Dell Inspiron i15R-2031MRB 15.6-Inch Laptop (Mars Black) [Discontinued By Manufacturer] 2.26GHz Intel Core i3-350M with 3MB cache 4GB Dual Channel DDR3 SDRAM at 1333MHz (two DIMMs) 640GB, 5400 RPM SATA hard drive; 8x CD/DVD Burner (DVD+/-RW Drive) 15.6-inch high-definition WLED display with 1366 x 768 resolution; HDMI output Genuine Windows 7 Home Premium (64-Bit) operating system