Alienware AX51-9013BK Desktop (3.4 GHz Intel Core i7-3770 Processor, 8GB DDR3, 1TB HDD, Windows 7 Home Premium) Black [Discontinued By Manufacturer] Intel Core i7-3770 3.4GHz Quad 8 GB DDR3 RAM 1000GB 7200rpm Hard Drive Windows 7 Home Premium 64-bit Graphics Coprocessor: NVIDIA GeForce GTX 555