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  1. #1

    mac57's Avatar
    Member Since
    Apr 29, 2006
    St. Somewhere
    iMac 27" 3.4 GHz, 256 GB SSD, 2 TB HDD, 8 GB RAM
    Safe Operating Temperature, GPU?
    I recently discovered a really neat screen saver called LotsaWater, which makes it look like your desktop is made of water upon which it is raining gently. It is a wonderful effect, extremely well done. See if you would like to get it yourself.

    On the author's web site, he indicates that it is fairly CPU intensive, but that is not my concern. On the PowerMac G5 it is not too much of a worry. However, I am worried about the graphics unit.

    Using iStatPro, I see that the normal operating temperature of the GPU is somewhere in the 60 C region (58-60 is normal on my machine). When LotsaWater has been running for a while, it jumps up to between 68 C and 70 C. So, all that water ripple simulation is really making it work hard.

    So, the question is: is this a safe long term operating temperature for the GPU? If anyone knows, or if they know that they regularly run at this temperature because they are doing graphics intensive work, I would love to hear. Thanks!
    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
    My iStuff: 64GB iPhone 5, 64GB iPad4, 30GB iPod Video, 16GB iPod Touch
    My OS': Mac OS X Lion, Mac OS X Snow Leopard, Mac OS X Tiger, Mac OS 9.2.2, openSUSE 10.3
    I was on the Mac-Forums honor roll for September 2007

  2. #2

    Member Since
    Aug 29, 2006
    Tampa, FL
    Powerbook G4 12" 1.5GHz
    That temp sounds OK to me. Screen savers like that tend to eat up the video card, so it would be the same as gaming or doing intensive graphics...

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