Lenovo ThinkPad X230 Tablet 34352TU 12.5" LED Tablet PC - Core i7 i7-3520M 2.9GHz - Black Processor: Intel CoreTM i7-3520M Dual Core Processor (4M Cache, 2.90GHz - 3.6GHz) 35W RAM: 4GB (4GB x 1) DDR3 1600Mhz / Hard Drive: 500GB 7200rpm HDD Optical Disc Drive: DVD Super Multi Burner / Operating System: Windows 7 Professional x64bit Manufacturer Warranty: 3 years warranty