This is just some of the info from
http://www.macgurus.com/beta/showrampage.cgi?mbppcg3desk.html
this is an excellent resource, esp if you dont have a manual/user's guide
(like me). A nice diagram is a key feature. Thanks macgurus.
I've noted the designations of logic board revision as "A,B,C" and
"1,2,3" seem to be interchangeable. You can upgrade by buying a revision 2
rom dimm and changing it; they sell for about $45 on eBay I believe- a bit
steep.
Trying to identify your logic board revision by your video chip doesnt
seem to be useful, as Apple system profiler doesnt tell which video chip you
have. You CAN determine which video chip you have by knowing your revision,
though. My Gossamer rev 1 was originally a 233 mhz. It's now 400 mhz.
NickUtah
> Logic Board Revisions
>
> The three logic board revisions mostly affect the "beige" G3 line (Gossamer,
> Artemis and the AIO). The first revision, Rev 1, is characterized by a
> Rage IIc graphics chip, and no support for IDE slave devices. Also, the first
> revision logic board includes a slower 266 MHz G3 processor chip.
> The second revision, Rev 2, incorporates a Rage Pro graphics chip, and support
> for IDE slaves. This revision includes a newer G3 processor chip
> running at either 300 or 333 MHz. The third revision to the G3 logic board was
> the totally revamped Yosemite Blue and White G3 Logic Board.
> This revision incorporates a Rage 128 graphics chip, IDE master/slave support
> and a G3 processor running at 350, 400, or 450 MHz.
>
> Use the Apple System Profiler, located in the Apple menu, to help determine
> which logic board revision you have. Open Apple System Profiler, click
> the System Profile tab within the window, and then look at the Production
> Information section. Compare it to the table below to determine which
> revision of the logic board is in your Power Macintosh G3 computer.
>
> Note: Rev 3.0 and above G3s can run at 10x multiplier while Rev 2.9 and below
> can only go to 8x. For example in the new G3 Blue and White (Rev
> 3) computer the processor chip can be running at 500 MHz while the system RAM
> is running at 50 MHz, a 10x multiplier. This is useful for older
> systems, such as the "beige" G3 line, with slower bus because they can run
> faster G3s even with their slower bus speeds.
>
> ROM Versions Logic Board Revision
> $77D.40F2 Revision 1
> $77D.45F1 Revision 2
> $77D.45F2 Revision 3
>
>
> Note: All Power Macintosh G3 All-in-one computers and (platinum) Power
> Macintosh G3 300Mhz and 333Mhz Desktop/Minitower computers
> have revision 2 logic boards.
>> Message-Id: <[EMAIL PROTECTED]>
>> Date: Thu, 30 May 2002 04:46:40 -0500
>> From: [EMAIL PROTECTED]
>> Subject: Re: Desktop G3 CPU upgrade questions
>> In-Reply-To: <[EMAIL PROTECTED]>
>>
>> My video chip say Rage II+DVD. Does that mean Rev A, or is it a variant?
>>
>>
>> In response to the welcome remarks of [EMAIL PROTECTED] at 09:14 AM
>> 5/24/02 -0400:
>>> In a message dated 5/24/02 2:24:59 AM, [EMAIL PROTECTED] writes:
>>>
>>> <<
>>> 4. I bought my machine used, so I don't know what color system disk it came
>>> with. How can I tell if I have rev 1, rev 2 or rev 3 motherboard? I can
>>> tell that I have the better voltage regulator module.
>>>>>
>>>
>>> Most /233s were Rev. A; many /266s were Rev. B or C.
>>>
>>> If your video chip is an ATI Rage Pro, then it is definitely a Rev. B or C;
>>> if an ATI Rage II, then it is definitely a Rev. A.
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