CentralNotice From Wikipedia, the free encyclopedia Jump to navigation Jump to search ThinkPad X1 series Lenovo ThinkPad X1 Carbon (2012) Developer Lenovo Product family ThinkPad Type Ultrabook or Tablet computer Release date June 2011 ; 9 years ago ( 2011-06 ) CPU Intel Core Predecessor ThinkPad X series The ThinkPad X1 series is a line of high-end laptops and tablets produced by Lenovo . The current model list contains three lines of laptops: X1 Carbon - mainstream premium 14" model, X1 Yoga - the convertible 14" version, and X1 Extreme - 15" advanced ultra-light premium laptop; the same model with a Quadro GPU known as ThinkPad P1 . The daughter lines are a partially discontinued 13" Tablet line ( X1 Tablet ) and announced 13.3" foldable laptop ( X1 Fold ). 1 Launch 2 Models 2.1 2011 - 0th generation 2.1.1 X1 2.2 2012 - 1st generation 2.2.1 X1 Carbon 2...