Lenovo ThinkPad Edge 20C6008SUS 16-inch HD LED Notebook (2.50 GHz Intel Core i5 i5-4200M Processor, 4GB DDR3,  500GB HDD, Windows 7 Pro, 1 Year Lenovo Warranty) Matte Black Intel Core i5-4200M 2.5 GHz (3 MB Cache) 4 GB DDR3L SDRAM 500 GB 7200 rpm Hard Drive 15.6-Inch Screen, Intel HD Graphics 4600 Windows 7 Professional with upgrade to Windows 8 Pro, 6.2-hour battery life