ok so i have a asus nvidia gtx 760 2gb vram asus m4a78t-e motherboard 8gb ram cosair vengence amd phenom black edition quad core 3.2ghz corsair 600watt psu windows 7 64bit oh and iv got raid settup with my two 250gb hdd now i haven't wiped my computer since 2009 (when i got it) i get lag on most games e.g arma 3, total war shogun 2, splinter cell blacklist all the newer games really, I got my 760 2gb so i could run all this with no problems my bios is up to date so my graphics driver iv tried c cleaner scanned for viruses i dont what to do really need some help oh and iv defraged also