1. Graham Lee77's Avatar
    Hi all,

    Just taken delivery of an iMac 27" 5k Retina with 3.3ghz Core i5 cpu, 8gb of RAM.

    I was planning to upgrade the RAM myself to either 16gb or 24gb dependent on how cheap I can get it.

    Now, the DDR3 PC14900 ram it came with is 1867mhz, and in the UK you can only get 1866mhz presently. Would this be a problem if I bought 8gb (2x4) of this memory (its Crucial), or am I better sourcing the correct speed with +1mhz from OWC in the states?

    Thanks
    11-04-2015 07:34 AM
  2. Peligro911's Avatar
    Hi all,

    Just taken delivery of an iMac 27" 5k Retina with 3.3ghz Core i5 cpu, 8gb of RAM.

    I was planning to upgrade the RAM myself to either 16gb or 24gb dependent on how cheap I can get it.

    Now, the DDR3 PC14900 ram it came with is 1867mhz, and in the UK you can only get 1866mhz presently. Would this be a problem if I bought 8gb (2x4) of this memory (its Crucial), or am I better sourcing the correct speed with +1mhz from OWC in the states?

    Thanks
    i am not 100% sure but i think all that would happen is it would down clock the ram so your 1867 mhz would run at 1866 like the rest. If it were me i would just match what is in the mac currently
    Graham Lee77 likes this.
    11-04-2015 11:27 AM
  3. Graham Lee77's Avatar
    i am not 100% sure but i think all that would happen is it would down clock the ram so your 1867 mhz would run at 1866 like the rest. If it were me i would just match what is in the mac currently
    I've ordered it from the States. Better to keep it at optimum speed than save a few notes.

    Thanks for your help.
    Peligro911 likes this.
    11-04-2015 11:56 AM

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