So, I just recently purchased an ACX EVGA 780 Ti Superclocked graphics card secondhand from a gentleman locally. He told me that he had heard coil whine and some rattling from the fans before he took it out of his rig. I figured playing with clock and fan speeds could maybe alleviate these issues, so I bit the bullet as I got a pretty good deal on it.
 
Coil whine and fan rattle are present. Overclocking, downclocking, ramping up the fans and turning them down does not fix this. I've also changed power supply (no cigar.) I have an approved RMA but I keep hearing about people receiving multiple RMA'd cards that have the same issue (some even worse.) 
 
I'm about to build a custom water loop, and I know that will fix the fan rattling issue (can't rattle when there are none, amiright?) I am wondering however if I could expect the coil whine to be fixed as well. Has anyone had experience putting one of these troubled cards under water and had the coil whine disappear? Should I keep my card, or take my chances trying to get another one sent to me?
 
My specs are:
 
Intel i5 4670k (stock)
8Gb of Kingston HyperX Ram (Stock 1600MHz)
Gigabyte Z87 UD4H
Samsung Pro 128Gb SSD
EVGA SuperNOVA 750G2 Power Supply (Also tested Corsair RM850)
 
 

Ensure "Coil Wine" isnt simply high pitch noise from the GPU Fans.....I "thought" I may have had Coil Wine on my SLi 780Ti's...in the last 3 wks I have converted my Rig over to all Liquid Cooling, including 780Ti EK Full Water Blocks....now there silent ;)
 
And for the OP...no, there will be no Fan rattle once convering to WB's...the entire GPU except for the PCB will be sitting in your closet!!