Mixing RAM sizes

Discussion in 'MacBook Pro' started by jaws01, Nov 10, 2006.

  1. jaws01 macrumors member

    Joined:
    Nov 3, 2006
    #1
    I have a macbook 2.0GHz, 512MB ram. Factory specs. I want to upgrade to a single stick 1GIG ram, but I would like to keep one of the 256MB ram to have a total of 1.25GIG ram. Is this ok to do? Are there any side effects?

    Thanks!
     
  2. jsw Moderator emeritus

    jsw

    Joined:
    Mar 16, 2004
    Location:
    Andover, MA
    #2
    It's perfectly OK. Matched RAM runs a tiny bit faster, but more RAM almost always trumps paired RAM. Go for it. And since you wouldn't be pairing the 1GB stick, there's no reason whatsoever not to keep the extra .25GB.
     
  3. WildCowboy Administrator/Editor

    WildCowboy

    Staff Member

    Joined:
    Jan 20, 2005
    #3
    Having matched RAM will provide you with the best possible speed, but certainly bumping to unmatched 1.25 GB from matched 512 MB will give you a huge boost in performance.
     
  4. richard4339 macrumors 6502a

    richard4339

    Joined:
    Sep 6, 2006
    Location:
    Illinois
    #4
    My MBP is running a 1x1gb stick and a 1x256 stick, and it runs fine. It seems slightly slower in my opinion than the 1x1gb alone, but things tend to run more smoothly.
     
  5. farqueue macrumors 6502

    farqueue

    Joined:
    Jun 18, 2006
  6. Eidorian macrumors Penryn

    Eidorian

    Joined:
    Mar 23, 2005
    Location:
    Indianapolis
    #6
    You'll be fine. Intel® Flex Memory Technology will allow for near full dual channel speeds on memory sticks of different sizes.
     
  7. jaws01 thread starter macrumors member

    Joined:
    Nov 3, 2006

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