Hi. My current specs are E6600@3.6Ghz,P965-DS3R, 8GB DDR2 and 9600GT512MB. what do i upgrade first? CPU,MB,RAM or VGA? i play DIRT2, Rfactor,CS:SOURCE,L4D2, PES2010,WOW, all at 1080P in a 23" screen. sometimes it seems to sutter in DIRT2 but not much. I noticed that Fallout 3 goes into the 20's at 1080P