The fastest ultraportable around. When your need for speed and your need for mobility converge, look to the ThinkPad X220 to rise to the occasion. The same full-powered 2nd generation Intel® Core™ processors that fuel many 14" and 15" laptops are built right into the X220's slim ? it's 2mm thinner than previous generations ? frame. Energize graphics-intense programs with two-times-faster Intel HD Graphics, and instantly increase your startup and shutdown times with Lenovo Enhanced Experience 2.0 for Windows® 7, with optional RapidDrive. Battery that lasts as long as you do. Stay unplugged and on-the-go all day with a multitude of battery options for your X220. Get up to 15 hours with ThinkPad Battery 29++ (9-cell), but if that isn't long enough to keep your engine roaring, also attach the slim, external ThinkPad slice battery for up to 23 hours of juice.