hello there i've asked a few questions on here and i dont get this. my computer which originally was an acer x1200 athlon 64 x2 5400+ 2.8 ghz mainboard is acer wmcp78m, trandscend information 4gb ddr2 ram 180gb hdd onboard video onboard sound and vista as the os. well i ripped it all out and slapped it in a new mid tower case added a cooler master 600 watt power supply and a evga gts450 the one that came with free performance boost and seems to work lovely except one things my games lag like crazy even in 800x600. i mean these are games i should be ripping apart maybe except for 1 or 2. half life 2 e1, l4d 2, medal of honor airborne and the 2 that are iffy are crysis but i beat the recommended specs and mafia 2 which my processor might be iffy. so i dont know what gives. i did a direct driver update from nvidia a couple days ago version 267.59 tried to roll it back didnt help reinstalled didn't help. on crysis it was putting it med specs before, now it putting it at low in 800x600 mode. i dont know whats up. is there anyone who can help me? thank you very much for any ideas oh by the way i dont mess with overclocking nothing or turning anything up or down never knew how really but kinda i do