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  1. #1
    iMac fan speed ??

    Member Since
    Jan 14, 2008
    Posts
    26
    iMac fan speed ??
    I have an iMac late 06, 2.16Ghz. I am running istat on my dashboard and it shows temps and fan speeds. I guess the good news is that I can't really hear the fan too much, but it seems that the CPU is running hot. Do the fans automatically adjust speed based on temp? If not, is there a way to adjust them. I know that the cooler the machine the more efficient it runs.

    Any help is appreciated.

  2. #2
    iMac fan speed ??
    mac57's Avatar
    Member Since
    Apr 29, 2006
    Location
    St. Somewhere
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    4,560
    Specs:
    iMac 27" 3.4 GHz, 256 GB SSD, 2 TB HDD, 8 GB RAM
    Hi, how hot is "hot"? Could you post the fan speeds and temps please? Modern CPUs tend to run hot anyway, so you may running at quite a normal temp.
    My Macs: iMac 27" 3.4 GHz, Mac Pro 3.2 GHz, PowerMac G5 Quad 2.5 GHz, G4 Cube with 1.2 GHz Upgrade
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  3. #3
    iMac fan speed ??

    Member Since
    Dec 29, 2007
    Posts
    179
    under load my CPU is @ about 125-130* F, id like to see it when i begin photoshopping again. ive never seen the CPU fan go above 1200rpm, maybe i haven't really looked for it either.

    side note: how do i make istat run on my desktop 24/7??

  4. #4
    iMac fan speed ??

    Member Since
    Jan 14, 2008
    Posts
    26
    The CPU was about 140 with a fan speed around 1000. That was this afternoon. Now it is much cooler at 103 and 799 rpm. It seemed as though 140 was pretty hot.
    Joe
    iMac 2.16Ghz; 20"; 3GB RAM; 250GB HDD; 10.5.2
    Macbook (black) 2.4Ghz; 4GB RAM

  5. #5
    iMac fan speed ??
    MaDDoG's Avatar
    Member Since
    Jan 01, 2007
    Location
    Oz.....near the Wizards home
    Posts
    1,917
    Specs:
    iMac 24' 7 Snow Leopard + Parallels and Win 7 | 30 Gb iPod | Canon EOS 400D
    My MBP has been on all day. Currently watching TV, e-mailing, and talking to you lot. 168 degrees fan 1057 rpm. When doing intensive stuff - photo editing and burning DVD's I have seen this scoot up nquite a bit and the fans you can hear working hard.

    Download SMC fan control.... its free.
    "Life isn't about waiting for the storm to pass. It's about learning to dance in the rain."
    MaDDoG's Photo Gallery - http://mcarfa.smugmug.com/

  6. #6
    iMac fan speed ??
    calenerd's Avatar
    Member Since
    Nov 30, 2007
    Location
    Sunny ol' Singapore
    Posts
    309
    Specs:
    2.4GHz Intel Core 2 Duo 20" iMac
    It seems like my CPU fan and Hard Disk fan are running at 1199rpm almost all the time. Is this bad?

  7. #7
    iMac fan speed ??

    Member Since
    Dec 29, 2007
    Posts
    179
    Quote Originally Posted by calenerd View Post
    It seems like my CPU fan and Hard Disk fan are running at 1199rpm almost all the time. Is this bad?
    thats where mine are always @, i just figured it was normal.

  8. #8
    iMac fan speed ??

    Member Since
    Aug 26, 2008
    Posts
    1
    Specs:
    iMac 2.4 Ghz Core 2 Duo 20"
    Mine are always like that too.

  9. #9
    iMac fan speed ??

    Member Since
    Aug 21, 2008
    Location
    Maryland
    Posts
    233
    Specs:
    2.66Ghz Penryn C2D iMac
    I work in electronics guys, most 65nm or 45nm processed ICs are good for about 70-85 degrees C, don't sweat it if you hit the 50s or 60s. The hottest my processor in my iMac Penny gets is about 48C and usually gets that way after running a 12 track garageband song with lots of Midi, the GPU after playing a game is around 65C.

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