AMD Graphics Radeon HD 6850 Review
 

AMD made it clear to us that the 6800 series are a refresh of the 5800 series, and while they have made some performance tweaks and improvements (specifically in things like tessellation) there is no ground breaking performance update here, and the cards sit pretty much where their 5800 series counterpart did.
http://www.xtremecomputing.co.uk/review.php?id=540