Alienware X51 AX51-5728BK Desktop (Matte Stealth Black) [Discontinued By Manufacturer] Intel Core i5-3450 3.1 GHz Processor (6MB Cache) with Hyper-Threading and Turbo Boost Technology 2.0 8GB DDR3 RAM 1 TB 7200 rpm Hard Drive 1GB GDDR5 NVIDIA GeForce GT 640 Windows 8