Asus 15.6" X502 Laptop Notebook - Intel Celeron / 4GB DDR3 / 320GB HD / Built-in Webcam & Microphone / No CD/DVD Drive / Windows 8 15.6" LED backlit TFT LCD high definition widescreen display Intel Celeron 1007U, 1.5GHz Processor 4GB DDR3 RAM and 320GB HDD storage Integrated Intel HD Graphics Windows 8.1 64 bit Operating System