x1 extreme gen 2

The ThinkPad X1 series is a line of high-end ThinkPad laptops and tablets produced by Lenovo.
The current model list contains six lines of machines:

X1 Carbon - mainstream premium 14-inch model
X1 Yoga - the convertible 14-inch version
X1 Titanium Yoga - a convertible 13.5-inch version with titanium body
X1 Extreme - 15-inch advanced ultra-light premium laptop; the same model with a Quadro GPU known as ThinkPad P1
X1 Nano - a 13.3-inch version - lightest thinkpad model
X1 Fold - the first foldable personal computer

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