I recently sold a RTX 4080 Founders Edition, and the buyer said that it has coil whine(which it did before hand, but seemed to lessen as time went on). The buyer said that they where going to put a water block on the card and see if that lessened the coil whine. Here is my question, can the buyer still return the card if they open the card up and put a water block on it?
The card has not been opened up before.
