G4 MDD weird memory issue

Discussion in 'PowerPC Macs' started by desantii, Apr 20, 2011.

  1. desantii, Apr 20, 2011
    Last edited: Apr 20, 2011

    macrumors 6502

    desantii

    Joined:
    Sep 9, 2006
    Location:
    Aurora, IL
    #1
    Hi, I have a 1.42MDD (OC to 1.5ghz). The machine works great with one ram stick. When ever I use a second one (even an identical to the first one Kingston PC2700) I get random Kernel Panics, specially on Firefox/Safari. Works great with just one stick

    I tried with a regualr 1.42ghz baord and same issue

    I have tried with several ram sticks and its always the same, works with1, freezes with more than 1

    thanks
     
  2. macrumors 6502

    d88co88

    Joined:
    Dec 8, 2009
    Location:
    MN
    #2
    Sounds to me like bad ram. Do you have any other compatible ram you can test it with?
     
  3. thread starter macrumors 6502

    desantii

    Joined:
    Sep 9, 2006
    Location:
    Aurora, IL
    #3
    I have four 512mb simms. They all work great when there is only 1 simm. If I put in more than 1 I gte the lockups
     
  4. macrumors 65816

    adcx64

    Joined:
    Nov 17, 2008
    Location:
    Cudi Zone
    #4
    Maybe a bad ram slot.... Check to see if there's any dirt or debris in the slot
     
  5. thread starter macrumors 6502

    desantii

    Joined:
    Sep 9, 2006
    Location:
    Aurora, IL
    #5
    ready to give up, swapped slots, different pairs...

    but with only 512mb (ant simm) works great
     

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