ASUS Radeon EAH6850 DirectCU
 

We've seen quite a few grapihcs cards from ASUS and we've come to expect big things from from them, and their new AH6850 DirectCU is no different. This card has a non-reference heatsink and touts some excellent overclocking headroom with voltage tweaking capabilities. The overclocking is so good, in fact, we actually topped out both Smart Doctor and Afterburner without any signs of stress from the card.

http://www.pureoverclock.com/article1119.html