RAM for G4 Power Mac, which kind?

Discussion in 'MacBook Pro' started by ChrisA, Apr 9, 2007.

  1. ChrisA macrumors G4

    Jan 5, 2006
    Redondo Beach, California
    If seems that I have a choice. A couple kinds of RAM are listed as "working". The machine is a G4 Power Mac "Digital Audio" that has had a processor upgrade to a G4 1.2Ghz. "About this Mac" shows two RAM parts 256MB and 128MB both listed as "PC133 333".

    OWC (macsales.com) list two parts they say will fit
    • PC133 CL3 322
    • PC133 CL2 222
    Will the faster part really make any difference? I want to pull the 128MB SIMM and put in two 512MB parts.
  2. deadpixels macrumors 6502a

    Oct 30, 2006
    you're talking about the difference in latency speed? if yes and you don't mind reading a bit, see here --> Does RAM Latency Matter? i didn't read the whole thing but it seems really detailled :D
  3. Sweetfeld28 macrumors 65816


    Feb 10, 2003
    Buckeye Country, O-H
    You can use any stick that is PC133 compatible, 128, 256, or 512MB. You could even use PC133/PC100 sticks, these are backwards compatible sticks. Hope that helps.
  4. CanadaRAM macrumors G5


    Oct 11, 2004
    On the Left Coast - Victoria BC Canada
    ummm...no. Not any PC133 will work.

    The module has to be correctly programmed (SPD settings) to be recognized by the Mac. If not it will kernel panic or just not be recognized. Remember all the fuss caused by Firmware Upgrade 1.2 when improperly programmed modules stopped working?
    It also cannot be a high density 512 Mb module.

    The earliest "Yikes" (PCI) G4's and the B&W G3's have more stringent requirements yet.

    Your best bet is to go with a reputable seller who teats and guarantees compatibility with your specific model Mac, offers a lifetime warranty and a no cost return or exchange if it doesn't work.


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