how important is the memory interface to the performace of the card? the 9800pro is a 256 bit interface and the 9600xt is a 128 bit interface, how does that affect direct in game performance? also the 9600xt has the 500spd core to the 9800pro with a 380. I guess the question is, what is more important, the core speed or the fill rate and memory interface? I am guessing the fill rate and memory interface will have a more direct affect on performance than the core speed.