beige g3 vcore mod?

Discussion in 'Macintosh Computers' started by wr0x2, Jul 25, 2004.

  1. macrumors member

    Joined:
    Oct 12, 2003
    #1
    I have a couple of old beige G3s, one running at 233 mhz. I want to overclock it as far as it will go, and I don't care about blowing the processor or logic board since I got it out of the garbage and I have more. Anyway, I tried the jumper config for 266 mhz w/ 66mhz bus and it'll boot os9, but 300 mhz just doesn't work. I have excellent cooling in the form of a huge athlon heatsink and voltmodded fan so I'm not worried about overheating. Is there some way that I can increase voltage to the processor so I can get a stable 300mhz overclock?
     
  2. macrumors G4

    Mord

    Joined:
    Aug 24, 2003
    Location:
    Old York
    #2
  3. thread starter macrumors member

    Joined:
    Oct 12, 2003
    #3
    Maybe you misread my first post, sorry if I didn't explain that the socket A heatsink is already attached. Also, I am running with the original g3, I don't have a g4.
     
  4. macrumors G4

    Mord

    Joined:
    Aug 24, 2003
    Location:
    Old York
    #4
    sorry i clicked reply and went to take a no.2 and when i got back i completely forgot that you said that.

    that table applys to all zif's because they are the settings for the voltage that will be supplyed to the g3/g4 not ones that are specific to the cpu type.

    also be wary of useing high power peltiers on that power supply only use low power ones below 20w.
     
  5. thread starter macrumors member

    Joined:
    Oct 12, 2003
    #5
    Thanks for the info. Also, I'm using a 400w atx powersupply and a secondary 250w voltmodded one for cooling. I don't have to worry about straining my psu I believe :D.
     
  6. macrumors 68040

    applemacdude

    Joined:
    Mar 26, 2001
    Location:
    Over The Rainbow
    #6

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