Temperatures & Fan Speeds for Late 2009 iMacs (Please Post Yours)

Discussion in 'iMac' started by spcdust, Dec 19, 2009.

  1. spcdust macrumors 6502a

    spcdust

    Joined:
    May 6, 2008
    Location:
    London, UK
    #1
    Could anyone who has a late 2009 iMac post there stats in this thread, purely for comparison and just so we can get an idea of what the average norm is. I'm using Celsius for temps (would be good if we can stick to the same to aid consistency and ease of reference).

    All stats are taken when the computer is not under any load - it's been on for an extended time but generally pretty dormant, apart from a little web browsing.

    Also, please make sure you state your iMac model.

    To monitor temps just download iStat, I'm personally using the iStat Pro version of the software.

    Just copy and paste the format below and fill in your own stats.

    Computer = 27" Quad Core i7 iMac, 2TB HDD, 8GB RAM

    Temps (Celsius)

    HD - 43
    CPU - 32
    Ambient - 16
    GPU Diode - 46
    GPU Heatsink - 45
    Mem Controller - 38
    Optical Drive - 33
    Power Supply 2 - 44

    Fans (RPM)

    Optical Drive - 997
    Hard Drive - 1099
    CPU Fan - 938
     
  2. cmvsm macrumors 6502a

    cmvsm

    Joined:
    Nov 12, 2004
    #2
    Mine's running right about where yours is overall.
     
  3. Xiao macrumors newbie

    Joined:
    Nov 12, 2009
    #3
    Mines a few degrees over yours, also does your mac get hot under bootcamp windows xp? with 30% cpu being used doing nothing?
     
  4. GugGog macrumors newbie

    Joined:
    Dec 11, 2009
    #4
    My istats were identical to the original poster's, and the machine was identically specced, except that the Hard Drive fan's RPM was drastically higher.

    It started around 1300, and over the course of an hour, roared up to 6500+ RPM and stayed there, creating an incredible noise to rival an Xbox 360's! As waiting around for another I7 would take too long, I returned the machine (locally), and brought back an I5 which is completely silent.

    EDIT: This "full on fan" didn't seem to be a problem, aside from the noise, as programs and installations (and a three-day 7-pass erase) seemed unaffected.

    I believe a sensor problem was the culprit, but I had light bleed issues too.

    Cheers,

    Gg
     
  5. peskaa macrumors 68020

    peskaa

    Joined:
    Mar 13, 2008
    Location:
    London, UK
    #5
    Temperature
    Ambient - 14
    CPU - 33
    GPU Diode - 42
    GPU Heatsink - 41
    Memory Controller - 33
    Optical Drive - 26
    Power Supply - 40
    Hard Drive - 28

    Fans
    CPU Fan - 940rpm
    Hard Drive Fan - 1099rpm
    Optical Drive Fan - 998rpm

    Load Average
    0.11, 0.21, 0.15


    To be honest, this is cold. My study is normally up at around 20-22 Ambient, with the CPU then in the high 40s to low 50s, with the GPU sitting at the 60-65 mark. Power Supply is the hottest, at around 70.


    EDIT: i7, 8GB RAM, 2TB HDD. Flickering/blackout screen issue
     
  6. quagmire macrumors 603

    quagmire

    Joined:
    Apr 19, 2004
    #6
    Computer = 27" Quad Core i7 iMac, 1TB HDD, 4GB RAM

    Temps (Celsius)

    HD - 37
    CPU - 34
    Ambient - 18
    GPU Diode - 48
    GPU Heatsink - 46
    Mem Controller - 39
    Optical Drive - 33
    Power Supply 2 - 49

    Fans (RPM)

    Optical Drive - 998
    Hard Drive - 1099
    CPU Fan - 939

    This is after idling awhile and coming back to do some simple web browsing.
     
  7. spencers macrumors 68020

    spencers

    Joined:
    Sep 20, 2004
    #7
    27" iMac C2D 3.06

    HD: 34
    CPU: 31
    Ambient: 16
    GPU Diode: 38
    GPU Heatsink: 36
    Mem Controller: 43
    Northbridge: 58
    Optical Drive: 34

    Fans:
    Optical Drive: 998 rpm
    Hard Drive: 1099 rpm
    CPU Fan: 940 rpm

    Pretty much idle:
    0.20, 0.38, 0.32
     
  8. PatrickCocoa macrumors 6502a

    Joined:
    Dec 2, 2008
    #8
    21.5" core 2 duo iMac, 2TB HDD, 4GB RAM

    Computer = 21.5" core 2 duo iMac, 2TB HDD, 4GB RAM

    Temps (Celsius)

    HD - 46
    CPU - 37
    Ambient - 19
    GPU Diode - 50
    GPU Heatsink - 48
    Mem Controller - 46
    Optical Drive - 39
    Power Supply 2 - 44

    Fans (RPM)

    Optical Drive - 999
    Hard Drive - 1099
    CPU Fan - 1198
    __________________
     
  9. Transeau macrumors 6502a

    Transeau

    Joined:
    Jan 18, 2005
    Location:
    Alta Loma, CA
    #9
    I'm too lazy to type it out :)
     

    Attached Files:

  10. peskaa macrumors 68020

    peskaa

    Joined:
    Mar 13, 2008
    Location:
    London, UK
    #10
    And also too lazy to briefly change it to Celsius so everybody is singing off the same sheet...
     
