Lenovo ThinkPad X61 Tablet, Intel® Core™2 Duo, 1.6 GHz, 12.1", 1024 x 768 pixels, Windows Vista Business Lenovo ThinkPad X61 Tablet. Processor family: Intel® Core™2 Duo, Processor model: L7500, Processor frequency: 1.6 GHz. Display diagonal: 12.1", Display resolution: 1024 x 768 pixels. Operating system installed: Windows Vista Business. Weight: 3.97 lbs (1.8 kg)