i have a m2n mx se plus asus motherboard which has an onboard 6150 se graphics card.though my pc is covering up the minimum requirements for gta3, far cry,prince of persia warrior within yet there is a problem in running them.sometimes the games are not running smoothly.more precisely the game is cutting i.e sometimes it runs fast,again slow and fast again while playing at one stretch.will buying a new graphic card solve the problem?