ASUS ROG MAXIMUS Z790 HERO COIL WHINE

[adrifoxbg]

Hello, I have a question for everyone who owns this motherboard
For some time now, a low hissing noise has started to be heard
I believed it was the cooling, I bought a new one but that didn't solve the problem.
I removed the video card because it is the main cause of the coil, no effect
I have doubts about the power supply or, as a last resort, the motherboard.
The cooling I use is liquid Artic 420 a-rgb, connected to CPU HEADER
If anyone has a similar problem, please share an opinion

[Silent_Scone · Accepted solution]

Hi @adrifoxbg 

Sounds like inductor resonance. It ultimately depends on the interaction between the power supply unit and the VRM across different frequencies and levels of current

[adrifoxbg]

I will try this option as well.

It will be bad and after changing the power supply the problem still remains

[Jiaszzz_ROG]

Hello, @adrifoxbg 

I apologize for the delayed response.
May I ask if the situation you described happened after any changes were made? For example, adjusting the BIOS settings or connecting an external device
Is the issue occurring in specific usage scenarios, such as playing high-demanding games or browsing certain websites?
Have you noticed if adjusting the fan speed could potentially alleviate the situation?
Could you confirm your current BIOS version?
Have you tried upgrading to the most recent BIOS version, issued on February 23, 2024 (version 2002), and clearing CMOS to check if the coil whine remains?

Thank you.

[adrifoxbg]

I tried many things and tests of different kinds.
The only thing related to the BIOS is that I have XMP on
MCE is disabled

BIOS v 2002 
Everything else is at default settings.
I have doubts that it is possible that it is the liquid cooling and more precisely the Artic pump
With all fans turned off, including cooling, there is no such noise.
Under Windows, there is a noise like a rattling fan, which can only be from the pump.

Under Linux, there is no such rattling, but this squeaking remains
The power supply is 4 years old, still under warranty.
Dark Power pro 11 - 750 watts
There is a slight noise there too, but still a fan is spinning and there is no way it will be silent at 0 db
But at the same time, a low high-frequency hiss is heard
When testing fanexpert or q-fans it stops for a moment, but in an OS environment it's there again.

On the Internet, I came across many similar cases with motherboards of competing brands, for this one they also advised stopping the C-state of the core or something similar for resonance

Soon I'm thinking of changing the cooling and power supply, if this continues there is no doubt where it is coming from.

I forgot to note that the liquid cooling has a 1 4 pin cable and is attached to the CPU HEADER