667MHz memory in new iMac - worse performance ?

Discussion in 'iMac' started by st9046, Jun 9, 2008.

  1. st9046 macrumors newbie

    May 8, 2008
    Hi all,

    Bought a new 20" iMac a few weeks ago and on the day I bought it I also bought 4GB memory from Crucial. Only when I was installing it did I notice that the iMac manual instructs to use 800MHz memory, when the new memory I have is 667MHz. I put it in anyway and the iMac works OK.

    Can anyone advise whether this is OK ? ie. Will I notice any significant performance hit assuming I don't do anything that intensive, or are there any other implications of installing the slower memory that I should consider ?


  2. meta macrumors newbie


    Jun 7, 2008
    Michigan, USA
    You should have absolutely no problem, assuming it's DDR2 RAM. You'll only have slightly reduced performance.

    What do I mean "slightly reduced performance"? It'll benchmark a little worse but it'll probably still seem just as fast as 800MHz RAM would.
  3. st9046 thread starter macrumors newbie

    May 8, 2008

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