Alienware X51 AX51R3-1510BLK Desktop (6th Generaton Intel Core i5, 8 GB RAM, 1 TB HDD) NVIDIA GTX 745 Intel Quad Core i5-6400 2 GHz Processor 8 GB DDR4 RAM Included; 16 GB Maxium 1 TB HDD Storage; Tray load DVD Drive (Reads and Writes to DVD/CD); 8 USB Ports No Monitor Included Windows 10 Operating System