So recently I was lucky enough to recieve a 4850X2 and as happy that I was to get it, I couldn't help but notice that it is just to noisy for my nice and quiet build.
After much research and a small thought that I would be voiding my warrenty I thought I'd venture into making it queiter. The only problem being that the lack of aftermarket coolers for this card ment that it would not be an easy ride.
The major problem with finding alternative cooling for this card is the proximity of the two R700 cores being so close. This greatly reduces the number of coolers available.
After a bit of browsing and seeing good results with a single GPU, HD 4850 I thought I'd give two Zalman VF900-Cu LED a try.