The Pentium that comes with a 600E goes up to 400 MHZ, can not use the CPU
from a 600X with speedstep. That much I remember.
----- Original Message -----
From: "Philip Kiff" <[email protected]>
To: "'Bruce Markowitz'" <[email protected]>; "'Simon Royal'"
<[email protected]>; "'ThinkPad Mailing List'" <[email protected]>
Sent: Tuesday, March 02, 2010 10:29 AM
Subject: Re: [Thinkpad] TP600 & MMC-1
Bruce wrote on March 1, 2010 23:49 (EDT):
Now wait - I don't recall that you can go over 300 Mhz in a 600, just
in a 600E. But then, I forget a lot of shit.
Mmmm...well, I haven't actually upgraded a 600 or a 600E myself and am
just
reporting what I've read.
I gather that the 600 had at least two different motherboards. One of them
shipped with a Pentium I MMX. Another one shipped with some flavour of
PII.
I assumed that the PII version would accept a PII 400MHz, but I may be
wrong
there, as there may be some kind of cache incompatibility. The board that
shipped with a Pentium I, I think was not upgradable past the Pentium I
300MHz as Bruce suggests.
Simon (the OP) didn't actually say whether he currently has a Pentium I or
Pentium II, all he said was that he had a 300MHz.
Phil.
Bruce wrote on March 1, 2010 18:31 (EDT):
If it is a 600 it is MMC-1, 600E is MMC-2, they are not compatible
with each other. 300 is as fast as MMC-1 goes.
Phil wrote on March 01, 2010 11:36 PM (EDT):
MMC-1 goes up to PII 400MHz. Bruce is probably thinking of Pentium
I's which do indeed have a max of 300MHz on an MMC-1 board.
Some people find that the PII 400 runs a bit hot so the 600 and
770E/ED machines can run into heat issues. When purchasing, be sure
not to get a Celeron 400MHz on an MMC-1 board, as those are different
beasts and are not exchangeable with Pentium-based MMC-1 boards. By
the way, the CPUs themselves that sit on the MMC-1 and MMC-2
daughterboards are not replaceable (except by skilled professionals
with cool tools).
Phil.
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