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  1. #1
    rlx37g5
    Guest
    Question about installing ram on the G5
    I have 256Mb RAM (factory) in my G5 now, and I would like to upgrade to 768Mb. Do I absolutely have to buy two 256s or can I just install one 512?
    Thanks

  2. #2

    deus_ex_machina's Avatar
    Member Since
    Aug 06, 2004
    Location
    Tejas
    Posts
    1,713
    Specs:
    2GHz Mac Mini 2GB RAM 160GB 10.6.2 | MDD DP 1.25GHz G4 1.5GB RAM 10.4.11 | 233MHz iMac G3 10.3.9
    you can install just a 512 stick if you'd like. I'd make sure the RAM is totally compatible...I've heard the G5 is picky about its RAM

  3. #3

    corysw's Avatar
    Member Since
    Dec 22, 2004
    Location
    Earth.
    Posts
    208
    Specs:
    G5 1.8GHz, 3GB RAM; Macbook Air
    That's what I did, but it doesn't seem to be recognizing it. It's a 512Mb 184-pin 400MHz PC3200. That's the kind the G5 uses, right?
    (I started this thread but accidentally under the wrong user name, it's still me.)

  4. #4


    Member Since
    Apr 11, 2005
    Location
    Cleveland Ohio
    Posts
    398
    Specs:
    Dual G5 powermac
    is this a dual? If so, you will need to by 2x of everything, hence dual channel.

    Seems to me, if a ramstick is bad in a single G5, it should error correct? Or is that just the PC user in me talking?

  5. #5
    warrenbert
    Guest
    You need to install pairs, even in the single processor G5s. All of the G5s use dual-channel memory, the single processor models use a slower FSB.

    http://docs.info.apple.com/article.html?artnum=86414

  6. #6

    James's Avatar
    Member Since
    Nov 26, 2004
    Location
    Pocola, Oklahoma
    Posts
    819
    Specs:
    Mac Pro 2.66 - 4 Gig Ram, iMac G5 2 Gig ram 20"
    Quote Originally Posted by corysw
    That's what I did, but it doesn't seem to be recognizing it. It's a 512Mb 184-pin 400MHz PC3200. That's the kind the G5 uses, right?
    (I started this thread but accidentally under the wrong user name, it's still me.)
    I think the pm 1.6 takes ram in pairs doesn't it? that is probably why it is not recognizing the single 512 chip.
    Mac Pro Intel 2.66 - Quad Core - 16 Gigs Ram - 10.11.2 - 30" Apple Monitor
    iMac 24" 2 gigs ram - MacBook Pro

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