RAM question

Discussion in 'iMac' started by cain772, Mar 11, 2015.

  1. cain772 macrumors member

    Joined:
    Aug 12, 2014
    Location:
    Tijuana, Mexico
    #1
    Can I mix two different sizes together? My iMac Retina has four slots for RAM and it came with 2 4 GB sticks. Can I put 2 8 GB sticks or does it have to be of matching size?
     
  2. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #2
    Yes, you can mix them.
     
  3. Intell macrumors P6

    Intell

    Joined:
    Jan 24, 2010
    Location:
    Inside
    #3
    Yes, you can mix different sizes of memory. But for best performance, it is always best to use identical sizes.
     
  4. redheeler macrumors 603

    redheeler

    Joined:
    Oct 17, 2014
    #4
    Performance shouldn't be affected by using different sizes as long as the RAM is in matched pairs.
     
  5. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #5
    There is a slight performance benefit (around 5%) in using matched pairs of RAM. However, if you have two sets of matched pairs, (2x4GB and 2x8GB), you still get that benefit, even if the two pairs are not the same size. If you actually need and will use the added RAM, the increase in RAM will outweigh any benefit of using matched pairs.
     
  6. cain772 thread starter macrumors member

    Joined:
    Aug 12, 2014
    Location:
    Tijuana, Mexico

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