Lenovo ThinkPad T440p 20AN006DUS 14-Inch Laptop (Black) Intel Core i5-4300M 2.6 GHz processor (2 cores, 3 MB Cache). 4 GB DDR3L SDRAM, 500 GB 7200 rpm Hard Drive. 14-inch 1600x900 LCD Screen, Intel HD Graphics 4600. Intel 802.11abgn wireless LAN, WWAN Option, 7.4-hour battery life. Windows 7 Professional Upgradable to Windows 8 Pro , 64 bit operating system.