Ok heres my confusion. My previous build consisted in a P35 motherboard, Core 2 Duo E6850 stock speed 3.0ghz, 4GB ram, 150GB raptor X hard drives. And i currently upgraded to an i5 750, p55 motherboard, 4GB ram 2000mhz, WD caviar black 640GB. Now based on all test done, it is obvious that the i5 750 destroys any Core 2 Duo out there and all Quad cores except some i7's. But where my confusion comes in is that i really cant tell a difference between my previous set up and my new set up. I thought i would see difference in loading times for windows, games, ect ect ect. the only realy difference that i do notice is that my i5 works just the same at 2.66ghz than when i had my E6850 at 3.0ghz. Maybe im just not seeing the big picture here, can anybody with knowledge and experience inform me of what im missing here ? i would greatly appreciate it.