PowerColor HD 7850 SCS3 passive 1 GB @ techPowerUp
 

PowerColor's HD 7850 SCS3 is a fanless implementation of the HD 7850, which means that it does not emit any noise while offering enough performance for serious gaming in full HD. With a price increase of $25 over the reference design, it's not too expensive either.

http://www.techpowerup.com/reviews/P..._SCS3_passive/