14GB unmatched RAM in iMac. Should I?

Discussion in 'iMac' started by roberthallin, Jan 7, 2016.

  1. roberthallin, Jan 7, 2016
    Last edited: Jan 8, 2016

    roberthallin macrumors member

    Oct 25, 2009
    Stockholm, Sweden

    Currently I run my 2011 iMac with 12GB of ram, where the configuration is 2x4GB in the lower slots and 2x2GB in the upper. I have a 4GB stick lying around that i salvaged from another computer that would fit in there, making it 2x4, and the one 2GB and one 4GB for a grand total of 14GB. The 2 and 4 wouldn't be matched pairs so I assume i would lose dual channel support in at least on of the slot pairs, or maybe both?

    Is my current configuration preferable to the one I'm thinking of? Theres no pressing need for it, I just thought that if it doesn't have any impact why not put that extra one in there.

  2. Samuelsan2001 macrumors 604

    Oct 24, 2013
    I doubt you'll notice the difference one way or the other do it if you like.
  3. dogslobber macrumors 68040


    Oct 19, 2014
    Apple Campus, Cupertino CA
    Agree. I've run unmatched RAM pairs across various Mac products for years without noticing any issues. Dual channel only gives a few % increase in speed AFAIU.

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