SO-DIMM DDR3RAM didn’t work iMac late 2009

Discussion in 'iMac' started by dannydagranny, Dec 7, 2018.

  1. dannydagranny macrumors newbie

    Joined:
    Dec 7, 2018
    #1
    My iMac 21.5” late 2009 didn’t accept a SO-DIMM DDR3 PC12800 4 GB from Team Group, it only beepeed when I tried to power on. Why?
     
  2. nambuccaheadsau macrumors 68000

    nambuccaheadsau

    Joined:
    Oct 19, 2007
    Location:
    Nambucca Heads Australia
    #2
    4 - 204-pin PC3-8500 (1066 MHz) DDR3 SO-DIMM

    Coz it is the wrong memory. Above is from Mactracker. Macs are very fussy about modules, especially older models. Crucial and OWC, both Mac specialists, recommended.
     
  3. dannydagranny thread starter macrumors newbie

    Joined:
    Dec 7, 2018
    #3
    So even if the RAM I bought was backward compatible with PC3-8500 1066MHz it’s a no no?
     
  4. nambuccaheadsau macrumors 68000

    nambuccaheadsau

    Joined:
    Oct 19, 2007
    Location:
    Nambucca Heads Australia

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