OverClocking G4 tower

Discussion in 'Macintosh Computers' started by VegetaPunk, Mar 23, 2003.

  1. macrumors 6502

    Joined:
    Dec 30, 2002
    Location:
    AZ
    #1
    I have a G4 500 mhz Tower and I read an article somewhere that you could OverClock the bus speed.

    Has anyone done this??
    What are the chances of messing up my hardware??
    Plus any Advise
     
  2. Moderator emeritus

    edesignuk

    Joined:
    Mar 25, 2002
    Location:
    London, England
    #2
    I have no idea if it can be done, but if it can, then Xlr8yourmac should have some info on it.
     
  3. macrumors 603

    janey

    Joined:
    Dec 20, 2002
    Location:
    sunny los angeles
    #3
    Re: OverClocking G4 tower

    99% chance you might screw up :D
     
  4. macrumors regular

    Joined:
    Jul 3, 2002
    #4
    Re: Re: OverClocking G4 tower

    Uh, not really.

    Follow the directions on XLR8YOURMAC.COM, and run it with the case closed so you don't overheat. Try it in small steps, and run a calculation-intense program like Altivec Fractal Carbon to ensure system stability and you'll be fine.

    You may want to consider adding a fan to the processor in order to help cooling.

    Worst case, as long as youre careful, is that the machine doesn't boot, you back down the speed, and you're back to square one.

    I O/Ced my machine 100MHz for over a year with no problems.
     
  5. macrumors 6502a

    Vlade

    Joined:
    Feb 2, 2003
    Location:
    Meadville, PA
    #5
    Re: Re: Re: OverClocking G4 tower

    Actually on alot of machines you need to soder and cut off resistor paint. I really dont think a 10% increase of speed is worth voiding your warrenty and maybe losing your machine.
     
  6. thread starter macrumors 6502

    Joined:
    Dec 30, 2002
    Location:
    AZ
    #6
    you dont have to do anything to the hardware you just have to do something in the command line or something when you boot up, it said if you want it back to what it was to just zap your pram
     
  7. macrumors 6502a

    Vlade

    Joined:
    Feb 2, 2003
    Location:
    Meadville, PA
    #7
    Almost every new chip design or tower mod changes how you do it.
     
  8. macrumors regular

    Joined:
    Jul 3, 2002
    #8
    Re: Re: Re: Re: OverClocking G4 tower

    Not on a G4/500 tower, which is what he has... it's just jumpers.

    the iBook 500 needed resistor changes via soldering. The iBook 700 can do it in software. On a notebook, though, heat issues make OCing not worth it.
     
  9. macrumors 65816

    benixau

    Joined:
    Oct 9, 2002
    Location:
    Sydney, Australia
    #9
    the MDD2002 pmacs allow it to be done in OF. i did it, DP867 -> DP1083

    it just upped the FSB to 167 from 133. i could do it more but the i would be truly overclocking it rather than unlocking the extra speed.

    but really - if it can be undone so that apple dont know you did it (in case of a burn out) then go for it. and may the force be with you
     
  10. macrumors 65816

    Nipsy

    Joined:
    Jan 19, 2002
    #10
    Ummmm....the only problem with this method, is that no actual overclocking occurs, just some number changes in windows & dialog boxes.

    Unless you know something I don't?

    Do you have before/after Xbench results?
     
  11. thread starter macrumors 6502

    Joined:
    Dec 30, 2002
    Location:
    AZ
    #11
  12. macrumors regular

    Joined:
    Jul 3, 2002
    #12
    probably not worth it if you need to buy memory.

    Do you have a PCI or AGP model? Can't remember off the top of my head if they offered a Yikes 500.
     
  13. macrumors 68000

    Freg3000

    Joined:
    Sep 22, 2002
    Location:
    New York
    #13
    Sorry for a stupid question.....but what is OF?
     
  14. macrumors G4

    Joined:
    Jul 18, 2002
    Location:
    I accidentally my whole location.
    #14
    Open Firmware
     

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