Noise/heat comparison - ATI 5770 to GTX-570?

Discussion in 'Mac Pro' started by khollister, Jun 1, 2012.

  1. khollister macrumors 6502a

    khollister

    Joined:
    Feb 1, 2003
    Location:
    Orlando, FL
    #1
    I have a hex core 2010 MP with the standard 5770. I also have the other 3 PCIe slots filled with a UAD-2 Duo DSP card (audio signal processing), a Newer Tech SAS card and a USB/FW400 card. Both the UAD and the SAS card appear to throw off about 5 watts or so each in heat load. Based on some Windows tests I found online, the 5770 idles at about 140W, going up to 200 or so under "gaming load". The GTX-570 looked to be slightly higher at idle, but about 50% higher under load.

    I should also point out my PCI slot 1 temp sensor reads over 70C when Handbrake is going full tilt if I don't bump the PCI fan up a few hundred RPM with iStat. Even at idle, I think the temp is at least 50C.

    While I would like to use a hacked GTX-570 card to get additional acceleration for CS6, I do not want to run the temps up even more or have to run the GFX card fan at high speed. As it is, the 5770 kicks its fan into overdrive every so often when I'm running Handbrake jobs due to the temp in the PCI bay.

    Anyone have any fan noise and temp rise data that has changed video cards?

    I am also concerned about the reported temps - is this normal for a 5770 or is the reduced airflow from a full card cage part of the problem? I need to pull the other cards out and see what happened to the temps, I guess.
     
  2. derbothaus macrumors 601

    derbothaus

    Joined:
    Jul 17, 2010
    #2
    Those are fairly high temps. I'd pull out all PCI cards and reboot to see what actual idle temps are then slowly add them back in. Plus clean out the heat sinks and fans with compressed air. I remember ATTO had issues with heat on some of it's SAS cards. Honestly my fans hardly ever spin up (minus 5870 when gaming) even using handbrake for 30 min or so. My jobs are done usually after that but temps on proc never go over 50º. You have the right idea. Start over and nuke the culprit.
     
  3. khollister thread starter macrumors 6502a

    khollister

    Joined:
    Feb 1, 2003
    Location:
    Orlando, FL
    #3
    The MP fans don't spin up and all of the temps except for the "PCI slot 1" are quite reasonable.
     

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