CyberpowerPC Gamer Xtreme 5230 Desktop (Black) Intel Core i5 2500K CPU 8GB DDR3 1333 Dual Channel Memory,2 TB SATA II Hard Drive, DVDRW ATI Radeon HD 6770 1 GB PCI-e Graphics 700W Power Supply, Raidmax Helios Gaming Case Microsoft Windows 7 Home Premium 64 bit Operating System