You should buy this for gaming purposes:

Intel Core i7-4960X LGA2011 Six-Core 15MB L3 3.6-4GHz
ASUS X79 DELUXE LGA 2011 Ivy Bridge-E Ready ATX
G.Skill 32GB (4 x 8GB) DDR3 2133MHz 1.6v
Three EVGA GeForce GTX 780 Ti Superclocked 3GB 3-Way SLI
SAMSUNG 840 EVO 1TB SATA III SSD
Western Digital Caviar Black 2TB 5 yrs war. WD2003FZEX
ASUS SATA 24X DVD Burner
EVGA SuperNOVA 1000W P2 80 PLUS Platinum Modular
Thermaltake Core V71 Extreme 3x200mm+1x140mm case fans
Noctua NH-D14 SE2011 CPU Cooler
Sound Blaster Omni 5.1 USB Sound Card