At 20:45 -0700 08/07/2005, positron57 wrote:
I'm sorry for the length of my tale, but I wanted to provide all the
background so I could ask the
list if there is any _technical_ reason why I shouldn't send this
card back. Honestly I don't know
if I should ask for a replacement or my money back. I have
"invested" about 16 hours over 4 days
trying to get this to work. I don't want to go through this again. Help!
Hi Dave,
I am not familiar with the software used with PowerLogix products.
However, there are a couple of general rules which suggest to me that
the internal L2 cache on the chip on your upgrade is bad. Keep in
mind that I'm generalizing here, so my conclusion may be out of date
or otherwise inapplicable for the PPC750GX.
Rule 1: The L2 cache isn't active until software settings activate
it. (Actually there's a register that must be written, but it
depends on software to do the writing.)
Rule 2: If the CPU upgrade crashes when you try to load the
corresponding software, then the L2 cache is probably defective.
So my back-of-the-envelope guess is that you have a card with a chip
that has a bad integrated L2 cache.
This all goes out the window, if the L2 cache is active when you're
running at 800 MHz. But I'd still send it back. If it were me, I'd
get an exchange and try again, but if it doesn't work out of the box,
give up. Perhaps have a fresh install of OS 9.1 on a volume that
doesn't already have an OS installed, so you can test quickly and
easily with few variables when you receive the replacement.
Oh, have you tried it with your PCI cards (except video, of course) pulled?
Thank you for sharing your detailed experiences. I'm continually
tempted by the fast Powerlogix G3 products, especially since the
750GX has the larger L2 cache than the FX.
Jeff Walther
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