Re: [Thinkpad] 1.0 GHz PIII CPU Upgrade 2647-81U

I had a T20 that ran a 1 gig for quite a while. Then I replaced the CPU with
a 700 and sold it. Shortly thereafter the Mobo went bad (no idea why). When
I got it back from IBM with the new Mobo, I got the same behavior as MScott.
So......
It seems that some T20 can do 1 gig, some can not!
----- Original Message -----
From: "gwydion" <gwydion@courvilles.com>
To: <MScott8169@aol.com>; <thinkpad@stderr.org>
Sent: Tuesday, February 17, 2004 2:15 PM
Subject: Re: [Thinkpad] 1.0 GHz PIII CPU Upgrade 2647-81U

> Mike -
>
> Can you get a temp reading with the 1G installed? Bruce may be right
> about some models not taking 1G processors, but I would try to rule out a
> heat problem first. Shingo's utility at
> http://www.geocities.co.jp/SiliconValley-Oakland/8259/ works quite well to
> show the CPU temp. Maybe install it with the 700 in and then swap to the
> 1G and see what it says? The system will shut down somewhere around 95C.
>
> I did go directly to BIOS the first time I booted with the 1G processor in
> my T20, not to change anything but just to see what it said. It worked
> fine, but was prone to overheating until I put the T21 fan assembly in.
> Also, with the T20 fan assembly, there was a gap between the heat sink and
> the processor that required a pad. If yours is the same, it's possible
> you weren't getting much benefit from the heat sink and you were getting a
> quick overheat.
>
> The T21 fan assembly I used worked fine w/o any mods. Aside from some
> slight differences in dimensions, it looked like the main differrence was
> the size of the heat pipe and the shape of the contact area above the
> processor.
>
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Received on Tue Feb 17 14:53:46 2004