Pro 13 ram upgrade one stick question

Discussion in 'MacBook Pro' started by david19801, Oct 26, 2012.

  1. david19801 macrumors member

    Joined:
    Mar 18, 2012
    #1
    Hello,

    I have a macbook pro 13 2012 with 4gb of ram. I want to upgrade to 16 someday but i want to see if i need less first.

    Is it possible to buy just one 8gb stick and use it with the 4gb stick of ram to give me 12 gb ram? Someone told me this is a bad idea because of the channels...but I didn't understand him. is this true? Or will it really be the same as 12gb?
     
  2. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #2
    Yes, you can certainly mix RAM sticks of different capacities.

     
  3. david19801 thread starter macrumors member

    Joined:
    Mar 18, 2012
    #3
    One more question, how can I tell the macbook to use the 8gb first or will it know automatically which is best to use?

    And final question. Will it see 8gb + 4gb as a total of 12gb or 8gb? I mean will it ignore the extra 4gb on the 8gb stick because it does not see that on the other stick?
     
  4. PapaVBnMOMO macrumors member

    Joined:
    Aug 11, 2012
    Location:
    Michigan
    #4
    What u actually have in there is 2X2gb so u won't have 12 but 10.
     
  5. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #5
    As PapaVBnMOMO said, your 4GB is composed of 2x2GB, so you'd remove one 2GB stick and replace it with one 8GB stick, giving you 10GB. No, it won't ignore any of the memory. You don't need to worry about how Mac OS X uses the available RAM, as it manages that automatically.
     

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