Sony VAIO VPC-EB44FX/BJ 15.5-Inch Widescreen Entertainment Laptop (Black) 2.53 GHz Intel Core i3-380M dual-core processor 4 GB of installed DDR3 RAM (1066 MHz; 8 GB maximum) 500 GB SATA hard drive (5400 RPM), Blu-ray Disc ROM drive 15.5-inch LED-backlit display with 1366 x 768 resolution for native 720p HD viewing, Intel HD Graphics Microsoft Windows 7 Home Premium