RAM Questions for Macbook.

Discussion in 'Buying Tips and Advice' started by htg, Oct 29, 2010.

  1. htg macrumors regular

    Joined:
    May 2, 2009
    #1
    I'm going to upgrade my RAM in my Macbook. I know that it requires DDR2 SO DIMM 667MHz 200 pin memory, but I have a few questions:

    1)When it says PC 5300, does that always mean that it's 667mhz?
    2)Does it make a big difference if mix RAM from two different brands?
    3)Does it make a big difference if the sizes are different (in my case, it would be a 2GB stick with a 512MB stick)?

    Thanks.
     
  2. After G macrumors 68000

    After G

    Joined:
    Aug 27, 2003
    Location:
    California
    #2
    1. Yes, PC2-5300 = DDR2 667 MHz.
    2. No it shouldn't. But there's a tiny chance they are incompatible with each other. (I had the misfortune to have this happen to me once).
    3. More RAM > matching sticks.
     
  3. Hellhammer Moderator

    Hellhammer

    Staff Member

    Joined:
    Dec 10, 2008
    Location:
    Finland
    #3
    1. Yes, PC-5300 stands for 667MHz DDR2. 800MHz is called PC-6400.

    2. As long as their specs are equal, it shouldn't matter

    3. Dual-channeling would be disabled but that's not a big deal in real world.
     

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