iMac Mid 2009 20" (EDU model) RAM Upgrade?

Discussion in 'iMac' started by Mark0, Mar 3, 2016.

  1. Mark0 macrumors 6502

    Mark0

    Joined:
    Sep 11, 2014
    Location:
    SW Scotland
    #1
    I am about to receive a 20" iMac Mid 2009 (Education only) model that runs the Core 2 Duo 2.0Ghz and has 4Gb 1067MHz DDR3 RAM installed. I have read conflicting stories about RAM upgrades.

    EveryMac seems to say that when this model was initially released, there was an EFI limitation that restricted this particular model to 4Gb max RAM but that the restriction was lifted at a later date and 8Gb is possible.

    I have read conflicting information elsewhere and nothing concrete.

    I'd like to upgrade using 2x4Gb 1067Mhz Crucial memory DIMMs but I am reluctant to buy some try it out in case it doesn't work.

    I took a note of a serial number from a sample machine but I am not sure if it will be the actual machine I receive (there are 9 being auctioned off). If anyone can check for me using that serial, please let me know! It is: VM933MVH6MH

    Has anyone had any experience with this issue or could check for me?

    Thanks in advance,

    M.
     
  2. keysofanxiety macrumors G3

    keysofanxiety

    Joined:
    Nov 23, 2011
    #2
    Yep, max RAM is 8GB.

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  3. Mark0 thread starter macrumors 6502

    Mark0

    Joined:
    Sep 11, 2014
    Location:
    SW Scotland
    #3
    Thank you very much for the information and the speedy reply. I am glad that it is good news!
    --- Post Merged, Mar 3, 2016 ---
    Also, sorry to be a pain with another request - but where did you find out that information?
     
  4. r6mile macrumors 6502

    Joined:
    Feb 3, 2010
    Location:
    London, UK
    #4
  5. keysofanxiety macrumors G3

    keysofanxiety

    Joined:
    Nov 23, 2011
    #5
    http://www.powerbookmedic.com/identify-mac-serial.php :)
     
  6. Mark0 thread starter macrumors 6502

    Mark0

    Joined:
    Sep 11, 2014
    Location:
    SW Scotland
    #6
  7. r6mile macrumors 6502

    Joined:
    Feb 3, 2010
    Location:
    London, UK
    #7
    Probably because the education model, released in mid-2009, is a slower version of the normal early-2009.
     
  8. Mark0 thread starter macrumors 6502

    Mark0

    Joined:
    Sep 11, 2014
    Location:
    SW Scotland
    #8
    All went according to plan :D
     

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