Lenovo X1 Carbon Thinkpad 14-Inch Ultrabook (20A7002QUS) Black Intel Core i7-4600U 2.1GHz (3.3GHz w/ Turbo, Dual Core, 4MB Cache) Processor 8GB RAM DDR3L-1600MHz (soldered to system board, no sockets) 256 GB Solid-State Drive 14" HD+ Screen (1600 x 900) Windows 7 Pro 64-bit, preinstalled through Windows 8.1 Pro Downgrade Rights, 9-hour battery life