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  1. 10-09-2009, 10:51 PM #1
    aVeD is offline

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    Oct 09, 2009
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    Upgrading DIMM slots?
    I just got an old PowerMac G5.
    It's this one listed here:
    Apple Power Macintosh G5 2.0 DP (PCI) Specs (Early 2005 - M9747LL/A) @ EveryMac.com

    I opened it up for the first time today...I'm upgrading the hard drive and ram in the next few days...

    Anyways, I noticed that there are 4 slots available for RAM.

    There are 2 groups of spaces for these slots.

    It looks like this:
    4 - No slot
    3 - No slot
    2 - Empty slot
    1 - 512mb RAM

    1 - 512mb RAM
    2 - Empty slot
    3 - No slot
    4 - No slot

    So I got to thinking, why are there numbers 3 and 4 listed even if there are no DIMM slots for RAM?

    Is it possible to install 4 extra slots so I can upgrade it to 8gb instead of just 4gb?

    I've done a lot of work with PC's, never with a mac.

    Opening this up for the first time today was like a dream come true.
    Finally...organization underneath the case!

    Thanks for any input/help!

    -aved
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  2. 10-10-2009, 06:15 PM #2
    harryb2448 is offline

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    Nov 28, 2007
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    Imac 27", 3.3GHz, 512 flash storage, 16GB memory, macOS Sierra.
    Sounds like either the slots have failed or the logic board is on the way out. Have you got the system install discs in order to run Apple Hardware Test from disc one?
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  3. 10-10-2009, 09:22 PM #3
    pigoo3 is offline

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    Quote Originally Posted by aVeD View Post
    So I got to thinking, why are there numbers 3 and 4 listed even if there are no DIMM slots for RAM?
    It's because Apple launched various models of the Powermac G5 with the dual 2.0ghz processors...but used the same logic board.

    1 of these models only had 4 ram slots, and another model had 8 ram slots.

    HTH,

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
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  4. 10-10-2009, 09:41 PM #4
    aVeD is offline

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    Quote Originally Posted by pigoo3 View Post
    1 of these models only had 4 ram slots, and another model had 8 ram slots.

    HTH,

    - Nick
    Is it possible to add more?

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  5. 10-10-2009, 10:24 PM #5
    pigoo3 is offline

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    Quote Originally Posted by aVeD View Post
    Is it possible to add more?

    -aved
    Do you have the skills to solder in 4 more DIMM brackets without destroying the logic board?

    Of course this would be after you completely disassemble the G5 to get the logic board out.

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery
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  6. 10-10-2009, 10:31 PM #6
    dtravis7 is offline

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    iMac 2010 27" QuadI7 OSX10.11, iMac 2008 OSX10.11, MBP Late2011OSX10.11 , iPad Air, iPhone 3GS
    Please don't take this as an insult!

    If you can actually solder in 4 more DIMM slots on that G5 Logicboard without ruining it you will forever be my hero! In my computer life I have desoldered Chips from even the delicate Commodore 64 board (Some used no sockets at all) and made them work perfectly, but I really doubt you can pull this off. It would be like hand soldering a CPU socket.

    All the holes on that board are full of solder. If I were you I would leave it at 4GB!
    ...Dennis

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