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  1. #1


    Member Since
    Jan 18, 2008
    Location
    United Kingdom
    Posts
    18
    Specs:
    iMac G5, White, 1.8GHz Power PC
    G5: Memory recognized incorrectly
    Hi, I hope someone can help me.

    I've just installed 4 x 512MB inside a 1.8GHz Power Mac G5. Yet for some reason, it is only recognizing each stick as 256 MB, making the total RAM recognized 1GB. Which isn't the end of the world, but not what I was aiming for! I have 2 from Kingston and two from Crucial. Before, the Mac had the 2 x 128MB it came with along with 2 512MB yet it only recognized the total memory as 768MB.

    What am I doing wrong?

    Thanks in advance!

  2. #2

    Soulwar's Avatar
    Member Since
    Jan 27, 2008
    Location
    Estero, FL
    Posts
    1,515
    Specs:
    iMac 17" 1Ghz G4  iPhone 3G  10.5.5
    Did you install in pairs? Double check the specs...
    http://www.everymac.com/systems/appl...ram-slots.html
    http://www.everymac.com/systems/appl...ac_g5_1.8.html


    Check System Profiler (applications/utilities) or scan your system and make sure it's being recognized.
    Crucial Memory Upgrades for Macs - Apple Memory
    When all else fails, try everything!
    The Rep System and you.
    Life's a joke...If you're not laughing, then you didn't get it.

    June 2008


  3. #3

    mcjacksonnelson's Avatar
    Member Since
    Jan 31, 2008
    Location
    Chicago
    Posts
    375
    Specs:
    2.53 Intel Core Duo Mac Mini; 4g RAM; 350g HD, OS 10.6.3
    i believe that PowerMac G5's have to have the memory installed in a certain order (i.e. the slots are labeled 1, 2, 3, 4.) so if you buy pairs of RAM, they have to go in corresponding slots. (i.e. if you buy 4 sticks of RAM they have to go in slots 1:1, and 2:2) i don't think you can put them all on one side. maybe double-check and see if they are installed correctly. hope i explained it good enough.
    "You can't fight in here, this is the war room!"

    CONSTRUCTIV Art & Design

  4. #4

    Soulwar's Avatar
    Member Since
    Jan 27, 2008
    Location
    Estero, FL
    Posts
    1,515
    Specs:
    iMac 17" 1Ghz G4  iPhone 3G  10.5.5
    Quote Originally Posted by mcjacksonnelson View Post
    i believe that PowerMac G5's have to have the memory installed in a certain order (i.e. the slots are labeled 1, 2, 3, 4.) so if you buy pairs of RAM, they have to go in corresponding slots. (i.e. if you buy 4 sticks of RAM they have to go in slots 1:1, and 2:2) i don't think you can put them all on one side. maybe double-check and see if they are installed correctly. hope i explained it good enough.
    What mcjacksonnelson is referring to.
    http://docs.info.apple.com/article.html?artnum=86414
    When all else fails, try everything!
    The Rep System and you.
    Life's a joke...If you're not laughing, then you didn't get it.

    June 2008


  5. #5

    mcjacksonnelson's Avatar
    Member Since
    Jan 31, 2008
    Location
    Chicago
    Posts
    375
    Specs:
    2.53 Intel Core Duo Mac Mini; 4g RAM; 350g HD, OS 10.6.3
    heh, yes. thanks soulwar.
    "You can't fight in here, this is the war room!"

    CONSTRUCTIV Art & Design

  6. #6


    Member Since
    Jan 18, 2008
    Location
    United Kingdom
    Posts
    18
    Specs:
    iMac G5, White, 1.8GHz Power PC
    Thanks all, it was my first time inside a Mac, so it's likely that I may have put them in the wrong place! I'll take a look at those links and have a look at the order of the sticks and let you know how I got on.

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