Underclocked RAM better or worse than original clockspeed

Discussion in 'MacBook Pro' started by Astroboy907, May 19, 2012.

  1. Astroboy907 macrumors 65816


    May 6, 2012
    Spaceball One
    I am trying to get some 8gb 1066 mhz RAM to max out my MBP. I have a $50 gift card at B and H, so I was going to order RAM from them. I see that I can get 1600 mHz RAM for $10-15 less than 1066 mHz RAM. Will there be problems using a higher RAM speed? Will it create performance issues? Would it be slower using 1600 mhz rather than 1066 mhz? Please advise. -A907
  2. mikeo007 macrumors 65816

    Mar 18, 2010
    I have read about some problems with MPBs running faster RAM than the motherboard supports. The RAM speed should just fall back to the motherboard's maximum, but I know there have been problems reported in the past.
  3. maril1111 macrumors 68000


    Mar 14, 2010

    I wouldn't use faster ram as it either won't work or will limit down to 1066 anyways as your bus is slower than your ram.

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