Alienware m15x-216CSB 15.6-Inch Laptop (Cosmic Black) [Discontinued By Manufacturer] 1.6GHz Intel Core i7-720QM Processor with 6MB cache and Turbo Mode up to 2.8GHz 4GB DDR3 SDRAM at 1066MHz 500GB, 7200 RPM SATA hard drive; 8x CD/DVD Burner (DVD+/-RW Drive) 15.6" High Definition WLED display with 1600 x 900 resolution Genuine Windows 7 Home Premium (64-Bit) operating system