RAM upgrade question

Discussion in 'iMac' started by coobelt, Mar 29, 2017.

  1. coobelt macrumors newbie

    Mar 24, 2017
    If I was to buy an imac 27 with the standard 8GB of RAM, then add two 8GB crucial RAM in the free slots, would that be safe?

    Or does each slot have to be filled with the same amount? Something tells me yes but I can't find the answer anywhere.

    Reason being it would be nice to add 16GB to the existing 8GB using less money that would be spent on only 16GB Apple RAM...
  2. Fravin macrumors regular


    Mar 8, 2017
    Rio de Janeiro, Brazil
  3. redheeler macrumors 604


    Oct 17, 2014
    You most definitely can, I ran mine with 2x8 GB and 2x4 GB original Apple RAM and had no problems with that. As above simply make sure the speeds match (for the current 5K iMac it will be 1866 or 1867 MHz). Slightly slower or faster RAM should also work, but the faster will run at the speed of the slower.
  4. coobelt thread starter macrumors newbie

    Mar 24, 2017
    This is great news. Thank you both for your help
  5. cynics macrumors G4

    Jan 8, 2012
    That is exactly what I have, with Crucial RAM. Its been fine for the last 3-4 years.

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