Gigabyte`s HD 7770 OC comes with a massive clock improvement over the AMD reference design. Operating at 1100 MHz ensures that the card has a healthy performance advantage over other boards. Memory clock is also increased at 1250 MHz."
Slow computer got you down? Maybe a hardware upgrade should be in your cards, if so this guide to the Fundamentals of Upgrading a PC is an invaluable read. PCSTATS Tips