CyberpowerPC Gamer Xtreme 5231 Desktop (Black) (Discontinued by Manufacturer) Intel Core i5 2500K processor 8GB (2 x 4GB) DDR3 1333 Dual Channel Memory 2 TB (1 x 2TB) SATA II 3.0 Gbps Hard Drive ATI Radeon HD 6770 1 GB PCI-e Graphics Microsoft Windows 7 Home Premium 64 bit Operating System