joelkyr

Reseat your HS and see if their is any improvement.

__________________
MOBO: ASUS P4C800E DELUXE
CPU: P4 3.4HT @ 3.918ghz
COOLING: Vapochill PE / MCW20-P /MCW50 /MCP650/ BIX
RAM: TWINX1024-4400C25 CORSAIR
HDD: MAXTOR 120GB/8MB
OS: XP PRO
SC: TURTLE BEACH SANTA CRUZ 5.1
PSU: OCZ Modstream 520W

Archangel

is the heatsink clean? and if it is, if you put your hand on the side of the heatsink, do you feel a big airflow? because it think this is a problem with the arflow.
also, make shure IDE cable dont produce a big resistance in the airflow.

does the pc get enough air through the side, is no opening of the case blockaded?

__________________
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Xfire - Mirrari
Intel Q6600 ( @3.6GHz)
Asus Triton 79 Amazing 549/3200
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Corsair HX620W PSU

Cephus

Nope, it was a brand new, out-of-the-package heatsink that was wiped clean before installation, using AS5 grease.

No, they're routed around the airflow.

At the moment, both sides are off the case and we put a 20" box fan, blowing in HIGH blowing into the case. The CPU overheated again last night. If you put any sort of moderate load on the system, it overheats.

Cephus

Initially we thought it was a failing fan so I replaced it with another fan that we had here. Identical temperatures. So we went out and got a high efficiency fan with a copper heatsink rated for a much faster processor. Identical temperatures.

The mobo temp reads around 35C so my question now is, is it a possible bad heat sensor (the mobo is shutting down the system to keep it from being damaged) or a possible bad CPU?

I really don't think it's the fans at this point considering how much we have blowing into the system. We could probably cryo-freeze it and have the problem.

Cromewell

Does the CPU temp ever change or does it more or less react as you would expect? The thermister might be screwed up do you have a temperature probe you could attach to get a rough reading?

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Yeti

So your mobo temp reads 35 C and your CPU temp reads 60+ C? Thats a pretty big temp delta. That would most likely mean one of three things (assuming proper air flow):
1) your heatsink is inadequate
2) large contact resistance between the CPU and heatsink due to improper thermal paste application
3) malfunctioning thermal diode

If you're absolutely sure you applied the thermal paste correctly then I would guess its a bad diode. Those things aren't terribly accurate to begin with.

What exactly do you mean by that?

Cephus

The heatsink is rated higher than the CPU and I know the thermal paste is fine so I guess that's all that's left. I've got the mobo set to shut down before it overheats, I can turn that off and see if it fries anything.

Worst that happens is she gets an upgrade.

Archangel

is your psu hot? (just to make shure it doesnt blow his hot air towards te heatsink )

__________________
Newton is dead, Einstein is dead, I don't feel very well either

Xfire - Mirrari
Intel Q6600 ( @3.6GHz)
Asus Triton 79 Amazing 549/3200
4x 1Gb Corsair XMS2 DDR800
Asus Maximus Formula
Asus & Sapphire HD3870 512Mb ( 850/1180 )
Corsair HX620W PSU

Cephus

Nope, it's venting out the rear of the case, that shouldn't be a problem.

I'm really convinced it's a bad sensor. Might as well turn it off and see if I have a problem.

Archangel

well do ou have such a laser-thermometer (or something like that), so you can measure it yourself while he pc is urned on? then o could pomard both maument and see if they are te same

__________________
Newton is dead, Einstein is dead, I don't feel very well either

Xfire - Mirrari
Intel Q6600 ( @3.6GHz)
Asus Triton 79 Amazing 549/3200
4x 1Gb Corsair XMS2 DDR800
Asus Maximus Formula
Asus & Sapphire HD3870 512Mb ( 850/1180 )
Corsair HX620W PSU