2009 Mac Mini CPU heat question

Discussion in 'Mac mini' started by tangelo, Apr 8, 2009.

  1. tangelo macrumors newbie

    Joined:
    Apr 8, 2009
    #1
    Hello there, first post so please be gentle. :)

    I only have previous experience on PPC type macintosh so these "new" Intel ones are completely new to me.

    The question is, is it normal for the 2.0GHz Core2Duo to run at 96 degrees Celcius on full usage? When I use the mini for normal stuff like surfing the web, e-mail or listening to some music, the CPU heat is at 55-70 degrees, but when doing something really demanding like compressing x264 the heat goes up to 80-96C

    I know that people @ apple have taken this into consideration, but it's still a little bit alarming to have the temps at 96C when Intel only gives the processor operating temperatures till 100C. The mini is located at open, well ventilated area.

    What kind of temps are you getting on full CPU usage with the 2009 mini, and should I be worried about the 96 degree temp?

    Thank you all for any input
     
  2. opeter macrumors 65816

    opeter

    Joined:
    Aug 5, 2007
    Location:
    Slovenia, EU
    #2
    Does the fan spin up, or not?

    Anyway, it should be cooler, since the Mac mini has a much better cooling system, than any of the Macbooks (because of the size of the case).

    So, a Macbook (pro) can simply get high temperatures, but the mini, it should not, or at least not that hot.

    The best cooling is of course in the Mac Pro.
     
  3. FireArse macrumors 6502a

    Joined:
    Oct 29, 2004
    #3
    System temps...

    While that may seem high to you, for the amount of power used compressing the x264 stream, it isn't all that hot.

    The system only has an issue if it shuts itself down. These systems will run very hot. If it does run hot & you find it shutting itself down (unlikely) then leave it to cool, and restart. Look into console logs and run a search for 'shutdown'.

    An integer will be associated as a code. Take this code to AppleCare or A Mac Genius. They'll know what to do then.

    F
     
  4. Wotan31 macrumors 6502

    Joined:
    Jun 5, 2008
    #4
    I run folding@home on my mini 24/7 and it stays at around 80 Celsius. Make sure the intake vents on the underside are not blocked and there is clearance around the mini on all sides for good airflow.

    Install a utility like iStat to monitor temps and fan speeds.

    What is your ambient room temperature?
     
  5. tangelo thread starter macrumors newbie

    Joined:
    Apr 8, 2009
    #5
    This has been taken care of. There is room on all sides of the mini. But to be on the safe side, I'll add small rubberfoots or something to raise the mini a little bit from the desk surface.

    It's about 23-27 C

    I'll install this fancontrol software that should help.

    http://www.lobotomo.com/products/FanControl/
     
  6. bchreng macrumors 65816

    bchreng

    Joined:
    Jul 26, 2005
  7. krogren macrumors member

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    Mar 27, 2009
    #7
  8. tangelo thread starter macrumors newbie

    Joined:
    Apr 8, 2009
    #8
    Just wanted to report that after installing that fan software, the temps have been keeping on 65-75C even on full CPU usage while compressing video.

    I think the problem was that for some reason, the fan didn't raise it's speed enough during high CPU usage. But after tweaking it with Fan Control it's ok now.
     
  9. effee macrumors newbie

    Joined:
    Dec 28, 2009
    #9
    too hot

    96C is too hot for any processor to run at. That's very close to the maximum operating temp specified by the manufacturer. WHile the chip may operate at that temp, its lifespan will certainly be reduced if it is operated there on a continuous basis.
    The mini has "mini"mal cooling for its internal components. I found that removing the internal DVD drive helps a lot with airflow over the cpu. This I discovered somewhat by accident when my drive failed and I decided to simply take it out. You might get further reductions in temp by lapping the mating surface of the cpu and northbridge heatsinks and using a better thermal compound such as IC Diamond or Gelid.
    I replaced the cpu heatsink in my machine with a copper one and, with the DVD drive gone, the cpu temp never goes above 43C/110F when run at full load.
     
  10. MacHamster68 macrumors 68040

    MacHamster68

    Joined:
    Sep 17, 2009
    #10
    96 celsius is hot
    but standing the mini upright will certainly help to drop the temp by at least 10 degree


    here is a list what processors max temp are according manufacturer before you risk a burn out (list contains amd first and amd`s can take lot more heat , thats why they prefered for overclocking, so just scroll down to i for intel)
    http://www.pantherproducts.co.uk/Articles/CPU/CPU%20Temperatures.shtml
     
  11. michaelsviews macrumors 65816

    Joined:
    Sep 25, 2007
    Location:
    Upstate NY
    #11
    So if the temp is too hot and this guy installs some software for the fan control wouldnt you think that Apple is aware of this and made the neccesary changes?

    There's also the company that host's web sites with racks and racks of mac mini's, keeping in mind that there in a AC controlled space, still Macminicolo.net and others.
     
  12. boston04and07 macrumors 65816

    boston04and07

    Joined:
    May 13, 2008
    #12
    I just got a (late) 2009 mini as well, and was also concerned about how hot it ran when doing heavy work (for me, it was some video encoding). I installed SMC Fan Control, set up a new fan speed setting in which I adjusted the fan speed slider to about 50% of its potentially fastest speed, and ran it like that while I was encoding. The CPU temp dropped from about 92 C to 57 C - not bad for a fan speed of only about 3000 RPM. I'll definitely keep this setting on whenever I'm doing any encoding work on the mini. Even at that fan speed, the machine is still surprisingly quiet so it's worth it.
     
  13. partyBoy macrumors 68000

    partyBoy

    Joined:
    Nov 8, 2009
    Location:
    Dilligaf
    #13
    hey do they have this software for desktops ? (imac)


    hey what's the temp a imac (intel) should have,mine is at 57 celcius rightnow..is that good?
     
  14. MacHamster68 macrumors 68040

    MacHamster68

    Joined:
    Sep 17, 2009
    #14
    a hot or overheating processor is not unusual , it can have such simple causes like dried heat compound or to much of it between processor and heatsink or dust can be one too . you would wonder how fast a mini can collect dust have cleaned a mini from a mate couple weeks back when upgrading harddrive and ram ,it was only 7 month old but filled up like dustbag in a hoover
    so setting the fan speed higher will not really solve the problem in these causes
     
  15. Badger^2 macrumors 68000

    Badger^2

    Joined:
    Oct 29, 2009
    Location:
    Sacramento
    #15
    You guys need to stop ripping all the DVDs you get from netflix, redbox and your friends :cool:
     
  16. boston04and07 macrumors 65816

    boston04and07

    Joined:
    May 13, 2008
    #16
    Who said that that's what we're doing? I for one am simply ripping my large DVD collection for use with my Apple TV, and don't like the assumption that I'm stealing when I'm not... :confused: Stealing movies is just one out of several reasons why someone might want to encode a DVD rip.
     
  17. Badger^2 macrumors 68000

    Badger^2

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    Oct 29, 2009
    Location:
    Sacramento
  18. Badger^2 macrumors 68000

    Badger^2

    Joined:
    Oct 29, 2009
    Location:
    Sacramento

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