RAM Questions for Macbook.

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

  1. htg macrumors regular

    May 2, 2009
    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)?

  2. After G macrumors 68000

    After G

    Aug 27, 2003
    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


    Staff Member

    Dec 10, 2008
    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.

Share This Page