iMac White 24" Maximum Ram?

Discussion in 'iMac' started by sukanas, Jun 9, 2008.

  1. sukanas macrumors 6502a

    sukanas

    Joined:
    Nov 15, 2007
    #1
    i know the website says 3gb
    but like the mac mini

    if i put in 2x2gb ram, will it recognize it a little more than 3gig?
     
  2. sfroom macrumors regular

    Joined:
    Apr 30, 2008
    #2
    I had 2 x 2 GB in my white iMac before I sold it. The computer "recognizes" all 4 GB, which is to say that "about this mac" displays 4GB installed.

    Activity monitor also displays 4GB, however, if you add up the "wired"/"active"/"free" etc...the math doesn't add up to 4.

    My understanding is that the system will actually address 3.3 GB.
     
  3. ChrisA macrumors G4

    Joined:
    Jan 5, 2006
    Location:
    Redondo Beach, California
    #3
    The OS will use not more than 3.3GB .7 will go unused. But I think you gain a little because with matched RAM sticks the system can do double wide memory access, I think the speed gain from that is about 6%
     
  4. tuxtpenguin macrumors regular

    Joined:
    May 19, 2007
    Location:
    TX
    #4
    Like the above posters said, you can put in 4 GB but it will only address roughly 3.3 but the matched pairs will help.
     

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