No one seems to notice, but the RAM is VERY temperature sensitive, more so
than the BX chip would be (and guess what? the BX chip is situated right
next to the RAM).
Additionally, the overall layout of the board is VERY bad for cooling
purposes, the BX chip is in the shadow of the RAM and the AGP board
(incidentally, is anyone cooling the AGP board - you can could cook your
breakfast on some, the voodoo banshee, in particular).
I found that my board was very unstable until I addressed ALL the above
points, since then it's been great - two 366's overclocked to 550.
Rgds,
Derrick.
It's not worth being Welsh unless you really mean it. Yakida.
----- Original Message -----
From: Helge Hafting <helge.hafting@idb.hist.no>
To: <linux-kernel@vger.rutgers.edu>; <guru@swami.pcguru.com.au>;
<kaos@ocs.com.au>; <kabi@fi.muni.cz>
Sent: Friday, December 17, 1999 9:33 AM
Subject: Re: Dual Celery on BP6
> These APIC problems happen when the board runs a bit hot. And no, the
> sensors won't show this because it is the chip with the green heatsink
> that overheats, and the board temp sensor is somewhere else.
>
> A high bus clock (more than 66MHz)
> is usually the problem, even if the processors themselves aren't
> overclocked.
>
> I have seen a report about how the problem disappeared when the owner
> replaced the green heatsink with an extra cpu fan. He also found that
> the green sink didn't work too well, it was poorly mounted on the chip.
>
> So I recommend a cooling fan or at least some thermal compound under the
> green thing. And good air circulation through the case and a cool room.
>
> I see a lot more of these errors when the machine runs hot than when
> it runs cold. Nothing bad seems to happen though.
>
> Helge Hafting
>
> -
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