CPU Heat issue or ... broken temperature sensor?

[Gannon]

Whenever I run Motherboard monitor 5 or my native Asus temperature probe, I'm getting temperatures of 87C for the CPU, the heatsink is on fine, so is it likely that the temperature sensor is malfunctioning? its a P4 3.2 Ghz (3.2c), running on a P4P800.

 

[EmoHawk]

Taking into consideration that you used the appropriate amount of thermal paste, I would say that the sensor is malfunctioning. I don't think a P4 would run that hot. To my knowledge (open to correction) AMD's run hotter than pentiums and amds have a die temperature of around 70 to 80C. You should be looking at a temp of 50C during load for your cpu. If the sensor is right then you have a major problem!! What case/other fans do you have?

 

[imported_Phil]

Originally posted by: EmoHawk
Taking into consideration that you used the appropriate amount of thermal paste, I would say that the sensor is malfunctioning. I don't think a P4 would run that hot. To my knowledge (open to correction) AMD's run hotter than pentiums and amds have a die temperature of around 70 to 80C. You should be looking at a temp of 50C during load for your cpu. I the sensor is right then you have a major problem!! What case/other cooling do you have?

Wrong.
If anything, the Athlon64 runs cooler than the Northwood P4, especially the Prescott-core P4.

My 2600+ @ 2.2Ghz is sitting at 42C right now.

 

[Gannon]

I have a standard P4 heatsink but I dont understand how temperatures could get that high, my case is standard and I didn't have a problem with temperatures before I switched motherboards. I'm using the same heatsink I did before I switched motherboards also btw. Also wouldn't the cpu freeze at 86 Degrees C? my computer runs fine for hours on end, if it was really truly, running that hot wouldn't the internal circuitry shut it down?

 

[Appledrop]

what does the bios report?

 

[EmoHawk]

I stand corrected.
(not the first time and certainly not the last)

 

[Gannon]

the bios reports like 36C-40C, but can it be trusted since the CPU is not under any load?

 

[EmoHawk]

Thast sounds much more realistic. Is that bios temp taken when you first turn on or after its been running for a while?

 

[Gannon]

Wouldn't the temperature immediately drop on reboot? My bios takes about 5-6 seconds to load up with all the other internal hardware bios's that go through their little "screens". I'll try your suggestion and reset the machine and immediately jump into the bios and take a reading.

 

[Appledrop]

if bios reads 36-40 then theres nothing to worry about - motherboard monitor is wrong

 

[EmoHawk]

Azzy64 is right, there isn't enough time for the cpu to cool down between shutdown and re-boot, so the reading you get should be correct.

 

[imported_Phil]

Originally posted by: Gannon
Wouldn't the temperature immediately drop on reboot? My bios takes about 5-6 seconds to load up with all the other internal hardware bios's that go through their little "screens". I'll try your suggestion and reset the machine and immediately jump into the bios and take a reading.

Actually, if you monitor the temperature of an Intel chip at idle in Windows, and then hard-reset and go straight into the BIOS, you'll generally find that it increases if you are using an Intel board.

Intel have explained this to my company (Intel Premiere Provider status) as the BIOS runs the chip at something approaching 100% load, for whatever reason.

I didn't believe it myself until I tried it- temperature in Windows (using MBM 5 and the Intel Desktop Utilities) was around 45-50C, the BIOS then raised that to around 75C (Prescott-core pre-release LGA-775 chip).