Question Coil whine noise cx550

[Shawnfrost16691999]

So i bought new cx550 psu.it has very low coil whine noise and the noise increases to audible when my house is running on inverter (i.e when there is power cut in my society). I listened to the noise when the pc is off and only cpu wire and psu wire is connected to motherboard.when the pc is on the noise is same.same issue even on replacement product.

Specs:
Ryzen 2600
Rx570
Aorus gigabyte pro wifi

I dont have this issue with seasonic 450w psu connected in other pc .i could have bought that same psu but i decided to go for cx550 after going through tier list of PSUs.


So my question is to return it and get seasonic eco bronze 450w( my other pc has it and there is no coil whine) or stick with this product?

 

[Shawnfrost16691999]

Nvm the coil wine is there in both season eco and cx550 . Sorry for bothering.

 

[jojesa]

I would return it or replace it with another CX550.
I doubt two of them will have the same issue.

 

[jojesa]

Try changing CPU C-States in the BIOS to see if it goes away.