buzzing noise from headphones after graphics card upgrade?

[littlenezt]

hi guys, i want to ask you some question, hope you can understand what im trying to ask because i dont speak english well. 
Okay, i have some weird problem with my pc after i upgrade my graphics card to msi gtx 960 2gd5t oc (i previously use his r7 250x), so after i put my 960, i got some weird buzzing noise through my headphone and my speakers(for speakers i need to turn the volume up then the buzzing noise is hearable) only when i launch a game , when browsing or listening music in the desktop there is no such buzzing noise, and the noise is not coming from the gpu or psu like coil whine. 
I use sound blaster z soundcard btw. I have bring back my 960 to the shop and swap it with another 960 but the buzzing noise is still there, any tips how can i fix this weird noise?

(i have try to remove the soundcard using onboard audio, the noise still there.)

[SSL]

You probably can't fix it, you can only get an external amp+DAC.

[littlenezt]

nnnoooooo  :blink: 

[YajirobeFromDC]

Coil whine

[BoredErica]

nnnoooooo  :blink: 

Look on the bright side: Now you have a reason to sell your sound card, which should still sell for some decent price to a sucker, and use that money to get an external solution.

[littlenezt]

Coil whine

the graphics card itself dont make any buzzing noise when playing games, the noise only hearable through headset or speakers with maximum volume

 

Look on the bright side: Now you have a reason to sell your sound card, which should still sell for some decent price to a sucker, and use that money to get an external solution.

but why when i still use my old gtx 460 and r7 250x with soundcard theres no such buzzing annoying trololing noise  :wacko: