IMAC RAM upgrade

Discussion in 'iMac' started by dmizesr, Sep 7, 2013.

  1. dmizesr macrumors newbie

    Joined:
    Sep 7, 2013
    #1
    Quick question. I have a late 2009 with 4GB (2x2) and two available slots. Can I put a single 4GB in one of the available slots? Or do I have to have a matching pair of some sort?

    Thanks

    DWM
     
  2. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #2
    You can put in a single module, the advantage of two same modules is a 10 to 20 % RAM performance boost.
     
  3. ConsiderPhlebas macrumors member

    ConsiderPhlebas

    Joined:
    Jul 1, 2011
    Location:
    SC, US
    #3
    Yes, according to Apple support, this takes advantage of the system's dual-channel memory architecture for an additional performance boost. With a dual-channel memory interface, both banks of SDRAM can be addressed at the same time.
     

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