Actually, you dont need a new gfx card. it would be nice, but, it would also be nice to have an unlimited budget. the tnt2 m64 can be overclocked a good bit. the memory and chip frequencies are not fixed in relation to each other. basically, you can up the memory to about 250 mhz and the chipset to about 175. im about to go overclock mine right now. ill let you know what i overclocked it to and how it worked.