Question about 3GB RAM limit on old iMacs

Discussion in 'iMac' started by Norkusa, Mar 29, 2012.

  1. Norkusa macrumors member

    Norkusa

    Joined:
    Nov 25, 2010
    Location:
    Grand Rapids, MI
    #1
    I currently have a 20" late-2006 iMac and plan on upgrading as soon as the new iMac's come out later this sping/summer. I have 2 GB of RAM installed (1GB x 2) but I'd like to have 3GB total because I need to use Lightroom 4 and have it running at bearable speeds.

    Is it better to have an even amount of memory in each slot than an odd amount? Was planning on getting a single 2GB stick so I'll have 2GB + 1GB, but I read somewhere that it runs better when you have the same amount in each slot. Is that true?
     
  2. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #2
    Your iMac supports 4GB of RAM, with some limitations:

    iMac "Core 2 Duo" 2.33 20-Inch Specs (Late 2006, BTO/CTO, iMac5,1, A1207, 2118) @ EveryMac.com

    You can find specs on all Apple products, including maximum RAM:
     
  3. Intell macrumors P6

    Intell

    Joined:
    Jan 24, 2010
    Location:
    Inside
    #3
    While you can install 4Gb, you'll only be able to use 3.3Gb of it. You'll have a slightly faster system if you install a matched pair of 2x2Gb sticks.
     

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