AMD & PowerColor HD 3850 Review
 

One could say that AMD finally got bored with dragging its offer and
decided to finally do some decent work with the new models. Here we have a
completely new card, destined to impress both the press and the market. The
architecture plans were based on the experiences with the R600, with
significant new changes. Is R670 really all that R600 was meant to be?

http://www.insidehw.com/content/view/326/9/