1800+ on volcano7 should be much cooler than 50c, there is a chance that
either mobo didn't supply correct core voltage to CPU (ASUS mobo usually
supply 0.05v over the top of 1.75, latest BIOS may fix it, but many won't)
or the heatsink didn't sit properly. check with ASUS prob, if you see core
voltage hit 1.79 (or 1.8) all the time, you may need to adjust voltage in
BIOS (down to 1.70, it will be 1.75 then). As you know, volcano7 is heavy,
but the clip to hold only use one clip on socket, that in my opinion, can't
hold the heatsink for long, also, the weight of heatsink will make the
contact with CPU poorly. I usually use some cable tie to help to hold
volcano7 to its place (a bit hard to explain, basicaly, you use power supply
case as a support point, use some cable tie to help hanging heatsink to it).
the same trick can help volcano7+ too.

I also believe your 2x chasis fans didn't do their job, you should check
their function, a good airflow inside case is very important.  I'm using 2x
50CMF 8cm case fans with one slow (came with my case) 20CMF (my closest
guess, might be 15CMF) fan. even my A7V mobo gives 1.8v core all the time
and I'm overclocking my Geforce3 card, everything still kept in cool
condition. the heatsink I use is a WBK68II, to reduce noise (but gave up
cooling performance).

Jun Qian

----- Original Message -----
From: "Mike Whalen" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, May 07, 2002 2:30 AM
Subject: [PCBUILD] Troubleshooting overheat matters...


> Hiya folks,
>
> I recently built a system based on an ASUS board and am pretty sure I'm
> running into a heat problem.
>
> Basically, the system runs fine, without incident, when the side panels
are
> removed. After running 20 mins or so with the panels on, the system will
> exhibit extreme sluggishness, spontaneous reboots, trailing graphics when
> windows are moved, and BSODs. The only BSOD I recall seeing is
> PAGE_FAULT_IN_NONPAGED_AREA.
>
> The CPU, an Athlon 1800+ is not overclocked and is cooled by Arctic
thermal
> paste and a Volcano 7 which slows down and speeds up in reaction to
overall
> system temp. The top temp on the CPU under load is 50c.
>
> The top mainboard temp, according to BIOS, is 30c.
>
> There are two chasis fans, one in front and one in back. RPMs are reported
> on the rear fan.
>
> The ASUS software probe reports the same numbers, although when the case
is
> on, the chasis fan RPM drops to zero, even though the fan is still
running.
>
> The OS is Win2k. I have run several SiSoft Samba tests and have not been
> able to get through more than four. I believe the test hangs on the memory
> portion.
>
> I suspect at the moment that either the video card (GeForce2) or the RAM
> (DDR 2100) is overheating. Neither of these are protected very well from
> heat. The vidcard has a sink, no fan. There are no spreaders on the RAM.
>
> I have a can of anti-static cooler that I plan to use to isolate the
> components in order to find the overheating component.
>
> I am not using round IDE cables and have stuffed all the excess cables
into
> the open 5.25 bay. (The system has one HDD, two CDROM devices, and a
> floppy.) Still the chasis fans don't really provide cooling to the upper
> portion of the case. There is almost a straight shot between the front and
> back fans. This would hit the video card to some degree, but would never
> touch the RAM.

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