Motherboard causes coil whine

[Guest]

My X370 Asus Crosshair VI Hero emits a high pitched sound from around the gpu area (it is not coming from the gpu itself, like I first thought, because I just tested another GPU). Why does it do that and how do I make it stop?

[Tigerleon]

The chipset fan? Could have to do something with the PSU as well.

[PorkishPig]

7 minutes ago, rebmem rehtona yb esu ni said:

My X370 Asus Crosshair VI Hero emits a high pitched sound from around the gpu area (it is not coming from the gpu itself, like I first thought, because I just tested another GPU). Why does it do that and how do I make it stop?

Seems like many resorted to an RMA:

https://www.reddit.com/r/Amd/comments/eh1cjw/discussing_reports_of_coil_whine_with_ryzen_3000/

https://www.reddit.com/r/Amd/comments/8suzmk/highend_am4_motherboards_with_coil_whine/

[Guest]

3 minutes ago, Tigerleon said:

The chipset fan?

It has a fan? I thought only X570 have one

[Hackentosher]

Coil whine, as the name implies, comes from the inductors and other coils on the board. Inductors are commonly used in switchmode power supplies, like the circuit that powers your CPU to help stabilize the current flowing through whatever rail its helping to regulate. The problem is when you start pulling more and more current through the inductor, you increase the amplitude of the magnetic force induced by the current in the coil. This causes the coil to vibrate harder and harder at whatever switching frequency to the point where you can actually hear it. 

 

If you've ever taken apart a power supply, you may have noticed a bigass inductor on the board with some white hot glue looking stuff on it. This is usually a silicone material called silastic used to hold the wires in place to prevent damage in shipping, and keep them from vibrating under heavy load. If you can find the specific coil that is vibrating like hell, you may be able to fix it by adding some silicone or hot glue around it to dampen the vibrations.

[Guest]

1 minute ago, PorkishPig said:

Seems like many resorted to an RMA:

https://www.reddit.com/r/Amd/comments/eh1cjw/discussing_reports_of_coil_whine_with_ryzen_3000/

https://www.reddit.com/r/Amd/comments/8suzmk/highend_am4_motherboards_with_coil_whine/

I bought it used

[Guest]

1 minute ago, Hackentosher said:

Coil whine, as the name implies, comes from the inductors and other coils on the board. Inductors are commonly used in switchmode power supplies, like the circuit that powers your CPU to help stabilize the current flowing through whatever rail its helping to regulate. The problem is when you start pulling more and more current through the inductor, you increase the amplitude of the magnetic force induced by the current in the coil. This causes the coil to vibrate harder and harder at whatever switching frequency to the point where you can actually hear it. 

 

If you've ever taken apart a power supply, you may have noticed a bigass inductor on the board with some white hot glue looking stuff on it. This is usually a silicone material called silastic used to hold the wires in place to prevent damage in shipping, and keep them from vibrating under heavy load. If you can find the specific coil that is vibrating like hell, you may be able to fix it by adding some silicone or hot glue around it to dampen the vibrations.

Can I see if it vibrates? Or do I have to hear where exactly it's from

[Hackentosher]

Just now, rebmem rehtona yb esu ni said:

Can I see if it vibrates? Or do I have to hear where exactly it's from

If it's shaking so hard you can see it, you probably have some bigger problems on your hand. I would try to find the general area that the noise is coming from, then start feeling around the different inductors on the board. If you can hear them vibrating, you can probably feel them too. 

[Tigerleon]

14 minutes ago, rebmem rehtona yb esu ni said:

It has a fan? I thought only X570 have one

yeah sorry I looked at the wrong mobo.

[SpookyCitrus]

If it is coil whine there are a couple ways to get rid of it, you can try stress testing your components until it goes away(not common but has worked in the past), you can replace the PSU as they can sometimes be the cause, or you can replace the motherboard either with an RMA or just buying a new one. Coil whine is very common and in most cases the only harm it does is be annoying.