Dell Alienware X51 (AX51R2-1259BK) Gaming Desktop Computer With 3rd Gen Intel Core i3 Processor, Windows 7 Intel Core i3-4130 processor 6GB DDR3 at 1600MHz memory 1TB (1000GB) hard drive holds thousands of songs, photos and documents. 1GB of dedicated graphics memory for high-performance gaming and video. Features nVidia GeForce GTX 645 graphics. Microsoft Windows 7 Home Premium 64-bit. Offers powerful features and is easy to use.