digits (Celsius) means you are doing some serious transistor cooking :D
     
  10. illegallydead macrumors 6502a

    illegallydead

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    #10
    Mine (Early '07 MB) averages 61ºC... There are plenty of threads discussing average temperatures, but one way or another, < 75º under light load means nothing to be super worried about.
     
  11. Name101 macrumors member

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    Oct 19, 2008
    #11
    I agree that <75C there is nothing to be worried about.. when i go on Youtube it sits around 65-70C.. but for a computer to be sitting at 93C. doing nothing. I think there is something Wrong..
    When I'm doing Rendering on Blender Using 100% of each core My computer never goes higher than 80C..
     
  12. Name101 macrumors member

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    Oct 19, 2008
    #12
    Sorry for double post!!
    but I know what it is...
    Your Icon is showing TIME MACHINE is running a back up..
    That explains it.


    as you can see mine is not running... It is also telling me I need to do a back up.
     

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  13. Eidorian macrumors Penryn

    Eidorian

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    #13
    mount_hfs isn't backupd.
     
  14. aznguyen316 macrumors 68020

    aznguyen316

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    #14
    thread jack, but nice to know 70C is still fine, I get nervous when my CPU temps reach 70 so I use SMC fan to full blast lol, like when playing Guild Wars via Crossover or whatever..
     
  15. illegallydead macrumors 6502a

    illegallydead

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    #15
    You don't really NEED to do that. It certainly doesn't hurt, but Apple did put plenty of circuitry to control the fans in there to prevent the CPU from becoming too dangerously hot. Unless there is something horribly wrong with your hardware, you shouldn't have to worry about it EVER getting above ~90ºC, as that is getting to dangerous levels...
     
  16. Eidorian macrumors Penryn

    Eidorian

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    #16
    I just let Apple's SMC do what its designed and warrantied to do by Apple. :D
     
  17. aznguyen316 macrumors 68020

    aznguyen316

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    #17
    say what? so does SMC do something with warranty
     
  18. Duch macrumors member

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    Dec 24, 2008
    #18
    I am most definitely new to Mac's, but on your top bar, how do you have your temp displayed?
     
  19. Eidorian macrumors Penryn

    Eidorian

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    #19
    SMCFanControl pops a nice message before you run the program the first time about their liability, etc. I don't think Apple would look do kindly on a logic board repair if you happen to be running it.
     
  20. shady825 macrumors 68000

    shady825

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    #20
    I'd like to have my temp up there also for quick viewing.. How do I do it?
     
  21. Name101 macrumors member

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    #21
  22. maclover001 thread starter macrumors 6502a

    maclover001

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    Location:
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    #22
    I'm using SMCfancontrol.
     
  23. ppc750fx macrumors 65816

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    Aug 20, 2008
    #23
    The maximum operating temp for the C2D chips is 105º C according to Intel. For the Core Duos it's 100º C. I *think* that the board will halt the CPU if it hits 5º C below the max, but I'm not sure about that.
     
  24. fibrizo macrumors 6502

    fibrizo

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    Jan 23, 2009
    #24
    I've noticed that the fan's in the aluminum macbook don't spin up really till about 90C... then hold the temp around 80C (under full stress testing in windows)
     
  25. alphaod macrumors Core

    alphaod

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    NYC
    #25
    To be warrantied by something means to be guaranteed to do something; doesn't have to mean the legal entity.
     

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