ThinkPad X1 series
| ThinkPad X1 Carbon Gen 1 (2012) | |
| Developer | Lenovo | 
|---|---|
| Product family | ThinkPad | 
| Type | Ultrabook, flipbook, or tablet computer | 
| Release date | June 2011 | 
| Lifespan | 2011–present | 
| CPU | Intel Core | 
| Graphics | Intel Graphics | 
| Related | ThinkPad X series | 
| This article is part of a series on the | 
| ThinkPad | 
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| Chromebook lines (limited to ChromeOS):
 
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| Current lineup table | 
The ThinkPad X1 series is a line of high-end ThinkPad laptop and tablet computers produced by Lenovo. It is a sub-series of the ThinkPad X series designed to be extra premium with material that make them lighter and portable, having been originally classed as Ultrabooks. While the ThinkPad T series is the flagship ThinkPad line, the ThinkPad X1 series's X1 Carbon specifically has been cited as a flagship model since its introduction in 2012.
The current model list contains four product lines:
- X1 Carbon – mainstream premium 14-inch model
- X1 Yoga/2-in-1 – the convertible 14-inch version
- X1 Fold – the first foldable personal computer
Former product lines include:
- X1 Extreme – 15.6-inch (later 16-inch) advanced ultra-light premium laptop; the same model with a Quadro GPU known as ThinkPad P1
- X1 Titanium Yoga – a convertible 13.5-inch version with titanium body
- X1 Nano – a 13.3-inch version – the lightest ThinkPad model