<b>Higher Performance When You Need It Most</b> Intel® Turbo Boost Technology 2.01 accelerates processor and graphics performance by increasing the operating frequency when operating below specification limits. The maximum frequency varies depending on workload, hardware, software, and overall system configuration. 2.0 Legacy Intel® Core™ Processor Intel Core i5-2xxx Lenovo X220 Tablet, Intel® Core™ i5, 2.5 GHz, 12.5", 1366 x 768 pixels, 4 GB, Windows 7 Professional Lenovo X220 Tablet. Product type: Hybrid (2-in-1), Form factor: Convertible (Swivel). Processor family: Intel® Core™ i5, Processor model: i5-2520M, Processor frequency: 2.5 GHz. Display diagonal: 12.5", Display resolution: 1366 x 768 pixels, Touchscreen. Internal memory: 4 GB. Optical drive type: DVD±RW. On-board graphics card model: Intel® HD Graphics 3000. Operating system installed: Windows 7 Professional. Product color: Black. Weight: 3.88 lbs (1.76 kg) https://www.pcmag.com/article2/0,2817,2392452,00.asp The Lenovo ThinkPad X220 Tablet ($1,579 direct) strikes a nice concession between ultraportable business laptop and multitouch Windows 7 tablet. Some businesses may be hard pressed to give up its QWERTY ways for a full tablet or compromise losing time ... Intel Core i5 processor outpaces the competition, Largest hard drive in its class, Rugged, ergonomic design, Superb physical keyboard and pointing controls, Melds Windows 7 with a versatile combination of touch and physical controls, On the heavy side, Screen glare, The Lenovo ThinkPad X220 takes top honors among tablet PCs, combining choice aspects of a capable ultraportable business laptop with a multitouch Windows tablet. ... http://www.tabletpcreview.com/tabletreview/lenovo-thinkpad-x220-tablet-review/ The ThinkPad X220 Tablet is Lenovo's latest and greatest convertible laptop. As part of Lenovo's recent ThinkPad X series refresh that includes the excellent X220 notebook, this Windows 7 tablet features a 12.5-inch display, Wacom digitizer, and Intel's n... Excellent build quailty, Superb performance, Great Lenovo keyboard Screen rotates only 180 degrees in one direction, Gets a bit hot when stressed, No USB 3.0 http://www.ruggedpcreview.com/3_slates_lenovo_x220_tablet.html The original IBM ThinkPad, all the way back in 1992 or so, was a pen computer, and a tablet at that. Consumer tastes dictated a switch to a notebook convertible format, and pen computing historians may remember the ThinkPad 360PE and 750P, both noteboo...