ya my bad. it is sm3.0. the 4.0 was referring to 'CineFX 4.0 engine' and 'Intellisample 4.0 technology'
well, ya that card is way better than the 7600gt. but the only problem i have with ati, is the dual gCard setup. i think you gotta have an external link to get two cards together. and the crossfire-mastercard is hella expensive. but the x1300 and x1600 series's fix that problem
also, would one ati video card work in a 'nForce4 sli' motherboard?