I was asking about this, if you RMA do you get a Brand New card back or does asus send you a refurbished?
I have been seeing a lot report of that problem with asus 1080 ti oc in a lot different forums in the net, you are not alone.
Anyways, yours seems like really bad case of coil whine. Return it. And let us know if you get new or refurbished from asus.
if you get refur , most likely will have coil whine (maybe not as bad as that one) since I think there has been a lot returns to asus for the same problem. They maybe piled up with them!
Perhaps someone more knowledgeable will response soon !