The ATI Radeon HD 4870 is a video card reference specification designed by AMD/ATI. It includes a 55nm RV770 GPU (graphics processor) and 512MB of GDDR5 memory, a state of the art addition, connected through a 256-bit interface. With 956 million transistors, it tops ATI's last highest end dual GPU card, the Radeon 3870x2 - toping its own last generation model the 3870 by an even larger margin. Launched at a suggested retail price of 299 dollars, the Radeon HD 4870 has been selling quite well, beating or at the very least matching Nvidia's offerings in performance as well as price.
