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SpeedFan temperature detection - can it be false?

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#1 mrmatt2


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Posted 17 October 2009 - 02:13 PM

About a week ago, just finished building this computer with a lot of input from everyone here - THANKS!! :thumbsup:

My general Stats for this question:
Mainboard Vendor ECS
Mainboard Model A790GXM-AD3
Windows xp home

I have run both SpeedFan and CPUID HWMonitor and both confirm all my hardware, fans and voltages are good EXCEPT what is in bold:

Voltage sensor 0 1.31 Volts [0x52] (CPU VCORE)
Voltage sensor 1 3.50 Volts [0xDB] (VIN1)
Voltage sensor 2 1.57 Volts [0x62] (+3.3V)
Voltage sensor 3 5.03 Volts [0xBB] (+5V)
Voltage sensor 4 4.86 Volts [0x4C] (+12V)
Voltage sensor 5 -9.92 Volts [0x9B] (-12V)
Voltage sensor 6 -10.05 Volts [0x9D] (-5V)
Voltage sensor 7 5.51 Volts [0xCD] (+5V VCCH)
Voltage sensor 8 3.07 Volts [0xC0] (VBAT)
Temperature sensor 0 31C (87F) [0x1F] (TMPIN0)
Temperature sensor 1 33C (91F) [0x21] (TMPIN1)
Temperature sensor 2 126C (258F) [0x7E] (TMPIN2)
Fan sensor 0 1923 RPM [0x15F] (FANIN0)
Fan sensor 1 2039 RPM [0x14B] (FANIN1)
Fan sensor 2 311 RPM [0x21F] (FANIN2)

I have done the following:
Turned the computer COMPLETELY off ( unplugged) for an hour
Turned computer on, it boots up real quick within 20-30 sec, immediately ran the program and was getting temps around 240F (!). - above the temp for boiling water!

Can anyone determine what this sensor is reading, says TMPIN2 -if that is a chip can it really withstand a temp of 250F+?!
Maybe the sensor is off...

I opened the side of the case, fanned air into it, did not change the temp, but made it bounce up and back - "up" meaning it went up a degree or 2 while I fanned it.

Any thoughts?



Edited by mrmatt2, 17 October 2009 - 02:13 PM.

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#2 Sterling14


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Posted 17 October 2009 - 07:08 PM

If you're not having issues with your computer, I'd say it's probably misreading. I'm not sure of what that's reading either
"I think there is a world market for maybe five computers." - Thomas Watson, Chairman of IBM, 1943

#3 Layback Bear

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Posted 18 October 2009 - 07:04 AM

A program that might help you; EVEREST Home Edition. It will give you all the information of your system. For temperatures just tick the + next to Computer and then tick Sensor. My cpu is 41 deg C /106 deg F. now. This program will give you more information about your system than you ever wanted to know.

Edited by Layback Bear, 18 October 2009 - 07:05 AM.

#4 DaffyKantReed


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Posted 18 October 2009 - 07:36 AM

I have run both SpeedFan and CPUID HWMonitor and both confirm all my hardware, fans and voltages are good EXCEPT what is in bold:

Temperature sensor 2 126C (258F) [0x7E] (TMPIN2)
Fan sensor 0 1923 RPM [0x15F] (FANIN0)
Fan sensor 1 2039 RPM [0x14B] (FANIN1)
Fan sensor 2 311 RPM [0x21F] (FANIN2)

Any thoughts?

According to HD Tune SMART data, my SSD is at approx. 2.5 million degress right now. I thought it was a little warm in this room.

In general, silicon devices are rated for 100 degrees C or less. If it actually was hotter, you would have noticed odd behaviour from the hardware.

#5 hamluis



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Posted 18 October 2009 - 09:11 AM

Generally speaking...any 3d-party utility which provides temperature data to users...seems to always have a disclaimer (which users don't bother to read) stating that the accuracy of data depicted is not guaranteed by the developer of the utility.


#6 the_patriot11


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Posted 18 October 2009 - 05:32 PM

I would go to ECS and see if they have a temperature software of their own. sometimes the manufacturer software takes more accurate readings then third party. But I would definetly use another utility, third party or manufacturer, and if that reads high to, go from there.



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#7 MichaelMatirko


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Posted 19 October 2009 - 04:30 PM

I've noticed Speedfan to be a little off too.
However, it's very possible it's the sensor.

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