The HD4670 set-up will not be as good as the 8800GTX. Acceptable performance at 1680x1050 for the HD4670, nut the 8800GTX should be able to handle the games at 1920x1080.
Originally posted by GGINS:hmmm what if i change graphics to 4850? Will it be able to handle semi-high settings?
4850 is equivalent to a GTS250, which can handle 1920x1080 decently well, better than 8800GTX
2GB ram you need 64bit for what .