I may be an odd ball out case on this, but the hearing in my left ear has been measured at 48Khz and my right ear 54Khz response, but whenever I do something cpu/video wise I hear a very high pitched whine over my headphones/speakers Its quiet as in you would never hear it if you are playing some other audio, but I notice it frequently if I have something muted and I'm doing something computer intensive The more cpu/gpu use required the louder the pitch is
Not me no pitch here btw I have an GTX 1070 but I think it is your harware configuration related not necessary the card itself
Sounds like bad wiring or poor Soundcard insulation. Never heard something like that myself, and i also pick up the slightest high pitched sounds. (Its nice to have good hearing, but i know what you're going thru)
Never got it with my GTX980, just seems like the 1080 whenever the CPU is under load I hear loud noise When doing nothing the noise is rather quiet