So I recently got my new APU-based system "running." Everything's going pretty well...performance is in-line, overclocks quite nicely, etc. The only problem is, none of the programs that I've tried displays the correct CPU temperatures - not even the one my motherboard manufacuturer gives!!

First, here are the system specs (an example to all you newer people):

Pre-Built PC Brand / Model if rig is a DELL/COMPAQ/ACER etc : Custom built

Motherboard: Gigabyte GA-A75-D3H
CPU ( Brand / Model / Is the computer Overclocked, if so list CPU speeds, FSB, Memory speeds, Voltages etc. etc.): AMD APU A6-3670K w/ stock heatsink (tried both stock speeds & overclocked up to 3.2GHz. overclocked only using multiplier, voltages are all stock/default except CPU voltage is at ~1.47v)
RAM ( Brand / Model / Tell us the number of sticks and if you´re using different brands): 8GB (2 X 4GB) Corsiar Vengeance DDR3 1600MHz @ 7-8-7-21-1T 1.5v CMZ8GX3M2A1600C9B
Video Card ( Brand / Model / Is it overclocked, and if so, to what speeds and using what utility ): None. currently using the APU's HD 6530D (overclocked to 500MHz Core...memory is 800MHz [RAM frequency])
PSU ( IMPORTANT !!! Brand & Model / Link to webpage with specs / manufacturer's website or picture of unit label ): Corsair TX850 850W (the one from my Phenom II X6 1090T system (sig) as the PSU for this APU has not arrive yet)
Monitor ( Brand / Model / Connection used): Acer G215H, using DVI connection
Hard drives: Hitachi Deskstar 320GB SATA2
Optical Drives: LiteON DVD-RW
Additional PCI cards: None
Number of fans present: Cooler Master HAF 912. 200mm at bottom-front (intake), 200mm at top (exhaust), 140mm at side panel (intake), 120mm rear (exhaust)

PLUS the following:

Operating System : Windows 7 Ultimate x64
Video Card Drivers in Use ( and tried ): 12.3 with CAP1
Motherboard Drivers Used: using BIOS version F4 (F5a is a beta BIOS). All LAN/USB drivers are latest on Gigabyte's website.
Apps/Games causing issues ( and if they've been patched ): HWMonitor, AIDA64, CoreTemp, EasyTune6, AMD OverDrive, HWinFO64 (all latest versions)
All major components check 100% after thorough testing ( eg. Memory & Memtest86 ): Ran tests with Prime95, 3D Mark 11, 3D Mark vantage, and Starcraft II
System clean of viruses / spyware etc: Fresh install of Windows with...pretty much an empty drive (programs / tools I installed)
Other things tried: contacted Gigabyte support (currently discussing with them), tried other computer forums, looked into APU reviews...

With that out of the way...

when idling in the BIOS, the CPU temperature is indicated to be, in my case, 20 / 21*C. The System temperature is 24*C. Room temperature is about 18 / 19*C.

In Windows, letting the system idle, CoreTemp, HWMonitor, and HWinFO64 will show the CPU temperautre to be 0*C, 1 / 2*C, or even negative!!

EasyTune6, and AMD OverDrive will show 9-11*C for CPU temperatures.

In all the programs used, the System temperature matches the 23/ 24*C from the BIOS.

If I get the CPU "working" and EasyTune shows 22*C, HWMonitor / HWinFO64 will show 12*C for the CPU temperature.

I'm beginning to think that the temperature in BIOS is correct. OverDrive, and EasyTune are off from what BIOS is readign by ~10*C. HWMonitor, CoreTemp, HWinFO64 are off of EasyTune / OverDrive by 10*C.

To simplify...BIOS is probably correct. (Comparing to BIOS), EasyTune / OverDrive is off by 10*C, HWMonitor (and others) is off by 20*C (hence the zero or less reading).

Some images:

http://imageshack.us/f/823/tempmonitor.png/

http://img851.imageshack.us/img851/9440/oddt.png

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Phenom II X6 1090T @ 4.1GHz // ASUS Crosshair V Formula 990FX // Sapphire Radeon HD Dual-X 7970 // Thermaltake Frio w/ push-pull (using Antec Formula 7 Nano Diamond paste!!) // 8GB (2 X 4GB) G.Skill RipJaws DDR3 1600MHz @ 8-9-8-34-21-1T // Corsair TX850 850W // Corsair Force GT 120GB SSD (OS) // Kingston 200 V+ 120GB SSD // WD Caviar Black 1TB // Windows 7 Ult x64 // Logitech X-540

Edited: 03/30/2012 at 11:43 PM by -rascal-

If you had an IR thermometer you could get a pretty good idea of the temps, or especially if you had one of those ultra thin and flexible temperature sensors that plugs into a TI graphing calculator...GG could probably help you more since he uses Gigabyte boards

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Crosshair IV Formula, Phenom II x4 965 w/ Corsair H60, 8 GiB OCZ Platinum DDR3 1600, XFX HD 7970 Ghz, 512GB Vertex 4, 256GB Vector, 240GB Agility 3, Creative X-Fi Titanium w/ Creative Gigaworks S750, SeaSonic X750, HP ZR2440w, Win 7 Ultimate x64

Have you found anything on the APU temps? I doubt you will find any answers, this has been an issue with AMD since they first put these sensors on.

anyway, I am expecting mine tomorrow (3870K and ASRock A75 Extrme6) was hoping for better diode support, but it looks like the same old, same old.

I better get busy and fix my Craftsman IR temp gun. It reads whacky high ambient temps. I replaced the 9v battery with no help.

Hopefully I find a reset or calibration method soon. Now if I can remember where I put those instructions so I wouldn't lose them?

remember, you can always use your finger for a reference. lol

-=Mark=-

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GigaByte GA-970A-UD3 | AMD FX-8120 | 16GB (4 x 4GB) G. Skill DDR3-1333 C7 | MSI 7750 OC | 1TB Seagate 7200.11 | Dual boot Windows 7 Ult x64/Ubuntu 10.10 x64