New Athlon XP System cooling issues

[kanec]

Hi.

I was wondering if someone could give me a kick in the right direction.

I recently bought a new rig to replace my old 500Mhz Athlon. I have a concern about the new CPUs temperature not being as good as it should be.

I am using 4xYS-TECH 80mm fans (NFD1281257B-2N; 3,400RPM; 41.6CFM; 37.5dBA). 1 front intake(low mount); 2 rear exhaust; 1 heatsink exhaust).

Room ambient: 21.3*C
Case ambient: 22.0*C
CPU idle: 41*C
CPU load (prime95): 49*C
Temperature of exhaust air (idle): 23.8*C
Temperature of exhaust air (load): 24.4*C

All temps are from the temperature thermistor and the hardware doctor ver 2.7 (which correlate with the bios).

I've seen much better temperatures around the various forums with essentially the same kit (and similiar ambient), however larger CFM over the heatsink.

I've taken the correct preparations with installing the heatsink + artic silver II and am confident that it is seated correctly.

Additionally, I have recently removed the drive fan bay bracket to place the drives closer to the front of the case and opening up the air channel behind the AGP card more. This was an improvement of around 1*C. I am currently not using rounded cables (on order), but I have kept the current cables very tidy.

Am I not moving enough air? Also, when I take the case side off the temperature doesn't move.

Any thoughts?


Cheers

Kane

[azhari]

How are you measuring the temps? I'm wondering if the built-in temp sensor is not accurate.

[kanec]

Azhari,

thanks for replying.

The temps for the cpu and case are from the abit motherboard. 1 is positioned under the die, another under the 1st pci slot from the bottom.

Exhaust and room temps are coming from a digital thermometer, it also has a 'thermometer-on-a-string' :p that i've placing around the mb and exhaust.

All information I have seen on the net so far as lead me to believe they are generally accurate. I can't be certain that this is the case with my particular board, but at the worst I don't expect it to be that far out.

Cheers

Kane

[UserName]

If you switch the fans on the back to blow into the case and the front fan to blow out i bet you get a 3C drop

[Yodums]

Are you using the stock heatsink?

If I'm correct your using an external sensor.

The sensor shouldn't be on the die/core it should be on the side taped down and then some ASII on the tip so it touches a TINY BIT of the die.

Your heatsink probably not making full contact.

Your wires aren't everywhere right?

[kanec]

Unfortunately, no dice. Thanks for reply though.

Room temp was roughly the same but increased a notch.

Room ambient: 22.2*C
Case ambient: 25.0*C
CPU idle: 42*C
CPU load (prime95): 50*C
Case ambient underload: 27*C

However, it was exhausting more heat though from the front (up to 25.3*C under load).

Case temp went skyward it's now on 28*C. It's not getting rid of the heat out of the case. CPU's stuck on 43*C as well.

The interesting thing was though how quickly it fell after stopping prime95. This makes me even more sure though that's some nasty air occuring around the heatsink.

Cheers.

P.S. There seems to be two of us with the same problem posting at the same time. Link is here -> Advice on cooling case (http://forums.overclockers.ws/vb/showthread.php?s=&threadid=60454) .

Moderators, is it ok to close this thread off?

[kanec]

Yodums,

Heatsink is an Alpha 8045 w/YS-TECH 80mm fans (NFD1281257B-2N; 3,400RPM; 41.6CFM; 37.5dBA).

Sensor is on the motherboard, under the die. The other sensor I am using is an external one that I'm using to test exhaust temperatures (oh and it says a storms coming in ;).

Hmm the heatsink not making contact. I'm worried about that, as I'm sure anyone in this position is. But I'm so sure that I've got that puppy on properly. I really took my time with that process. Checked, rechecked and checked again.

I got the wires super clean. As best as I could do without the rounded cables (ordering those). I've even got the fans wires nice and tidy.


Originally posted by Yodums
Are you using the stock heatsink?

If I'm correct your using an external sensor.

The sensor shouldn't be on the die/core it should be on the side taped down and then some ASII on the tip so it touches a TINY BIT of the die.

Your heatsink probably not making full contact.

Your wires aren't everywhere right?