  11. spencers macrumors 68020

    spencers

    Joined:
    Sep 20, 2004
    #11
    Good job at not reading the OP.
     
  12. workerbee macrumors member

    Joined:
    Oct 26, 2006
    #12
    Stats are almost exactly the same as OP's.
    stock i5 iMac
     
  13. dave92029 macrumors member

    Joined:
    Dec 8, 2008
    #13
    Computer = 21.5" Core 2 duo 3.06 iMac, 500 GB HDD, 4GB RAM

    Temps (Celsius)


    CPU - 38
    Ambient - 19
    Mem Controller - 45
    Northbridge -55
    Optical Drive - 44
    Power Supply 2 - 48
    HDD- 51

    Fans (RPM)

    Optical Drive - 998
    Hard Drive - 1099
    CPU Fan - 1198
    :D :apple: :D

    ________________
     
  14. Kirbdog macrumors regular

    Kirbdog

    Joined:
    Feb 3, 2005
    Location:
    Whistler, British Columbia, Canada
    #14
    Computer = 27" Quad Core i7 iMac, 2TB HDD, 8GB RAM

    This is what I typically see when the machine is not in use: (Left) This typical under full load: (Right)
    [​IMG] [​IMG]


    I generally see fairly high HDD temps, my iMac has a 2TB Hitachi. Is anyone else getting high temps with their Hitachi drive?
     
  15. Transeau macrumors 6502a

    Transeau

    Joined:
    Jan 18, 2005
    Location:
    Alta Loma, CA
    #15
    I'm sure you will get over it.
     
  16. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #16
    pretty much seeing the same as everybody else is here. my GPU seems to idle a bit higher, sometimes around 60°C. not sure why but its well within limits. :)

    will post a picture when i can get one!
     
  17. spencers macrumors 68020

    spencers

    Joined:
    Sep 20, 2004
    #17
    Is that idle? What's this temperature like under a heavy load (ie encoding video)?

    Yet you're not lazy enough to come back and post a sly response instead of changing your image to reflect Celsius? You have seriously added nothing to this thread.
     
  18. whoisrhp macrumors member

    Joined:
    Sep 28, 2008
    #18
    wow your HD only goes up to 50 c? :( mine's usually around 50c when just browsing the internet for an hour or so, but when I watch hulu or any kind of video it skyrockets to 60 c.. should I be concerned / worried? im scared of HD errors later on down the road.
     
  19. iMatthew macrumors member

    iMatthew

    Joined:
    Dec 3, 2009
    #19
    27" iMac C2D 3.06

    HD: 49
    CPU: 34
    Ambient: 15
    GPU Diode: 45
    GPU Heatsink: 44
    Mem Controller: 46
    Northbridge: 56
    Optical Drive: 44

    Fans:
    Optical Drive: 999 rpm
    Hard Drive: 1106 rpm
    CPU Fan: 999 rpm

    Only thing running was the Logmein session I needed to grab my istats.
     
  20. scroto macrumors regular

    scroto

    Joined:
    Aug 14, 2009
    Location:
    Trenton, MI
    #20
    Why are you guys posting idle temps? They mean nothing, run 20 passes of LINX or IBT and then post your max temps.
     
  21. spencers macrumors 68020

    spencers

    Joined:
    Sep 20, 2004
    #21
    I didn't realize this until you posted it! True story. Idle temps are also important--they show if a probe is too hot, even at idle.

    I'm also interested to know your Northbridge temperature under load.
     
  22. iMatthew macrumors member

    iMatthew

    Joined:
    Dec 3, 2009
    #22
    spencers, I will handbrake a movie tonight and post my Northbridge temp for you.
     
  23. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #23
    Whilst it is a tiny bit hot, you really shouldn't be concerned about it....
     
  24. spcdust thread starter macrumors 6502a

    spcdust

    Joined:
    May 6, 2008
    Location:
    London, UK
    #24
    The idle temps are just as relevant as the temps when the iMac is under load, this thread is purely for users to get a sense of what the average is under these particular conditions. By all means start another thread with a standardised set of CPU / GPU intensive tasks and I'll happily post my stats for you.
     
  25. iMatthew macrumors member

    iMatthew

    Joined:
    Dec 3, 2009
    #25
    Northbridge temp capped at 61 while using handbrake
     

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