Ati Radeon Hd 4770 (rv740) 512mb
 

The card left a very good impression in general. Even if it was sometimes outperformed by competing products, we must admit that HD 4770 is faster than 9800 GT in most cases. This card defeats HD 4850 in those tests, where fillrate plays an important role (HD 4770 offers higher fillrates owing to a very high GPU clock rate).

http://ixbtlabs.com/articles3/video/rv740-part1-p1.html