RE: [Thinkpad] CPU Upgrade for 770Z - Anyone Tried PIII 500MHz after Switching 64MB Onboard Memory to 100MHz?

Thanks for the memory info, James.

I thought I'd read about the 512MB maximum in one of your postings before,
but I had always thought it was achieved by using two PC100 256MB modules
(with the onboard PC66 64MB module being bypassed entirely).

So the 770Z has two regular SO-DIMM slots, plus a third slot on the
motherboard. One of the regular SO-DIMM slots can handle only up to a PC100
128MB module, but the other regular SO-DIMM slot can handle a 256MB module.
And the hidden motherboard slot can handle a module up to 128MB. I guess
that means I should hold off on ordering two 256MB modules, and just get a
single one of them instead.

Is this all related to this "one bank" vs. "two bank" business?

Phil.

-----Original Message-----
From: thinkpad-admin@stderr.org [mailto:thinkpad-admin@stderr.org]On
Behalf Of James H. E. Maugham
Sent: September 4, 2003 11:57
To: Brian Hougaard Baldersbaek; thinkpad@stderr.org
Subject: RE: [Thinkpad] CPU Upgrade for 770Z - Anyone Tried PIII 500MHz
after Switching 64MB Onboard Memory to 100MHz?

Brian Hougaard Baldersbaek wrote:

> The ThinkPad 770Z has 3 slots, but 4 banks.
> One of the free slots is a two-bank slot.
>
> I messed up......I can't put three 256MB modules in the 770Z and
> come up with 1024MB !
> Well.......I guess a 512MB two-bank module, made of the right
> chips for the 440BX isn't around in real life.

I've been successful installing a PC100 128MB stick in the slot on the MB in
place of the default PC66 64MB stick that's installed at the factory. But a
known good PC100 256MB stick from a 600X freezes the system dead and it
refuses to boot. I've tried every combination of memory I've got lying
around the shop in the 770Z, but haven't been able to get it past 512MB
total with two 128MB and one 256MB.

A CPU upgrade is on my list of things to attempt on the 770Z, right after my
daughter's wedding! ;-)

One must have one's priorities.

Regards,

James

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Received on Thu Sep 4 13:33:24 2003