Had an AMD 5400+ and an MSI mobo...replaced both...AMD Phenom II x4 945 and new MSI mobo 790XT-G45...Now when playing games they are lagging horribly...updated bios...not really sure where to do...OS is windows 7 64...I've run 3dmark06 the graphics benchmarking is great but the cpu is horrible running at 2-3 FPS