Will 1600 Memory work in Late 2009 iMac

Discussion in 'iMac' started by Valerij Zajcev, Apr 14, 2014.

  1. Valerij Zajcev macrumors newbie

    Dec 14, 2010
  2. mmomega macrumors demi-god


    Dec 30, 2009
    DFW, TX
    The iMac will down clock RAM to it's MAX speed but I am not sure if there is some sort of limit to how far "down" it will do so.

    I placed some 1866MHz RAM in a machine that only goes to 1600 and it down clocked the RAM to 1600 automatically.

    Here are 2 links to Amazon with 1066 RAM.
    4GB Kit
    8 GB Kit
  3. Dreadnought macrumors 68020


    Jul 22, 2002
    Almere, The Netherlands
    Always put the ram modules in pairs. You can also put the 1333 ram modules in there. I believe the latency is also better than 1600 ram. They are pretty cheap now a days, about 20 Euro for a 2 GB module. So start with 2 x 2GB would be my advise, depending what you're going to use it for.
  4. Valerij Zajcev thread starter macrumors newbie

    Dec 14, 2010
    Tried. 1600Mhz don't work. 1333Mhz work. Just if anyone needed.

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