Fallout 3, Crysis Warhead, Borderlands PC?

crysis would run maybe not well but the requirements for processor are 3.2ghz for vista but on windows 7 its lower i dont know exactly what it is tho since yours is 2.1 dual it should run. most new games can run on multiple processors. the video requirements for it are 3200 on vista and again its lower for windows 7.