the nVidia 7300GT have already beaten up the X1300 and certain X1600 models. However, the X1650 Pro is better than certain 7600GT. Anyone tried that before the X1650 Pro? Btw, a Physics card is way too expensive. I rather it'll be inside the graphics card and become mainstream.
I'm thinking it would be better to keep the two seprate until they perfect the technology, plus graphics cards already cost too much, adding physics acceleration to the cards i'm sure won't help.