ATIaccelerator on Rage 128

Discussion in 'PowerPC Macs' started by Hughmac, Jun 7, 2019.

  1. Hughmac macrumors demi-god

    Hughmac

    Joined:
    Feb 4, 2012
    Location:
    Kent, UK
    #1
    Apologies if this has been covered before, but how high can I push ATIaccelerator on a Pismo with the 8mb Rage 128 graphics?
    Currently I'm running it 20% higher with no problems, and apparently 2-3 frames per second gain.

    Cheers :)

    Hugh
     
  2. timidpimpin macrumors 6502

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    Cascadia
    #2
    I wouldn't go much higher than 25-30%. Higher than that could do permanent damage IMO.
     
  3. Hughmac thread starter macrumors demi-god

    Hughmac

    Joined:
    Feb 4, 2012
    Location:
    Kent, UK
    #3
    Well at the moment I'm on a 'safe' 20%, but I've no idea about temps, as there don't appear to be any sensors I can read from.

    Cheers :)

    Hugh
     
  4. sparty411 macrumors member

    sparty411

    Joined:
    Nov 13, 2018
    #4
    If you aren't feeding it more voltage, I don't believe any harm can come of it.
     
  5. timidpimpin macrumors 6502

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    #5
    It can still overheat though.
     
  6. timidpimpin macrumors 6502

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    #6
    You could likely do 50% if you attached a small fan to the card.
     
  7. B S Magnet macrumors 6502

    B S Magnet

    Joined:
    Dec 5, 2018
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    #7
    I deal with this on my clamshell, which features the same video card and LCD specs (1024x768).

    Quite plainly, when setting it, I pay very close attention to the screen itself (it helps when you use a flat grey desktop for this) and watch for the appearance of any “artifacting”.

    I also open a music video clip (360p usually) in QuickTime 7 and run it whilst also paying close attention to Dock icons, desktop icons, and the Dock tray dropping in/off the screen edge. I adjust as high as both overclocking the GPU and the VRAM will allow before that said artifacting begins to appear. From there, I move the sliders both down a notch.

    Presently, with the clamshell, I’m running 16.19% for both settings (122.00MHz). It’s not a stupendous overclock, but I’d rather keep it running smooth for the long haul.
     

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  8. timidpimpin macrumors 6502

    Joined:
    Nov 10, 2018
    Location:
    Cascadia
    #8
    I actually forgot that I used to use this tool on a headless G4 mini to down-clock the 9200 by about 95%, and it lowered power consumption and heat by a lot. So it's a good option for headless machines with non-removable GPU to lower power use.
     

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7 June 7, 2019