Look into the Gigabyte 1GB version, dual fan setup, sits about 68c with a core overclock to 800. You cannot hear the fans at 100%, I know how loud my 4870 was, this doesn't even compare.
Yea, I have that Gigabyte GTX460OC 1 GB model aswell, with the two fans.
Upgraded from a Radeon 5770. I can't believe how silent my system has become. The 5770 had a nasty whine in the fan (I have the original reference shroud cooler one, from Sapphire).