You've got Skylake I've got an older Ivy-E, that's probably where you're getting the edge
Not sure what PSU you have but if you're straining it, that could lead to whine. The PSU is probably the most important component in anyone's system.. It's hard to see that but without consistent, clean and reliable power all kinds of things can happen.
I would never RMA a 980Ti that could boost to 1600Mhz but that's just me
Do you feel lucky? Well do ya?
Solution 1 - Orient your PC on the other side so that the case opening is away from you (if you keep your case open... I do... I assume most O/Cers do)
Solution 2 - Use headphones
Solution 3 - Turn your speakers up louder
Solution 4 - Return your GPU and get one that only overclocks to 1465Mhz