Yet it still gives reason for complaint. The lack of an SD-card reader can only be compensated for with an adapter, which is annoying when using SD-cards a lot. The high case temperatures under load are unpleasant as well and could make working with it on your lap uncomfortable at times.

excellent case; thought-out positions of connections; future-proof ports; flawless workmanship; low weight; quiet in everyday operation; decent system performance; IPS display with stable viewing angles; high-quality input devices; good battery life; mini RJ45 adapter included; 36-month warranty

high case temperatures; CPU-throttling under continuous load; no SD-card reader; microSD-card reader (hard to reach; LAN only possible with included adapter

The latest ThinkPad X1 Carbon (starts at $1,349; $1,629 as tested) is the thinnest and lightest one yet. Lenovo's flagship business ultraportable weighs less than 2.5 pounds, yet has the processing muscle to power through presentations, spreadsheets, and a lot more.

Almost 16 hours of battery life; Weighs less than 2.5 pounds; Bright, clear display; USB-C with Thunderbolt 3 support; Anti-Fry cable protection

Ethernet requires a dongle; Omits OneLink+ dock compatibility; No touch screen option

Except for its steep price, the fifth edition of Lenovo's deluxe 14-inch ultrabook is simply flawless.

Excellence in every detail; Great battery life; Two Thunderbolt 3/USB-C ports

Expensive; High-res display not available until June

The Lenovo X1 Carbon is a serious Ultrabook for the business professional. It also carries a seriously high price tag, especially as you start upgrading components, but in return you get a premium system that's built to last, is every bit as portable as a MacBook Air, and is fast on the draw.

Rugged and Rubberized; Input Done Right; Thin and Light; Fast Storage; Superior Resolution

Not Much of A Gamer; Pricey

Lenovo's ThinkPad X1 Carbon is definitely a high performing ultrabook which offers great performance and mobility in a thin, light package.

Great design; excellent performance; light weight

Price may be a consideration for some

Despite its very light-weight design, you still get some solid components in this ultrabook such as an Intel i5 processor and 8GB of DDR3 RAM. It doesn't have any dedicated video memory which is about the only weakness with this model but you do get a 128GB solid state drive for storage, and also...

It's Lenovo ‘s most beloved business laptop: the X1 Carbon. The fourth-generation model has been released, and it's as beautiful as ever, bringing the best aspects of the X1 Carbon line and refining them with updated hardware, a lighter weight, and a thinner body.

The ThinkPad Carbon X1 is an impressive notebook from Lenovo that offers fast battery charging, a keyboard that changes based on what you are doing and is power

Finding the absolute best productivity laptop has always been a personal mission of mine, and Lenovo's latest iteration of the ThinkPad X1 Carbon came really, really close to ending my search.

Last year's version of the Lenovo ThinkPad X1 Carbon was a fully-capable business Ultrabook that featured a few minor flaws. Unfortunately for Lenovo, these issues kept the Carbon from reaching the pinnacle of the business laptop market.