Lenovo ThinkPad Edge E555 20DH002QUS 15.6" AMD Dual Core A6-7000, 4GB RAM, Windows 7 Pro Laptop Computer, 1 Year Warranty Processor: AMD A6-7000 Dual Core Processor (1M Cache, 2.2GHz - 3.0GHz) 4 GB DDR3L SDRAM 500 GB 5400 rpm Hard Drive 15.6-Inch Screen Windows 7 Pro 64-bit pre-installed / Windows 8 Pro 64-bit Upgrade Ready