Speedfan and the various temp's ???

[blinky88]

About the temp. results in Speedfan, appreciate advise on what temp. 4 is relating to. It would seem it is not relating to the CPU (fan 1) ???


1 = CPU
2 = Motherboard
3 = HDD
4 = ???


Cheers from downunder to all.

[nic2k4]

The readings you see in Speedfan depend on the motherboard you have. Some boards will show the CPU temp with temp3, others temp1... Also, not all ports on the hardware monitor chip, are used. The ones that give impossible values are the ones that aren't used. If you're not sure which is the CPU temp, just check with the BIOS' PCHealth.

As for your temp4, click configure and look under core temp. That's the reading from the built in CPU sensor and comes from the ACPI temp in your image.

Look at the voltages tab, you can remove the negative voltages from the listing, ATX power supplies don't have negative voltage rails.

[blinky88]

The temp. shown under fan 1 is the CPU.
The temp. under fan 2 is the mobo.
Temp. under HDD is self explanitory.
The last temp. noted as fan 1 has got me stumped.

[aedipuss]

the 4th one is most likely the acpi temp. the southbridge possibly.

[redwudz]

ATX power supplies don't have negative voltage rails.

Yes they do. Usually a -12VDC and sometimes a -5VDC. But may be not used much anymore except for analog audio outputs and some types of logic circuits. (2002 v1.2 made -5VDC optional , 2004 v2.01 removed from specification) http://pinouts.ru/Power/atxpower_pinout.shtml

Other devices that sometimes have sensors are the GPU (Video card), though it's often 40C - 55C, so may be easy to recognize.

I find HWMonitor a lot easier to use, though Speedfan is more flexible: http://www.cpuid.com/hwmonitor.php

[aedipuss]

for cpu temps i like coretemp - http://www.alcpu.com/CoreTemp/

[budz]

core temp is used for 65nm cpu's like Conroe E6400, E2160.
real temp is used for 45nm cpu's like the Wolfdale's E8400, E8500 & E8600.

[ocgw]

About the temp. results in Speedfan, appreciate advise on what temp. 4 is relating to. It would seem it is not relating to the CPU (fan 1) ???


1 = CPU
2 = Motherboard
3 = HDD
4 = ???


Cheers from downunder to all.

You might have 2 core temps shown for core 1 and core 2 just like you have 2 cpu voltage readings

temp 1 = cpu core 0

temp 2 = cpu core 1

temp 3 = HDD

temp 4 = NB

note: the disparity in voltage would explain the difference in temps across the die (if my theory is acurate)

ocgw

peace

[nic2k4]

The temp. shown under fan 1 is the CPU.
The temp. under fan 2 is the mobo.
Temp. under HDD is self explanitory.
The last temp. noted as fan 1 has got me stumped.

I gotta ask is this PC in an A/C room ( or maybe a cave ;) ) or are you using some form of active cooling? 'Cause if you are getting readings that are lower than ambiant temp, they're un-reliable. In which case,I would switch to the Core Temp reading (ACPI reading) for the CPU temp. That's the temp4 reading you're asking about.

[blinky88]

Hi Nic,

It's winter downunder, bloody cold .... thanks for clearing that up for me.

The CPU is a P4 2g socket 478.

Many thanks to all who responded, appreciated.

[blinky88]

Hi again Nic,

After a google search and reading MANY comments about Speedfan and what the various temp's relate to, no-one ..ie.. outside of yourself think the ACPI temp is the CPU core temp, in fact, from what I have read, most think it relates to some chip on the M/B although no-one really knows. ACPI (Advanced Configuration and Power Interface) hard to see how this relates to the core temp ?