on 4/3/03 2:57 PM, John McGibney at [EMAIL PROTECTED] wrote:

> Also keep in mind that some machines have problems when newer 128meg chips
> are mixed with older 64 meg and smaller chips. The refresh rates seem to
> cause all sorts of errors. Also some of the 128mb sticks are not compatible
> with G3/G4 upgrades. I'm sure the speed of the G4/800 upgrade is
> exacerbating things even more.
> 

When I first installed my new G4/700 card and had nothing but trouble, my
first assumption was that it would be one of the problems that had been
mentioned; my memory was interleaved, and I had a wide mix of new 128 meg
memory modules with lots of old 8 and 16 meg modules (944 megs total, in my
12-slot 9500).  But it turned out not to be any of those; apparently some of
the memory wasn't seated well enough for the liking of the G4 card, which
worked just fine with the previous XLR8 G3/250 card.  After all memory was
removed and reseated (even the old 8 and 16 megs along with the new 128
megs), the problems went away.

I even decided to try my luck and re-interleave the memory, and that does
not seem to cause any problems, either.   So the only problem appeares to
have been the proper seating of the memory, not the mix I have of very old
and new memory, nor having the memory interleaved.

---Alex

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