pc2700 ram in a g5 1.8 rev a?

Discussion in 'PowerPC Macs' started by ph0rk, Aug 29, 2007.

  1. macrumors 6502

    Joined:
    Oct 22, 2003
    Location:
    NC
    #1
    I happen to have about a gig of pc2700 ram that is unused (decommissioned game pc), and the g5 is starting to feel low on memory (thanks, azureus).

    The ram works, the system boots, is there any compelling reason not to use it?
     
  2. macrumors G5

    CanadaRAM

    Joined:
    Oct 11, 2004
    Location:
    On the Left Coast - Victoria BC Canada
    #2
    Yeah, the 1.8 requires PC3200, so either
    1) it just won't boot because the Mac will detect a non-compliant SPD
    2) the RAM iwould be run at higher than rated speed (increased chance of error and failure) or
    3) if it runs, the entire machine would be dragged down to 333 MHZ memory speed.

    Not worth the risk IMO

    The only G5 that supports PC2700 is the single 1.6
     
  3. thread starter macrumors 6502

    Joined:
    Oct 22, 2003
    Location:
    NC
    #3

    It boots and runs, and I haven't seen any kernel panics, etc. "Dragging the machine down" to 333 mhz memory would still be preferable to constant pageins/pageouts after a few hours of use. The system recognizes the ram as pc2700, too.

    Besides, its a 1.8 ghz g5, its not like I'm shooting for maximal performance here, just something that can tolerate greater than 20 tabs in firefox. I currently have 1.5 gigs of pc3200.
     

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