iMac gets very hot :S

Discussion in 'iMac' started by EarlofCroydon, Jun 25, 2010.

  1. EarlofCroydon macrumors member

    EarlofCroydon

    Joined:
    Jun 4, 2010
    #1
    My 20" iMac is great but recently i installed Handbrake to get some DVD's I own
    onto my computer it seems to get very hot and after installing iStat widget it shows that it's getting up to mid 60's (celsius). Is this normal? It's quite unsettling touching the back to find out it is very hot.... :S :apple:
     
  2. dexthageek macrumors 6502

    Joined:
    Dec 7, 2007
    #3
    Any kind of video encoding/transcoding/decoding is very processor intensive.
    Handbrake uses all the resources it can to get the job done quickly. So high system temp all around is common.
     
  3. TMRaven macrumors 68020

    TMRaven

    Joined:
    Nov 5, 2009
    #4
    60c for what component? If it's just the cpu, well that's to be expected. Handbrake should max the cpu out, and cpus have very high operating temperatures, normally they can handle up to 90c without being in risk of damage.

    As for your case getting hot, if it's an aluminum case, then that's to be expected :)
     
  4. EarlofCroydon thread starter macrumors member

    EarlofCroydon

    Joined:
    Jun 4, 2010
    #5
    Okay cool. But no it's the previous plastic (I think) case from the previous iMac models.
     
  5. bearcatrp macrumors 68000

    Joined:
    Sep 24, 2008
    Location:
    Boon Docks USA
    #6
    You should be running smcfancontrol when your ripping movies. Crank up the fans until your finished.
     
  6. peakchua macrumors regular

    Joined:
    Apr 12, 2010
    #7
    24 inch imac vs 27 inch imac

    my macbok pro, in which i ran iantivirus "(very processor intensive) and cinebench, ran up to 93 degrees celcius and finally, the mac took control of the cooling problems. for the imac 20 inch, it doesent go so high, maximum 45 celcius. as for the 24 inch it should be significantly cooler. but with the new imac 27 inch with that patehticly sized heatsink, is the 24 inch imac better at cooling or the 27 inch? personlly, i want apple to put in another slit line heatsink and another fan ..
     
  7. Ace134blue macrumors 6502a

    Ace134blue

    Joined:
    Sep 17, 2009
    #8
    Welcome to the hot mac club where everyone says that its okay to run it until its almost 100degrees when they dont know a damn thing they are talking about.
    To qoute steve jobs on this
    " If people require 3rd party apps to turn the fans up so their mac doesnt reach thermal shutdown, than they BLEW IT."
     
  8. TMRaven macrumors 68020

    TMRaven

    Joined:
    Nov 5, 2009
    #9
    27 inch-- pathetically sized heat sink? Have you actually seen how big its cpu heatsink is compared to the older iMacs?

    http://s1.guide-images.ifixit.net/igi/eFcGG3VaANuJhLIM.huge
    http://s1.guide-images.ifixit.net/igi/ktLKDUFPyGmyPPQJ.huge


    I think only some of the new macbook pros get up to 100c sometimes in their cpus, and yeah that could potentially be dangerous. I've personally have never seen temperatures over 70c for the iMac's cpu, though. My old G5 iMac's cpu was ALWAYS at a constant 74c for the 6 years that I had it, and it still runs like a charm, cpus can take high temperatures. HDDs however, are the only internal component you should really worry about for temps.
     
  9. EarlofCroydon thread starter macrumors member

    EarlofCroydon

    Joined:
    Jun 4, 2010
    #10
    Yeah my iMac 20" as we speak through using Handbrake is hitting the following temperatures. (Celsius)

    HD Mac OSX: 52
    CPU A: 60
    CPU A: 67
    GPU: 64
    GPU Diode: 69
    GPU Heatsink: 67
    Ambient: 28

    Any issues:???
     
  10. spinnerlys Guest

    spinnerlys

    Joined:
    Sep 7, 2008
    Location:
    forlod bygningen
    #11
    Those are normal temperatures. If you see constant temperatures above 90-100°C, you can worry a bit more, but the CPU is able to handle 105/120°C.
     
  11. TMRaven macrumors 68020

    TMRaven

    Joined:
    Nov 5, 2009
    #12
    Most har drives are rated for operating temps up to 60c. I personally would watch then and make sure they don't go above 55c. Sold State Drives are rated for operating temps up to 70c.
     
  12. Ace134blue macrumors 6502a

    Ace134blue

    Joined:
    Sep 17, 2009
    #13
    Yeah i know, 90-100 is okay every now and then but if it sustains 90+ for a long time the cpu will lose its life very fast(prolly around a year or two). At constant 100+ i dont see it lasting more than 6months to a year. If only apple did proper tim applying everything would be a lot cooler.
     
  13. Ace134blue macrumors 6502a

    Ace134blue

    Joined:
    Sep 17, 2009
    #14
    Oh and also, if you have a new imac with the i7 860 in it, the t-max is 77c i think. It WILL crap out past 90degrees or it will just throttle till everything comes to a slow stop
     

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