I am very happy with my Asus Strix RX470 4GB - I have a Sapphire Nitro+OC 480 4GB and, honestly, it's like a fast car with all the seats taken out of it. If you don't care about a card that literally overpowers every other sound emmited by other electronics/PC's in the room/open plan place, even my god damn refrigerator gets drowned out by the RX480 @ 65%.

I dunno why I just went off on fan noise because I really dont care as long as it hashes well - point being, I think, was that the Asus 470 has been rock solid stable, OCable and SUPERFKNQUIET... I would trust it not to say a word in court if it was a witness to some horrid crime I'd somehow committed.