Question Major issue with buzzing in headphones caused by the GPU ?

[thomas4204]

I recently built a new pc only re using the ram and motherboard. I used to have a buzz coming from the GPU to any audio device. Only time it goes away is if i use the 3.5 to 1/4 included with my sennheister 560s.
X570-I < STR-DH750 < Headphones/Speakers

Have tried drivers, changed outlets, completely different circuits too. It just suddenly stared a week or two ago, is fine until i do something as small as scroll, but gets worse when a demanding load is on the GPU. Any help is appreciated, Thanks!

R7 5800x
EVGA 3080ti FTW
EVGA 1300W G2

 

[Misgar]

It sounds as if you may have a "ground loop". What frequency is the buzz? Mains frequency (50/60Hz)?

Does your mobo have an optical Toslink output? That would help to break the loop.

https://www.analog.com/en/technical-articles/breaking-ground-loops-with-functional-isolation.html

 

[thomas4204]

It sounds as if you may have a "ground loop". What frequency is the buzz? Mains frequency (50/60Hz)?

Does your mobo have an optical Toslink output? That would help to break the loop.

https://www.analog.com/en/technical-articles/breaking-ground-loops-with-functional-isolation.html

I’m not 100 percent certain but assuming it is around the 60hz area. And does not unfortunately.

 

[Misgar]

If all else fails and you have a suitable empty PCIe slot, you could buy a sound card with a Toslink output.

Alternatively, try a USB audio DAC and connect the dual phono output to your amplifier. DACs start at around $50 and go up to many $1,000s for HiFi versions.

Optical isolation probably has the best chance of working. It all depends where the interference is entering the audio stages. Some motherboards isolate the audio codec area to reduce EMI.