Lenovo Z510 Laptop Computer - 59400192 - Dark Chocolate - 4th Generation Intel Core i7-4700MQ (2.40GHz 1600MHz 6MB) Processor - 4th Generation Intel Core i7-4700MQ (2.40GHz 1600MHz 6MB) Operating System - Windows 8.1 64 Memory - 8.0GB PC3-12800 DDR3L SDRAM 1600 MHz ; Hard Drive - 1TB 5400 RPM Display:15.6-Inch FHD LED AntiGlare with integrated camera (1920x1080); Graphics:Intel HD Graphics 4600 Bluetooth:Bluetooth Version 4.0; Optical Drive:DVD Recordable (Dual Layer)