Lenovo ThinkPad Edge E525, AMD A6, 39.6 cm (15.6"), 1366 x 768 pixels, 4 GB, 750 GB, Windows 7 Professional Lenovo ThinkPad Edge E525. Processor family: AMD A6, Processor model: A6-3420M. Display diagonal: 39.6 cm (15.6"), Display resolution: 1366 x 768 pixels. Internal memory: 4 GB, Internal memory type: DDR3-SDRAM. Total storage capacity: 750 GB, Storage media: HDD, Optical drive type: DVD±RW. On-board graphics card model: AMD Radeon HD 6520G. Operating system installed: Windows 7 Professional. Product colour: Black. Weight: 2.58 kg