So update:
OCUK agreed to accept my original Red Devil back so I ordered another. Well I still have this annoying hiss whenever I do anything, even now, when the DRAFT SAVED box flashes up in the bottom right hand corner it makes this hiss. I am sat in a quiet room, my fans are near silent so yes I can pick it out easy, playing games . . can't hear it. The thing is, it is there and I have had a few other people come listen just to make sure I'm not losing my mind. Even though I have the Superflower 1000W Plat I'm now even looking at buying another PSU just to eliminate mine as being the cause. Just opening the start menu and moving the mouse over the tiles causes the hiss. I have tried all I can with the kit I have, stripped my pc, disconnected everything, tested it with the mobo out of the case, different ram, multiple formats, bios flash's MOBO, all the Radeon drivers I can find, even different keyboard & mouse.
I must stress, it is not a loud noise, it's not like Stress Test Coil Whine, it's a sudden "HISSSS" and it's damn annoying as I can pick it out now every time.
I even stuck my old 1070 AMP EXTREME in and everything was silent.
I'm at a loss and it's a shame as I am really liking the card. If I knew others also did it I could relax with it but everyone else says they hear no such noise.
What to do