Putting 1600MHz and 1833MHz RAMs into the same iMac?

Discussion in 'iMac' started by aaronchow, Apr 28, 2016.

  1. aaronchow macrumors regular

    Sep 29, 2007
    Just curious, will there be a problem if I put the mid-2015 iMac RAM (running at 1600MHz) and the late-2015 iMac RAM (running at 1833MHz) into the same computer? I have a late-2015 iMac at home, and my work has a mid-2015 iMac. I recently upgraded my iMac to 32GB, so I have two spare 2x4GB RAM. I wonder if I can simply put my spare RAM into my work computer, but I don't want to do it if it will damage the computer in any way. Any answer is appreciated.
  2. redheeler macrumors 603


    Oct 17, 2014
    You can do it, but the 1867 MHz RAM will run at 1600 MHz.
  3. mroffbeat macrumors member


    Apr 3, 2010
    Done it myself.. It will show up as xxx ram x 1600mhz.. No probz.
  4. aaronchow thread starter macrumors regular

    Sep 29, 2007
    Thanks All! I just inserted the 1833MHz RAM into the mid-2015 iMac, and the computer is running fine. Thanks again.

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