Sony VPCEE2E1E/WI. Processor clock speed: 2.1 GHz, Processor family: AMD Athlon II, Processor model: P320. Internal memory: 3 GB, Internal memory type: DDR3-SDRAM, Memory clock speed: 1066 MHz. Total storage capacity: 320 GB, Hard drive interface: Serial ATA, Hard drive rotational speed: 5400 RPM. Display diagonal: 393.7 mm (15.5 "), Display resolution: 1366 x 768 pixels, Aspect ratio: 16:9. Discrete graphics adapter model: Radeon HD 4250 Graphics