I,M USEING THE 9600XT SO I'M NOT SURE ABOUT THE X.. SERIES CARDS. BUT SO FAR THE BEST DRIVERS I CAN USE ARE NOT THE NEWEST ONES. TRY GOING BACK TO EITHER 4.12 (OLD RELIABLE) OR 5.3 (THE ONE I USE RIGHT NOW) AND DON'T INSTALL THE CONTROL CENTER. IT HAS UNPREDICTABLE PERFORMANCE DEPENDING ON YOUR HARDWARE SETUP