Audiophile optimizer produces cpu whining

[latenz]

Hi

i am very happy with the sound from AO. It’s running on a one box solution with win server 2019 on a Asus Pro WS C246 ACE with a XenonE 2276G.
this setup exists two times at a friends home. On both mashines now the CPU starts whining. never before. We had win10 pro with fidelizer- no problem ever on the same hardware. Any idea.  
There is a video attached with the sound....

thanks for helping.

     

[Zauurx]

It requires a little more investigation. CPU load, process, driver, latency ... 95%, driver problem. WS is not W10. Lightness has a price and (not necessarily justified) I prefer to stay under LTSC.

[latenz]

what do you want to see?

 

 

[latenz]

a bit more...

 

 

[Zauurx]

It seems that the driver for the storage media is not optimal.
And probably the network card (s).
Are the drivers up to date (WS2019 compatible version from the manufacturers site)?

[latenz]

??? Asus is ja ist providing a chipset driver package for this workstation board. 
but network seems to work just fine and I have no problems shown in the devicemanager.

 

[Miska]

I doubt it is the CPU, but instead the VRM PSUs around the CPU which are essentially a high current low voltage switching regulators. The switching frequency makes slight vibration in the coils and that causes the sound. Not at all unusual with switching regulators/SMPS. I have couple of Intel NUCs that make similar sound too.

 

Likely software changes changed the CPU power consumption (voltage/current) and that caused the whining to become louder or more audible.

 

There's a PMIC/PMU on the motherboard with it's own firmware that manages this, power up sequence and such.

 

[Racerxnet]

Coil whine from the GPU is common on the NVidia cards..

[latenz]

I killed hyperthreading and turbo-mode...now it’s gone...

[latenz]

Thank you all for helping and Miska showed the right direction...bios...