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iMac Revision A/Bondi Blue RAM question - Mac Applications & Software

iMac Revision A/Bondi Blue RAM question Apple's spec on their web site lists the original iMac Revision A as being able to take up to a maximum of 128MB of RAM, yet just below that info they list that one can install 32Mb, 64Mb, or 128Mb RAM modules.... Since the original iMac came with 32MB in the bottom slot from the factory, would adding a 128MB RAM module in the top slot not push it up above to 160MB total? I'm sure it's just an oversite on someone's part, but anyways...seems a bit confusing. lowendmac.com states that some earlier iMac's ...

  1. #1

    Default iMac Revision A/Bondi Blue RAM question

    iMac Revision A/Bondi Blue RAM question

    Apple's spec on their web site lists the original iMac Revision A as being
    able to take up to a maximum of 128MB of RAM, yet just below that info
    they list that one can install 32Mb, 64Mb, or 128Mb RAM modules....

    Since the original iMac came with 32MB in the bottom slot from the
    factory, would adding a 128MB RAM module in the top slot not push it up
    above to 160MB total? I'm sure it's just an oversite on someone's part,
    but anyways...seems a bit confusing.

    lowendmac.com states that some earlier iMac's have problems with 256MB RAM
    modules while some don't.

    Since my friend has a 32MB iMac Revision A/Bondi Blue and is currently
    running Mac OS 9.2.1, I recommended he get a lot more RAM inside that
    machine to improve performance and not rely so much on Virtual Memory
    which is really slowing things down for him, due to lack of RAM.

    What's the real amount of total RAM I can install inside his machine?
    Anybody with original rev A iMac's have any experience with RAM sizes and
    reliability?

    regards, perry
    Perry Guest

  2. #2

    Default Re: iMac Revision A/Bondi Blue RAM question

    Perry <nonet> wrote:
     

    With all firmware upgrades properly installed (I suppose they are since
    he's running 9.2.1) there should be no problem installing 2x128 MB.
    256 Mb SO-DIMMs are trickier - it appears they have different specs now
    than 2 years ago - when I installed one in a Rev.B iMac with no problem.

    Due to different refresh rates ans a few other things, it may work well,
    work at half capacity, or bring the death chimes at startup.
    Any 133 MHz RAM will most likely only be seen in half.
    A of Rev.A iMacs I'm not sure they work at all.
    Anders Guest

  3. #3

    Default Re: iMac Revision A/Bondi Blue RAM question

    In article <1fzaezz.lbumxx1fd7emaN%se>,
    se (Anders Eklöf) wrote:
     

    This is starting to be a FAQ ;)

    iMac Rev. A and B (bondi blue, tray-loading, IRDA in the left speaker)
    can take at least 2x256BM of PC-100 SDRAM ("low-profile" SO-DIMM). The
    PC-133 variant will be seen as half its capacity in both the Rev.A and
    Rev.B models, regardless of firmware version. I have tried. I have not
    tried with PC-66 256MB chips, since none were available at the time.
    512MB (PC-??) chips existed, but they were very expensive.

    BTW, I am writing this with a Rev.A bondi blue 233MHz that has 2x256MB
    in it, along with a 80GB HDD, a 4MB VRAM chip (of which only 2MB are
    recognized, so do not pay extra for the 4MB version if the 2MB is
    available), Apple Extended ("pro?) keyboard (the volume controls work,
    eject does not), a 21" hitachi CRT connected to some extra card with VGA
    output in the "Mezzanine" slot, Wacom Intuos2 A5 tablet and mouse. I
    plan to maybe upgrade the CD-ROM to a CD-R/RW drive, but then again, I
    think this old box has pretty much come to an end of its usable life
    anyway... ;)

    ..lauri
    l Guest

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