How to tell if this iMac memory is bad?

Discussion in 'iMac' started by mindquest, Nov 27, 2012.

  1. mindquest macrumors regular

    Joined:
    Oct 25, 2009
    #1
    I have a late 2009 iMac 27" i7 (model identifier 11,1) and just bought another 8GB (2x4GB) of ram to throw into it from OWC. Here is the exact item:

    DDR3, 204 PIN PC3-8500
    http://eshop.macsales.com/item/Other World Computing/8566DDR3S8GP/

    I pulled the old memory and only added the new memory modules to run a Memtest86 via CD boot. Since I only received 8 errors on just one test after 6 passes is that acceptable? Or I do I need to figure out which module it is and send it back?

    Here is what the test showed after 6 passes at the 2 modules:
     

    Attached Files:

  2. mindquest thread starter macrumors regular

    Joined:
    Oct 25, 2009
    #2
    Updated: I called OWC and they said not to worry and that I should call again if I experienced some performance issues after using this memory for awhile.

    Not sure I agree, shouldn't new memory have no errors?
     
  3. ChrisMan287 macrumors 6502

    ChrisMan287

    Joined:
    Nov 18, 2012
    Location:
    NY.
    #3
    Stick your old RAM back in and give it a try.
     
  4. mindquest thread starter macrumors regular

    Joined:
    Oct 25, 2009
    #4
    I already ran memtest86 with the Apple ram ONLY for 8 passes and no errors.
     
  5. ChrisMan287 macrumors 6502

    ChrisMan287

    Joined:
    Nov 18, 2012
    Location:
    NY.
    #5
    So the OWC memory must be bad. It's strange because IIRC, they test the memory before it ships but I could be wrong.

    Tell them that there should be zero errors with new memory and you'd like an exchange for new memory.
     

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