[Thinkpad] T20 CPU temp

[Bruce Markowitz]

First of all, I seriously doubt this is a problem. I have personally never
seen a CPU fail on a T series. I use up to 1 gig CPU's
The heat pad is an IBM factory spec.
On later machines I have opened up, they generally use white thermal grease.
You can also use Artic Silver thermal compound, I find it works very well.
Just remember to replace it with white grease if you need to send it in for
warranty service.
HOWEVER, I think you are worrying about nothing.
It really does not generate that much heat. The utility is probably wrong,
or just plain fake.
If the CPU was up around 200 degrees, you would get a nice burn putting your
hand by the vent. While there is warm air exiting the vert, even on a one
gig T22 it is not  BURNING hot.
Worry about something else.
Besides, 700 Mhz CPU's are available for probably $10.00 now, as this is the
slowest CPU (OK, I guess the 650 is slower) made in this form factor. Some
800Mhz just went on Ebay for around $22.00
That would be worth doing for that price!
----- Original Message -----
From: "Shingo Tamaru" <stamaru at andrew.cmu.edu>
To: <thinkpad at stderr.org>; "gwydion" <gwydion at courvilles.com>
Sent: Saturday, December 06, 2003 11:09 PM
Subject: Re: [Thinkpad] T20 CPU temp


> I am grad to hear that the utility worked for you too.
>
> I also checked the CPU temperature using this utility while
> it is running at the maximum load, and was really scared to
> see that it went beyond 90 deg/C (=194 deg/F)! This result
> motivated me to take action to somehow improve the heat
> dissipation capacity.
> As you said, the thermal pad didn't seem to conduct heat
> very well, So I removed it and inserted an aluminum shim in
> between the CPU and the heatsink assy with a little bit of silicon
> grease applied on both side of it for better contact. However,
> it didn't help much for dissipating heat. The CPU temperature
> could still go as nearly high as before. There might be some
> marginal improvement but it doesn't seem a big deal..
> If I want to solve this overheat problem in my T20, maybe
> I need to replace the heatsink with the one designed for T22.
> (Currently, I'm using my T20 always at 700MHz ;-)
>
> If you do something to solve the overheat problem, I would
> like to hear about that.
>
> Shingo
>
> .
> ----- Original Message -----
> From: "gwydion" <gwydion at courvilles.com>
> To: "Shingo Tamaru" <stamaru at andrew.cmu.edu>; <thinkpad at stderr.org>
> Sent: Saturday, December 06, 2003 7:14 PM
> Subject: Re: [Thinkpad] T20 CPU temp
>
>
> > Thanks, that was just what I was looking for.  I've tried this utility
on
> > a t20, t30 and t40, and it seems to work an all of them.  It also
confirms
> > what I thought before - the T20 will overheat if I have the CPU fully
> > loaded for an extended period.
> >
> > Too bad I don't read Japanese.  It would be interesting to play with
some
> > of the configuration options, but he labels are in Japanese characters.
> >
> > Art
> >
> > On Fri, 5 Dec 2003 20:20:09 -0500, Shingo Tamaru
<stamaru at andrew.cmu.edu>
> > wrote:
> >
> > > Hi,
> > > This is really a slow response, but I found the answer for Art's
> > > question quite recently.
> > >
> > > I also upgraded the CPU in my T20 to 1GHz P3, and have been
> > > looking for a utility to measure the CPU temperature. I tried
> > > SiSoftware Sandra and SpeedFan, but they were found not to
> > > work with T20.
> > > (Sandra cannot read the CPU temperature on many notebooks
> > > due to architecture difference with desktops.)
> > >
> > > I recently found a free utility which shows the CPU temperature,
> > > CPU clock, battery charge rate and HDD temperature, named
> > > 'MobileMeter'.
> > > http://www.geocities.co.jp/SiliconValley-Oakland/8259/
> > > Yes, this is Japanese, sorry if you cannot read this page.
> > > The author says that this program is designed only for Japanese
> > > environment and no guarantee for other lauguages. However,
> > > I tried this program in English WinXP and it worked just fine.
> > > Since this program is just a small exe file with no registry use,
> > > this should do no harm to your system even if it doesn't work.
> > > So why don't you try the zip file available from this URL?
> > >
>
http://www.geocities.co.jp/SiliconValley-Oakland/8259/release/0200/mm0200.zi
p
> > > (One caution: This program requires administrator prevaledge
> > > when launching.) If it works, you got a handy tool. If not,
> > > just delete it.
> > >
> > > Hope it works for you too.
> > > Shingo
> > >
> > > ----- Original Message -----
> > > From: "Gwydion" <gwydion at courvilles.com>
> > > To: <thinkpad at stderr.org>
> > > Sent: Thursday, September 11, 2003 12:31 PM
> > > Subject: [Thinkpad] T20 CPU temp
> > >
> > >
> > >> I have a T20 that I upgraded with a 1G P3.  I use it with a
> > >> simulator program that puts a pretty heavy load on the CPU, and
> > >> have had it shut down a couple times due, I think, to
> > >> overheating.
> > >>
> > >> Is there any way to read the CPU temp on a T20?  I want to try a
> > >> couple of cooling ideas to see if they help, but I'd like more
> > >> direct data on the temp than just waiting to see if it shuts
> > >> down.
> > >>
> > >> Art
> >
> >
> >
>
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