[ale] k7s5a motherboard

[Geoffrey]

Dow Hurst wrote:
> You should feel that 13 degree difference if the heatsink was that warm, 
> however, the CPU thermocouple is in the CPU not the heatsink so is 
> misleading to interpret that temp as the heatsink temp.  The mass and 
> temp difference between the CPU and the heatsink is considerable so your 
> energy is dissipated by raising the temp of the heatsink by a small 
> amount.   I haven't measured the current temp on the CPU of my Athlon 
> XP1800 but will this evening.  I know my top temp on the CPU was 65 C 
> and the the current temp with original heatsink was about 55-58C.  That 
> was all BIOS based info.  I do know that AMD had on their site a PDF of 
> how to build a case for proper airflow in their support section.

Sounds like an explanation from a Chemist, oh, wait.... :)  I could tell 
it was a bit warm relative to my skin, thus I suspect the temp value is 
accurate.

Since
> your BIOS is wanting to shut off the CPU at 45C you might need to see 
> about upping that value instead of trying to cool the CPU more.  You 
> might be at the normal running temp and the BIOS has too low a value for 
> the shutdown temp.

Actually, all the bios is doing is listing the temp, it doesn't have a 
shutoff value, sofar as I can tell, that is.  My Asus board did.  This 
one, when you go to 'system monitor' just lists the current values.

The upper end I've got of 45C came from a web site put together by 
someone who has the same board as well as the example docs that came 
with lm_sensors.  There was a specific entry in there for this chipset, 
therefore I assumed it was correct.  I've searched all over the amd site 
but was unable to locate any specific temp info.

I also looked for quiet PCs and suppliers of parts.
> Got good info on fan dB numbers.  Anything under 32dB is considered very 
> quiet.  One large quiet fan pulling air out of the case can it some 
> instances be the best config.  A fan directly on top of the case instead 
> of the back can be very good.  The Zalman fan has an adjustable RPM so 
> you can get it down to 26dB.  Then a high quality low noise certified 
> powersupply with the double fan input/exit format will pull the air out 
> of the case vertically and push it out the back.  A fan pulling air into 
> the case can overpressure the case and cause improper airflow patterns. 
> I'd love to study this more since Dell has optimized their fan/case 
> design to create a incredibly silent computer with enough airflow to 
> keep the CPU cool.

Yeah, originally I had a single fan in the front/lower pulling air in 
and then relied on the PS fan at the top to send it out again.  I added 
another fan on the back pulling air out right below the ps.  I was then 
concerned with too much pull out and not enough pull in.  This can cause 
  your power supply to overheat because it's not getting the airflow it 
did before I added the other fan.  That's why I thought about adding 
another 'in' fan then I'd have two in two out. Of course size rpm and 
stuff of the fans all matter as well.
> 
> What is your CPU?

xp 1700

> 
> I have a video card fan, which was a loud fan for it's size, a chipset 
> fan, a CPU fan, and two fans in the power supply.  Since I got a 300 
> watt dual fan powersupply that wasn't low noise certified, it is the 
> loudest fan noise coming from the case.  It is a better quality 
> powersupply so isn't obnoxious.  The Zalman CPU fan is totally silent 
> along with the chipset fan.  The video card fan died so I removed it and 
> readjusted the Zalman fan to cover both the CPU and video card.  Works 
> just fine.  I'll get you some numbers tonight.

Thanks.  I'm not so much concerned with the noise as I am the temp. 
This machine sits on the other side of a wall, so the sound is minimal. 
  I will eventually sound proof that wall, since it separates my office 
from 7 computers, a furnace and the hot water heater. :)

> Dow
> 
> 
> Geoffrey wrote:
> 
>> Just out of curiosity, my expectation is that if the cpu is running 
>> 45C (~112F), that the heat sink would be pretty warm to the touch, but 
>> that does not appear to be the case.  Maybe not, since 112F isn't but 
>> a few degrees above body temperature.  Maybe I've got my upper limit 
>> wrong?? Input??
>>
> 

-- 
Until later: Geoffrey		esoteric at 3times25.net

I didn't have to buy my radio from a specific company to listen
to FM, why doesn't that apply to the Internet (anymore...)?


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