While its interesting to go on a search for "Loudest Card Ever", it doesn't change the fact that the GTX480 is ridiculously loud. I like my Palit 8800GT party because it has such a quiet (non stock) cooler and modest power demands. At the time it was possible to get both that and great performance, now the only card comparable in those terms would seem to be a VaporX 5770, which is far from a top performer. It seems the future is going to be increasingly noisy. Perhaps super-long video, keyboard and mouse cables are the answer, so one can put the PC in another room from the one that you use it in. Or perhaps in a sound-proofed shed at the far end of your garden?
Of course you'd have to factor in the cost of 'house with garden' and 'sound proofed purpose-built facility' into the cost of the rig, but, er, you guys are "enthusiasts", right? Could probably also do awesome water cooling with garden-sized radiator.