Temp Problem FM2A88M-HD+ R3.0 & A10-7860K

I'm building a home/office pc for a client, but I'm having temperature issues
I have the latest BIOS pre-installed (1.5) and aside from disabling serial and parallel devices everything is using default values (even 2133 RAM clocked at default 1600). I'm using the stock cooler

On installing Win7 x64, I got HWMonitor up and started a 7-zip benchmark. As usual, I started by setting the fan speed to "silent" in BIOS (about 1100rpm). To my dismay, CPU temp went up to over 70 Celcius and fan speed never changed
So, I next try Normal fan speed (about 2100rpm). This is noisy. Again, fan speed doesn't change but temperatures were sub-70 C
Next, I try Custom and set up a typical curve (low speeds up to 55, high speeds above, as smoothly as possible)
Once again, zero response from the fan; it stayed at the initial / lowest value (10%) and refuses to speed up even with the CPU cooking at just over 80 C

So, now I'm thinking, perhaps temperature control has been turned over to software? This obviously makes no sense if one can set up a custom temp curve in BIOS, but whatever... I ain't got time, let's install this ASRock A-Tuning thing and check out the fan tool...

I run the ASRock A-Tuning software, and immediately there's a huge discrepancy between HWMonitor and A-Tuning reported temp. A-Tuning stays at approx 36C no matter what I do to the APU, HWM reports what I expect to see and also corresponds to the temp shown in BIOS...

The fan tool goes through the whole range of speeds (so nothing wrong with the fan) and then ends with the fan running very fast. The graph it produces is not good, so I manually adjust a little, set it to apply on reboot and reboot

Nothing. No change. However, now I'm getting a really strange noise from the fan. I run the tool again with similar results but the fan really sounds wrong. It's as though its switching rpms very quickly between ranges, causing a whining harmonic that wasn't there initially

Can anyone with similar experience shed any light on this mystery or do any of you have any suspicions based on what I've said? I've built too many PCs to remember, but I've never encountered a situation like this

Many thanks in advance

p.s.: I changed the fan speed by applying pressure with my finger, even stopping it, but no response from the mobo. Shouldn't the mobo force a shutdown or throttle at 80+C? Doesn't do anything...


Edited by plants - 12 Mar 2017 at 1:23am

Thanks for getting back to me on this so quick

I've got to say, my main problem is the lack of response from the fan proportional to temperature. It's not varying at all. This is meant to be a home/office pc, the CPU is rated at 65W, so it's not going to get any 'real action' except for kicking in whenever it's needed, short bursts of intense computation infrequently (huge spreadsheets, some number crunching and occasional 3D)

If it's not responding to temperature variations, should I assume there's a communication problem between mobo and APU? I.e.: either this CPU isn't supported properly, or the fan is defective?

Whaddya reckon?

Thanks for all the extraneous info, but you're really not helping!

plants wrote: I run the ASRock A-Tuning software, and immediately there's a huge discrepancy between HWMonitor and A-Tuning reported temp. A-Tuning stays at approx 36C no matter what I do to the APU, HWM reports what I expect to see and also corresponds to the temp shown in BIOS...

Do not run two monitoring apps at the same time.

When two apps try to access the chip and it's data you will see exactly what you are.