COOLING DOWN iMAC's

Discussion in 'iMac' started by AFMRPCUSER, Jul 28, 2009.

  1. AFMRPCUSER macrumors member

    AFMRPCUSER

    Joined:
    Oct 25, 2008
    Location:
    N. CA
    #1
    I have one iMAC at home and it runs very hot for a computer. I have discussed this with Apple and they claim that it's designed to operate in this environment. Heat is a terrible enemy to transistor junctions and the less of it the better. So I have a question for those of you who are closely familiar with iMAC's. Is there a means to monitor the temperature inside the cabinet with some software/hardware? I'm curious I have always cooled off my electronics equipment, forced air with high power RF linear tubes in amplifiers I built and conduction heat sink cooling for HP transistor amplifiers and the likes. I have considered utilizing some 40mm muffin 5vdc fans attached to a plenum forcing air from the underside of the iMAC case up through the internal areas and out the top vent. Anybody experimenting with this sorta stuff? My rule has been, "too hot to the touch", to hot period, cool it off. Comments, suggestions welcome and appreciated. OH! at work we use several Pros and an iMAC for video editing and one can almost fry an egg on the top aluminum frame. That just doesn't go well in my book but again; Apple says "No Problem". Truth or Not?:cool:
     
  2. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #2
    to monitor the heat, download iStatPro (it is a widget).

    as for the fact that its too hot, i dont agree. but its your computer so you can do what you want with it :)
     
  3. geoffreak macrumors 68020

    geoffreak

    Joined:
    Feb 8, 2008
    #4
    Don't color your posts like that. It's obnoxious.

    As long as your Mac isn't above 80 degrees C, you are fine.
     
  4. Eidorian macrumors Penryn

    Eidorian

    Joined:
    Mar 23, 2005
    Location:
    Indianapolis
    #5
    Define hot. The entire aluminium body is used for cooling as well.
     
  5. GimmeSlack12 macrumors 603

    GimmeSlack12

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    Apr 29, 2005
    Location:
    San Francisco
    #6
    You Can Trust Apple. Have Fun On Alpha Centauri!
     
  6. Gaelic2 macrumors 6502

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    Aug 17, 2007
    Location:
    Mountains of N. California
    #7
    Thanks for the tip on iStatPro. I downloaded it and it works great!:D
     
  7. MagicBoy macrumors 68040

    MagicBoy

    Joined:
    May 28, 2006
    Location:
    Manchester, UK
    #8
    Another vote for iStat Pro.

    The chips are rated to 80C+ by Intel so heat isn't really an issue. When they get on the toasty side then the fans will ramp up accordingly.

    If you want a wind tunnel on your desk then buy an early Power Mac G5 or an uber gaming PC.

    Also bear in mind Apple will use the chassis as a heatsink. Why stick a whacking great chunk of Aluminium on the chip when there's a case made of it?
     
  8. chrono1081 macrumors 604

    chrono1081

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    #9
    Like others have stated your mac is cooler on the inside then you think. The case is a great heatsink.
     
  9. zmttoxics macrumors 65816

    zmttoxics

    Joined:
    May 20, 2008
    #10
    Holy crap my eyes are bleeding.

    Your iMac is normal according to the trend of the forum.
     
  10. DoFoT9 macrumors P6

    DoFoT9

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    Location:
    Singapore
    #11
    its a great widget! i love it!! an awsome product to use :)

    haha you cracked me up! nice one. but yes, the heat is normal - if not below what i experience on mine!
     
  11. AFMRPCUSER thread starter macrumors member

    AFMRPCUSER

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    Oct 25, 2008
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    N. CA
    #12
    Thank you for the info on the iSatPro. I will look into this. :cool:
     
  12. DoFoT9 macrumors P6

    DoFoT9

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    #13
    thats cool, if you need any other advice/help dont be afraid to ask :)
     
  13. AlexisV macrumors 68000

    AlexisV

    Joined:
    Mar 12, 2007
    Location:
    Manchester, UK
    #14
    Sob.

    Your iMac is fine. It will get very hot in the top left, but it's designed to be. Heat is better out than in.

    Your rule is bunkum. Don't tell me you only drive you car if you've put a bag of dry ice on the engine block?
     
  14. AppleMatt macrumors 68000

    AppleMatt

    Joined:
    Mar 17, 2003
    Location:
    UK
    #15
    The hotter the case is, the more heat is being pulled out of the enclosure. Aluminium is a relatively good conductor so you may perceive it as getting hotter. Don't worry about it. Worry about plastic laptops.

    I certainly wouldn't force air through something I couldn't see into.

    AppleMatt
     
  15. mazza macrumors newbie

    Joined:
    Feb 23, 2008
    #16
    What about the hard drive ? Mine is around 55-60C and that can't be good. The fan never ramps up, even when the temps do



     
  16. DoFoT9 macrumors P6

    DoFoT9

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    #17
    ehh thats an ok temperature. i wouldnt worry too much
     
  17. Eidorian macrumors Penryn

    Eidorian

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    Indianapolis
    #18
    Going over 120 F for a hard drive isn't very desirable.
     
  18. J the Ninja macrumors 68000

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    Jul 14, 2008
    #19
    For a laptop CPU, it's fine. For an HDD, no it's not fine.
     
  19. DoFoT9 macrumors P6

    DoFoT9

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    Location:
    Singapore
    #20
    i know that! but there isnt much you can do about it so unles you wanna blast ur fans all the time. i havent had any problems with my HD after 2 years of having it..
     
  20. ryan.hayes79 macrumors member

    Joined:
    Jun 27, 2008
    #21
    You can get SMC fan control if you want to increase the lowest point of the fans that are in the machine.

    http://www.eidac.de/?p=134

    I have used it for years to increase the fans to just 100 - 200 rpm above the standard settings. Also good to ramp them up once in a while to clear the dust! Pretty much the only time I have ever heard them on full blast!

    Hope this helps.
     
  21. matteusclement macrumors 65816

    matteusclement

    Joined:
    Jan 26, 2008
    Location:
    victoria
    #22
    I agree that apple knows what they are doing, BUT I have a 4inch fan behind my mac that runs when I am doing video editting. It drops the temp and extra 5-10 degrees celcius, depending if I am crunching lots of video. And while iMacs can run hot, I have noticed a slight performance bump from having the small fan on it.
     
  22. Cabgh5950 macrumors newbie

    Cabgh5950

    Joined:
    Mar 26, 2010
    Location:
    Sydney, New South Wales Australia
    #23
    Oops!

    It's funny you should mention that because when I was uploading a iMovie to Youtube via iMovie 09 it go to 98!:eek:
    So I put my desk fan pointing toward my Mac and the temp went down to about 70.
    When it normally gets that hot i just cut the power!
    But smcFanControl is keeping things under control.
    Before I had just regular fan control.
    Don't get that app.
    It spins the fans very quickly makes it so loud!
     
  23. Cabgh5950 macrumors newbie

    Cabgh5950

    Joined:
    Mar 26, 2010
    Location:
    Sydney, New South Wales Australia
    #24
    Power supply

    Just wondering what temperature the Power Supply should be at.
    Right now the meters claim it's at 80.
     
  24. spinnerlys Guest

    spinnerlys

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    Sep 7, 2008
    Location:
    forlod bygningen
    #25
    You can use FanControl quite easy if you set it properly and it does not spin up that fast. But as it has been made for the Apple notebook line you might get some "troubling" results with an iMac.

    [​IMG]
     

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