MBP running very hot.

Discussion in 'MacBook Pro' started by artnotwar, Nov 10, 2011.

  1. artnotwar macrumors member

    Sep 3, 2011
    My GF's MBP (early 2011) has been running VERY hot lately. I know it's not normal because I have the exact same macbook. It's only happening sporadically though.
    Any ideas what it could be? And how do you tell apple you want a new one if it's not running hot when you take it in to the shop?
    And BTW where is the fan outlet? It almost seems like there is no fan in MBP's.

    I hate sporadic problems, I once had a xbox that used to freeze up on me after playing for an hour or two. Sent it back and they said nothing was wrong with it. Obviously they are not going to sit there and play it for hours :mad:
  2. simsaladimbamba

    Nov 28, 2010
    Have a look at Activity Monitor (Applications / Utilities /) and select All Processes and sort by CPU to see what the culprit may be.

    image below uses sorting by CPU as an example
    Further reading:

    The vents are below the black strip used to tilt the display/lid.
  3. takeshi74, Nov 10, 2011
    Last edited: Nov 10, 2011

    takeshi74 macrumors 601

    Feb 9, 2011
    As always with questions like this, you need to look into what's running. It doesn't just run hot for no reason and swapping it out won't solve the problem. In some rare cases it may be hardware but more often than not something's taxing the CPU and causing it to heat up. Pay attention to what's running on her MBP when it heats up.

    As for what is or isn't "normal", again depends on what's running. Merely having the same MBP doesn't really mean anything in this regard. I can take 2 identical MBP's and easily have one heat up while the other does not using entirely different applications/games on the 2 machines.

    The hinge. Where the hot air comes out.
  4. artnotwar, Nov 10, 2011
    Last edited: Nov 10, 2011

    artnotwar thread starter macrumors member

    Sep 3, 2011
    I really don't see how hers could get any hotter than mine, we both use the same programs. Our computers are near identical apart from the files (photos, music and video).
    Simsaladimbamba i followed your advice, and nothing really seems to be really chewing up memory. In saying that I don't really know much about this kind of thing so i'll post a screenshot of it.


    Good one smarty pants, the only reason I asked is because I can never feel or hear hot air coming out anywhere.
  5. simsaladimbamba

    Nov 28, 2010
    Then use iStat Pro to monitor the temperature, and if there is a spike (above 75°C perhaps), look at Activity Monitor again.
  6. heisenberg123 macrumors 603


    Oct 31, 2010
    Hamilton, Ontario
    is she using it on a soft surface like a bed or sofa? thats the only time mine heats up more than normal
  7. artnotwar thread starter macrumors member

    Sep 3, 2011
    Just downloaded iStat pro and the max temp it has been in the last 5 minutes is 67. It is hanging around the mid to high 50's though which is the same as mine. All the other temps are roughly the same as mine but the bottom of the case feels substantially hotter than mine???

    Oh and I forgot to mention that twice in the last week the fan seemed to kick into overdrive. We just turned it off and let it cool down. Never heard the fan run like that before.
  8. GuitarG20, Nov 10, 2011
    Last edited: Nov 11, 2011

    GuitarG20 macrumors 65816


    Jun 3, 2011
    mine idles at ~40C and running light stuff (Chrome, iTunes, Outlook, Sparrow, iCal, Hamachi) it's at 44C...
  9. simsaladimbamba

    Nov 28, 2010
    The fan idles at 2000 RPM, but if needed, it will spin up to 6000 RPM. And you don't need to turn the MBP off in order to let it cool down, at least from a technical perspective. My MBP (17", 2009 model) currently has a CPU temperature of 70° C and it is not hot, not even the bottom.
  10. artnotwar thread starter macrumors member

    Sep 3, 2011
    Yeah see that's what worries me. You say yours isn't hot to the touch on the bottom when the cpu is at 70° C, either is mine.
    Hers is VERY hot to the touch even when the CPU temp is 55-67° C. Hot enough to make me think it can cause damage, and I do know laptops can get pretty hot. Even the bottom 1/4-1/3rd of her screen is hot.
    My screen has a VERY slight warm spot in the middle that is small.
    Something just don't add up.
  11. TheIguana macrumors 6502a


    Sep 26, 2004
    Two things that stand out in your Activity Monitor: Flash and VLC.

    It doesn't take much for Flash to start burning through CPU cycles and producing lots of heat from your Mac. As for VLC depending what your playing it can also be fairly resource heavy.
  12. airlied macrumors 6502


    Jul 8, 2011

    only one way to solve the hot issue

    reapply the thermal paste

    Ive don't it to my mbp (using Arctic silver 5), now the aver temp down by 10C

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