CPU temp problem

[ICIT2LOL]

Now I have an older XP machine up and running for mucking around on but have a small query re the CPU temp.

It is running an Intel Pentium 4 630 @ 3.0GHz on an Intel D915GAV board. I have installed a Coolermaster TX3 cooler on the CPU because the stock fan just ran flat out. However this didn't solve the problem as the TX3 fan runs flat out too.

I have run Speccy and Coretemp and even checked in the BIOS but cannot find any temp for the CPU. I checked out the fan control and the CPU is enabled and have even swapped out the CPU for a spare identical one but with the same results.

Now I am out of ideas so ha anyone got any thoughts on what could be the problem please as I am beginning to think maybe the board is not right

 

[bobkn]

From the manual for the board:

Fan Speed Control (Intel® Precision Cooling Technology)
Intel Precision Cooling Technology automatically adjusts the processor fan speed based on the
processor thermal diode temperature and adjusts the chassis fan speeds depending on the system
temperature. System fan noise may be reduced by operating controlled chassis and processor fans
at the minimum necessary speeds.
NOTE
Not all chassis fan headers on desktop boards D915GEV and D915GAV are controlled. Refer to
Table 3 on page 13 to identify controlled chassis fan headers.
The processor and chassis fan speed control features can be disabled independently through the
desktop board BIOS. Disabling the processor fan speed control will result in the fan operating at
full speed if it is not a self controlled fan. It is recommended that processor fan speed control
remain enabled (default BIOS setting) when using the processor fan heat-sink included with Intel®
boxed processors. Disabling the chassis fan speed control results in chassis fans always operating
at full speed. The chassis fan speed control feature should be disabled if a self-controlled chassis
fan is attached to any controlled chassis fan header.
The overall system noise reduction will vary based on system configuration and environment.

Any relevance?

 

[ICIT2LOL]

From the manual for the board:

Fan Speed Control (Intel® Precision Cooling Technology)
Intel Precision Cooling Technology automatically adjusts the processor fan speed based on the
processor thermal diode temperature and adjusts the chassis fan speeds depending on the system
temperature. System fan noise may be reduced by operating controlled chassis and processor fans
at the minimum necessary speeds.
NOTE
Not all chassis fan headers on desktop boards D915GEV and D915GAV are controlled. Refer to
Table 3 on page 13 to identify controlled chassis fan headers.
The processor and chassis fan speed control features can be disabled independently through the
desktop board BIOS. Disabling the processor fan speed control will result in the fan operating at
full speed if it is not a self controlled fan. It is recommended that processor fan speed control
remain enabled (default BIOS setting) when using the processor fan heat-sink included with Intel®
boxed processors. Disabling the chassis fan speed control results in chassis fans always operating
at full speed. The chassis fan speed control feature should be disabled if a self-controlled chassis
fan is attached to any controlled chassis fan header.
The overall system noise reduction will vary based on system configuration and environment.

Any relevance?

Yes Bob I have set the CPU fan to enabled and the rear case fan to slow as the other setting is disabled ?? bu the fan speed never changes from a cold boot through to being run for some time - scans etc I ma just wondering whatever I now got two CPU's with dud thermal diodes?? especially as i cannot pick up the temp readings anywhere either.

 

[carwiz]

Check the fan control parameters in the BIOS. Also check to see if there's a BIOS update. I lost count of the number of times Intel came out with a new board then followed it with a BIOS flash to correct fan speed problems. I remember my old VAIO needing a BIOS flash to correct a fan speed problem at boot. Not really Intel's fault though. They don't make the BIOS.

 

[ICIT2LOL]

Check the fan control parameters in the BIOS. Also check to see if there's a BIOS update. I lost count of the number of times Intel came out with a new board then followed it with a BIOS flash to correct fan speed problems. I remember my old VAIO needing a BIOS flash to correct a fan speed problem at boot. Not really Intel's fault though. They don't make the BIOS.

Ok carwiz I had thought of the BIOS update a while ago but am not at home right now.

The only parameters I can find relating to the CPU fan control is enable / disable and the back fan even stranger with slow or disable. The whole set up seems a tad peculiar really

I'll try the BIOS update and see when I get home tomorrow.

 

[Dwarf]

Does the CPU fan connector on the board have 3 or 4 pins? I suspect it has the former, 3, in which case the fan speed is not directly adjustable (although you can use a standard fan controller, just as you would with a case fan).

 

[bobkn]

Does the CPU fan connector on the board have 3 or 4 pins? I suspect it has the former, 3, in which case the fan speed is not directly adjustable (although you can use a standard fan controller, just as you would with a case fan).

The board has a 4 pin connector for the CPU fan. The fan on a Cooler Master Ultra TX3 is supposed to be a PWM fan.

 

[kbrady1979]

Something else you can check are the capacitors on the motherboard. I've seen a few machines from that time that have had knock-off capacitors that blew and caused the CPU fan to spin wide-open. Most recently my aunt had an older Dell that had that problem.

 

[ICIT2LOL]

Ok I have checked out as far as I can see the caps none look bulged or leaking not that that is any true indicator could be a dry joint I suppose.

I updated to the latest BIOS version and have disabled CPU fan control just to see what if anything happens - nothing the fan still runs flat chat and I have swapped the Coolermaster one out for quieter three pin case fan as the CM was belting out 35dB's. I did find some refs to temps in the BIOS under Hardware settings - Processor Zone and System 1 and System 2 and the temps were around 44C. Now I am guessing that this is the temp within the CPU as HWMonitor is showing me the temp diodes as in the pic?
The noise at the moment one could accept but it still does not answer why the fan does not change speed - the temps in the pic were while dong a MBAM scan but it seems they differ only by 1-2C even at idle.