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  1. #1

    Member Since
    Apr 11, 2012
    Installing new RAM in iMac(slot configuration)
    I just installed 12GB of new ram into my 2011 27-inch iMac (x2 - 2GB[original], x2 - 4GB[from Crucial]).

    I seem to recall reading an article somewhere that you can get better performance out of your ram depending on how you arrange them in your slots, especially if they're not all the same size.

    Any truth to this? Thanks!

  2. #2

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Keller, Texas
    2017 27" iMac, 10.5" iPad Pro, iPhone 6s+, iPhone 7+, Numerous iPods, High Sierra
    Yes, there is some truth, however, my experience is that I can not notice any difference. Here is what the "experts" say:

    Install the larger configuration modules in the first bank and lower configuration modules in the second bank. In other words, the 2 x 4 GB modules should be installed in bank 1 and the 2 x 2 GB modules in bank 2. In pairs of course.

    But as I stated above, I can't tell the difference (with my 2011 iMac). If you installed the modules opposite from what's recommended, don't worry about it.

  3. #3

    Member Since
    Apr 11, 2012
    Thanks for the help!

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