iMac G5 RAM Question

Discussion in 'Macintosh Computers' started by Jovian9, Nov 8, 2005.

  1. macrumors 68000

    Jovian9

    Joined:
    Feb 19, 2003
    Location:
    Planet Zebes
    #1
    My RevA G5 iMac was recently replaced with a RevC 1.9GHz iMac G5 by Apple. When I first got my iMac G5 (RevA) I spent nearly $200 on a 1GB stick of RAM. Will this RAM work in my new iMac G5 (RevC)? If so will there be much of a performance impact by using the less capable RAM (1GB) with the pre-installed newer RAM (512MB)? Thanks!
     
  2. macrumors 6502

    Joined:
    Apr 29, 2005
    #2
    I don't think you are compatable seeing as the Rev C uses the DDR2 stuff.
     
  3. Moderator emeritus

    robbieduncan

    Joined:
    Jul 24, 2002
    Location:
    London
    #3
    Is RevC the current (built in iSight) one? If so then the RAM will not work as the current iMacs use DDR2 and the old ones use plain old DDR. The two are completelly incompatable.

    If the RevC is not the current one then you should be OK.
     
  4. dcv
    macrumors G3

    Joined:
    May 24, 2005
    #4
    No the Rev A/B DDR RAM isn't compatible with the new Rev Cs

    CanadaRAM wrote an excellent technical review of the new iMacs here, hopefully this should answer your question more fully.
     
  5. thread starter macrumors 68000

    Jovian9

    Joined:
    Feb 19, 2003
    Location:
    Planet Zebes
    #5
    Thanks for the info. I was hoping that it would be compatible but that it would just reduce the newer RAM to run at the older RAMs ability (if that makes sense).
    Thanks!
     
  6. macrumors member

    Joined:
    Jan 29, 2003
    Location:
    NJ
    #6
    Nope, won't even fit in the same slot, DDR2 has a different number of pins.
     

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