On Thu, Jun 15, 2000 at 05:01:18PM +0200, Arthur Douwes wrote:
> I noticed that the temperature warning settings in the BIOS were set to 65C
> and that the BIOS default was 80C. So I changed it to 80C.
If your case temperature ever goes to eighty, your motherboard will be too dead
to give a warning =). The maximum hardware can stand is 60 C, above 50 C it
begins to affect it badly. Usually, computers bought from brand-name companies
have experts that check air flow in a computer, so one hardly sees this
problem. But if your temperatures are regularly in the high 40s to low 50s,
you should seriously consider getting better cooling. (The highest my case
temp goes after 8 hours of BurnBX || BurnMMX (which will get your temperatures
as high as possible) is around 46 C, my CPU temps high is around 43 C)
At idle CPU temps are around high 20s
> Next I installed the lm_sensors modules and monitored the CPU temps.
> When running Seti and doing blur filters in Gimp the temp goes up to 50C
> with an open case. I can imagine that with a closed case and some other
> jobs running the temperatures could go even higher.
With good cooling, an open case should actually make your case temperature
hotter because you don't have air flow going.
>
> What is a normal temperature for the CPUs idle and with a load of 1?
Load of 1 isn't the highest you can get =), I've gotten load as high as 14.
> What should I set in the BIOS settings for a threshold?
50 C if you're paranoid, 55 C is a good number
> Is it advisable to install more ventilation in the box and what kind of vent?
Your power supply doesn't seem to be exhausting air that well. There should be
two case fans, one in the front of the case blowing to the power supply (make
sure no cords are in the way so air can go through), and the air the power
supply exhauts. If you bought a cheap case, you might want to consider a new
power supply, especially if your wattage is in the low-mid 200s, so you can take
out that reason for crashes. I personally have a 350 W power supply, but
300 W should be sufficient unless you have a SCSI array.
P.S. lm-sensors specifies certain temperatures where it can beep if it goes
out of that range. Defaults at 50 C hysteresis (if you don't know what that
means, think of the word "hysteria"), and the _limit_ 60 C. I have, however,
known some people to run their temperatures at around the high 50s... it is
really not suggested =)
Oh, and if you plan to overclock, make sure you get cpuburn (search freshmeat).
BurnBX will attempt to create an error by overloading your stuff. It has
helped me a lot to determine what overclocked settings I can do, and what I
shouldn't. Your system may _seem_ stable at whatever setting you have it on,
but every few hours or so you get an error that causes a crash.
Jonathan Hseu
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