Sony VAIO VPC-Z133GX/B 13.1-Inch Laptop (Black) 2.53 GHz Intel Core i5-460M dual-core processor 4 GB of installed DDR3 RAM 128 GB SATA solid state drive (SSD), 8x multi-format DVD drive 13.1-inch LED-backlit display, Dynamic Hybrid Graphics system Microsoft Windows 7 Professional