Lenovo ThinkPad T540p 20BE003NUS 15.6-Inch Laptop (Black) Intel Core i7-4600M 2.9 GHz (4 MB Cache) 4 GB DDR3L SDRAM 500 GB 7200 rpm Hard Drive 15.6-Inch Screen, NVIDIA GeForce GT 730M / Intel HD Graphics 4600 Windows 8 Professional, 11-hour battery life