beige g3 vcore mod?

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

  1. wr0x2
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    macrumors member

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    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. Mord
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    macrumors G4

    Mord

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    Aug 24, 2003
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    #2
  3. wr0x2
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    thread starter macrumors member

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    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. Mord
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    macrumors G4

    Mord

    Joined:
    Aug 24, 2003
    Location:
    UK
    #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. wr0x2
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    thread starter macrumors member

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    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. applemacdude
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    macrumors 68040

    applemacdude

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