From: Keith Rohrer (rohrer@fncrd6.fnal.gov)
Date: 08/14/92


From: rohrer@fncrd6.fnal.gov (Keith Rohrer)
Subject: Re: AMD386 vs. Intel386 & external cache problems
Date: 14 Aug 1992 13:59:32 GMT

In article <1992Aug14.083358.24246@news.th-darmstadt.de> herr@iti.informatik.th-darmstadt.de (Gabor Herr) writes:
>In article <1992Aug13.130554.14600@crd.ge.com>, davidsen@ariel.crd.GE.COM (william E Davidsen) writes:
[deleted]
>because these two chips were the only ones getting hot. And there was another
>cooling effect too: after I was tired of removing and installing the boards in my
I've discovered that, even with a case that has incredibly poor ventilation,
the hard drive and (if the CPU is a hot one) the CPU will be cooler if you
close the case and allow the fan to draw air across them than if you just
leave the case open and let normal air currents try to cool it.
While I was working on my new 386-40 motherboard, within an hour of
use with the case open, the chip got so hot it burned my finger to touch
it. But I could leave the machine on for hours with the cover on,
and the CPU only got too hot to touch for more than a second or two.
I think I may have also cooked a hard drive running it with the cover off
the (main) case.

>case, I just let the machine run open on my desk without the case.
>But nothing of this helped. The tests failed with or without cooling.
Then heat wasn't your problem.

>Gabor
>############################################################################
>Gabor Herr Email: herr@iti.informatik.th-darmstadt.de
>Computer Science Department
>Technical University of Darmstadt, Germany

        Keith
(rohrer@fncrd0.fnal.gov)

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