riMac 5K P3 - Keep old 32gb 1333 RAM?

Discussion in 'iMac' started by eoren1, Oct 18, 2015.

  1. eoren1 macrumors 6502

    Joined:
    Aug 17, 2007
    #1
    I'm planning to purchase the new riMac 27" once user reviews are in and I can make up my mind about the CPU and GPU choices (Likely setup will by i7/395/512GB SSD/trackpad for a photography workflow).

    I just checked my 2011 iMac and I have four 8gb 1333MHz DDR3 ram in it. I plan to sell the iMac locally for about $650 (going rate for my model on eBay). I just realized I could potentially swap out the memory from my 2011 iMac to the new one (and vice versa).

    Questions:
    1. Is there any real world difference in using 1867MHz vs 1333MHz RAM?
    2. Will the 2011 iMac work with two 4GB 1867MHz RAM sticks taken from the 2015?

    Thanks!

    E
     
  2. yuhong macrumors newbie

    Joined:
    May 4, 2008
    #2
    The older machine should be able to downclock the faster RAM if needed
     

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