Coil whine when i move my cursor

snuk95 · March 19, 2019

Hello Everyone,

Can you help me with my coil whine problem? I have a Z370-P II motherboard from Asus and when i move the mouse i have a little coil whine that sounds from the CPU/RAM area. When i stress the processor with p95 or other stress software the buzzing is disappear. If i open Google Chrome and scroll the pages i hear that buzz again. If i switch between the power management from windows on power saving is almost gone, high performance & balance the buzz is appear.

The buzz appear to be only on idle.

What i tried to solve the problem:

- i have changed the PSU and the sound is still there

- i disabled C-State from BIOS and the buzz dissapear complete

- if i change the polling rate from mouse to 125 is almost gone (1000 was default, i have a Logitech G102)

I speak with ASUS and they told me this: "It's just inductor resonance, nothing to worry about. Different combinations of PSU and VRM will cause it."

The PSU is a Seasonic Focus 650W. The sound is not from the PSU. I remove GPU as well and the little sound is still there. I read that the modern motherboards has some features for power manangement and almost all motherboard has coil whine. Is that true? Should i RMA the board?
I don't hear the sound on my headset, i hear it only with my head on the case. I must be worry about this? Thank you for your time!
**** I want to know if this will affect my system and if this is normal. I am not worry about the buzz so much but i am worry if my motherboard will fail. ****
Here is a video to see how is sounds: https://www.dropbox.com/s/rc12gkjn75...et_pc.mp4?dl=0