iBook G3 Dual USB not recognizing new RAM

Discussion in 'PowerPC Macs' started by tommer419, Jul 19, 2010.

  1. tommer419 macrumors newbie

    Joined:
    Jul 19, 2010
    Location:
    College Park, MD
    #1
    Hi, I'm new here so go easy on me.

    I have an iBook G3 Dual USB with 256MB of RAM currently (128 on LB, and 128 in the user accessible slot under the keyboard). I bought a 512MB chip on eBay that meets the exact specs of the required RAM (512MB PC133 SDRAM SODIMM 3.3V) but when I insert it into the RAM slot and turn on the iBook, it says in About This Mac that I only have 128MB of RAM. Any suggestions to what I can do, or is the chip possibly not compatible with Apple?
     
  2. d88co88 macrumors 6502

    d88co88

    Joined:
    Dec 8, 2009
    Location:
    MN
    #2
    Are you absolutely sure you seated it properly?
     
  3. OrangeSVTguy macrumors 601

    OrangeSVTguy

    Joined:
    Sep 16, 2007
    Location:
    Northeastern Ohio
    #3
    Sounds like you bought the high-density memory. Do you have the link to the auction that you won? Those iBooks were picky with memory so it's always best to stick with a name brand manufacturer. Crucial, OWC, Kingston... etc.
     

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