G5 run louder than nornal?

Discussion in 'PowerPC Macs' started by honam1021, Sep 5, 2013.

  1. honam1021 macrumors regular

    Joined:
    Nov 4, 2012
    #1
    So I finally found an air deflector for my Power Mac G5, I tried to play the 2 videos mentioned here, both of them play smoothly in VLC with just one problem, noise.

    The noise become quite noticeable (but still quieter than w/o air deflector) when I play a 1080p video, the fans ramp up even during lightweight tasks like finder generating thumbnails for files.

    This video shows a 1.8 DP G5 playing 1080p videos, the machine used in the video remains silent all the time.

    Then I booted into ASD 2.5.7 and attempted to run a thermal calibration, the calibrate button was grayed out with something like "no calibration needed". Now I don't know if the noise actually comes from aging fans, or if there's something wrong with my G5?
     
  2. rabidz7 macrumors 65816

    rabidz7

    Joined:
    Jun 24, 2012
    Location:
    Ohio
    #2
    Make sure that your thermostat is set to 18-20C, too high and the G5 will get hot too.
     
  3. honam1021 thread starter macrumors regular

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    Nov 4, 2012
  4. rabidz7 macrumors 65816

    rabidz7

    Joined:
    Jun 24, 2012
    Location:
    Ohio
    #4
    It should, I use arctic silver, most use MX-4.
     
  5. Intell macrumors P6

    Intell

    Joined:
    Jan 24, 2010
    Location:
    Inside
    #5
    Don't use Artic Silver in a G5. Use only MX-4.

    PS: Before heading any of the other poster's advise, always get a second opinion or do some research of your own.
     
  6. 666sheep, Sep 6, 2013
    Last edited: Sep 8, 2013

    666sheep macrumors 68040

    666sheep

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    Dec 7, 2009
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    Poland
    #7
  7. honam1021 thread starter macrumors regular

    Joined:
    Nov 4, 2012
    #8
    I monitored the temps for a while, the CPU temps often goes up to 60 C then quickly drop back to 45 C, I think this is the cause of the fan noise (Perhaps it's a sensor problem)
     
  8. rabidz7 macrumors 65816

    rabidz7

    Joined:
    Jun 24, 2012
    Location:
    Ohio
    #9
    The G5 heats up to 60C, the fans kick in and cool it to 45C, the fans stop, the G5 heats up to 60C, repeat endlessly. Apple sure was good with the fan algorithms (sarcastic).
     
  9. honam1021 thread starter macrumors regular

    Joined:
    Nov 4, 2012
    #10
    I found this in a old topic:
    Instead of letting the temps raise and cool it down quickly once it reach 60 C, the custom fan profile tries to maintain the temps at 135 f (57 C). But I don't know how to apply the mod
     
  10. honam1021 thread starter macrumors regular

    Joined:
    Nov 4, 2012
    #11
    I kinda solved the noise issue by removing the intake fans, the computer is a bit more toasty (around 65-70 C under load) but the it's a lot quieter.
     

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