Ideapad Y550 T6400 4GB 320GB 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 1066 MHz