To be honest, the vapor-X cooling design that Sapphire has been using isn't much quieter. We should see them in Novmeber, you must keep in mind that supply of the stock versions are quite low right now.
When does the 5850 vapor-x card come for example, because the reference cards are way 2 loud.
are you sure it's loud?
my 5770 is pretty quiet compared to the passive cooled 4350 i had in the case previously. I assume the 5850 is similar (cooling solution). and prob only loud running full steam in which case the sounds from the game will drown it out anyway.