Toshiba Satellite L550-139, Satellite. Processor frequency: 2.1 GHz, Processor family: Intel Pentium, Processor model: T4300. Internal memory: 4 GB, Internal memory type: DDR2-SDRAM, Memory clock speed: 800 MHz. Total storage capacity: 500 GB, Hard drive speed: 5400 RPM, Compatible memory cards: MMC, SD. Display diagonal: 43.94 cm (17.3"), Display resolution: 1600 x 900 pixels, Aspect ratio: 16:9. Discrete graphics adapter model: AMD Mobility Radeon HD 4650