I would like to upgrade my ibuypower series 503 computer for better gaming. It has a 3.5G i7-3770, quad core hyperthreaded. Gigabyte B75M-D3H motherboard. 22" LG monitor 1920x1080. Alpha 700W power supply. 1TB Hard drive. 16332 MB installed memory in 4 chips. windows 7 64bit. not sure what else you would need to know. Thanks for any advice. Tower has a bunch of fans.