The RV770 chip has the same shader processors as the previous generation, but ATI have bolstered these up to 800. This increases the transistor count on the HD4850 up to 956m; built using TSMC's 55nm process. ATI's awesome memory ringbus technology stays as well, pumping through the memory bandwidth. The Core clock has been upped to 625Mhz and the memory clock to 993MHz which should also improve the pixel pushing abilities of the little card.



Link: Overclock3D