i bought a gateway dx 4300-11 like 2 years ago and i think its due for upgrading... ive upgraded the power supply from a 300? to a 550W ive upgraded the video card from whatever it may have had to a geforce GTS 550 (both of these upgrades were done about a year ago) ive been researching trying to figure out how big i can go as far as a processor upgrade. my processor is currently a AMD Phenom II x4 850 2.5 Ghz... i want to hit over 3 Ghz i play PC games not hardcore or anything but id like to run SC2 at Max settings with high FPS as well as Diablo 3 when it comes out.. im not big on PC shooters so no battlefield or MW3 or crysis on my PC.. the motherboard is RS780 please help i just dont wanna purchase something and it not work i dont want to buy a new Mobo and deal with hassle of trying to see if it fits in my tower (gatewat DX 4300-11)