Question about ordering a 2GB stick of RAM

Discussion in 'MacBook Pro' started by ppc_michael, Jan 8, 2008.

  1. ppc_michael Guest


    Apr 26, 2005
    Los Angeles, CA
    I bought two 1GB sticks of memory for my MacBook Pro 2.33 GHz Core 2 Duo. I currently have 2 GB, and I wanted 4 GB (this was before I knew about the 3.3 cap).

    So when the new sticks came, I excitedly opened the back to find that both the expansion slots were already occupied with 1 GB sticks. I had just assumed it would be "built in" memory or something, not taking up my expansion slots! So I'm a little peeved about that.

    But anyway my question: I'm returning the 2 new sticks. Do I buy one 2GB stick instead, so that I have a 2GB and a 1GB altogether? I know you're supposed to have matched pairs so will this effect performance, or is that not what they mean by matched pairs?

    Also do you think moving from 2GB to 3GB is significant enough to be noticed? Things have really slowed down since I upgraded to Leopard so I'm assuming it's a RAM thing. Do you think it'll help?

    Thank ya.
  2. gav1v macrumors newbie

    Jan 5, 2008
    somebody's got a thread witha link to 2x2gb sticks for $80 which seems well cheap to me.
    Whats this 3.3gb cap you speak of?
  3. letswastetime macrumors regular

    Feb 11, 2007
    Earlier Core 2 Duo machines can recognize a potential 3.3 GB (with 2 x 2 GB installed... the top 700 MB is wasted, so the practical maximum is 3 Gb with 1 x 1 Gb and 1 x 2 Gb). This is a hardware limitation.

    * With 4 GB installed, these machines will report 4 GB in System Profiler, but the operating system will only use 3.3 GB.


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