IdeaPad Y550 - Intel Core 2 Duo Processor T6400 (2.0GHz; 2MB; 800MHz); Genuine Window Vista Home Permium 64 SP1; 15.6" widescreen LED Backlit WXGA VibrantView (1366 x 768); Mobile Intel Graphics Media Accelerator X4500MHD (Up to 1759MB); 320GB SATA (5400 rpm); 4GB Hard Drive; Up to 8GB PC3-8500 DDR3 SDRAM 1066MHz; Dual Layer DVD Recordable; 1.3 megapixel integrated camera; 2 stereo speakers + 1 sub-woofer with Dolby Home Theatre TM 2 Certification; Array Build in Microphone with Echo Cancellation and Noise Reduction; 10/100/1000M Ethernet; Intel Wifi Link 5100 AGN; Norton Internet Security Software; Kensington lock slot; 6-cell Li-Ion battery; VeriFace 3.5; Easy Capture 3.5; OneKey Rescue System 6.0