Wrong CPU temps!!

[powerpie5000]

I recently built a budget gaming rig and have just noticed my CPU temps seem a bit too low! I'm using an 'AMD ATHLON II X4 645' CPU along with an 'ASUS M4A88TD-M EVO/USB3' motherboard. I'm not sure if the temp sensors on the motherboard are wrong or maybe it's a problem with the CPU sensors?

These are the temps i'm getting right now using HWMonitor (idle temps):

CPU Temp - 31C (usually around 55C at load)
Mainboard - 25C (usually around 30C at load)

Core#0 - 16C (all cores are usually around 35C at load... still a bit too low)
Core#1 - 16C
Core#2 - 16C
Core#3 - 16C

I get the same results whatever software i use to check the temps. The motherboard hardware monitoring sensor is being detected as 'ITE IT8721F'. I'm using the stock AMD heatsink and running the CPU at stock speed and voltage. My case (In Win Dragon Slayer) has 2 x intake fans on the front and 2 x exhaust fans (one at the rear and one at the top).

Anyone have any ideas? Cheers

Also... my room temp at the moment is 21C

 

[powerpie5000]

Does anyone else have temperature reading issues with any of the 'M4A88TD' series boards?

 

[jaquith]

They look perfect in the Arctic Circle or in a refrigerator

What temps are in the BIOS?

What BIOS version are you running? 1003 at minimum is required for your AMD 645...
{ Athlon IIX4 645(ADX645WFK42GM),3.1GHz,512KB,rev.C3,95W,SocketAM3 ALL 1003 }

 

[powerpie5000]

They look perfect in the Arctic Circle or in a refrigerator

What temps are in the BIOS?

What BIOS version are you running? 1003 at minimum is required for your AMD 645...
{ Athlon IIX4 645(ADX645WFK42GM),3.1GHz,512KB,rev.C3,95W,SocketAM3 ALL 1003 }

My Asus board is using the latest bios (version 1702) and the bios only shows a single CPU temp reading which is 31C... It doesn't show the temps for individual cores. I'm guessing the temp sensor on the motherboard is doing it's job (probably a diode placed in the CPU socket which is not going to be 100% accurate) and the temp sensor (or sensors?) in the CPU are way off for some reason.