Longest battery life available; Durable design; Comfortable palm rest; Wide viewing angles
Low-res screen comes standard; Weak audio
The Lenovo ThinkPad X240 delivers amazing battery life, powerful performance and a durable design, making it the best business ultraportable yet.
Lenovo's X200 series of lightweight ThinkPads have long been some of the most lightweight, long-lasting business laptops on the market. The 12.5-inch ThinkPad X240 takes portable productivity to the next level with a powerful Intel 4th Generation Core Series processor, an improved design and an optional full-HD touch screen. Better still, with its extended battery, this $1,555 ($1,049 to start) Ultrabook lasts longer on a charge than any other laptop on the market, making it an ideal choice for users on the go.
The Lenovo ThinkPad X240 has the same simple-yet-elegant, black aesthetic as prior generations of ThinkPads. However, ThinkPad aficionados will notice some significant differences between this laptop and the X230, its 2012-era predecessor. The palm rest, which was uncomfortably shallow on all X200 series laptops dating back to 2008, has been lengthened, allowing more room for resting your hands while typing. On the other hand, Lenovo has replaced the attractive soft-touch lid on the X230 with one that has a plain, matte-black texture.
Like many other ThinkPads, including the 14-inch T440s, the X240 is made to take a licking. An internal roll cage, carbon-fiber lid and magnesium bottom help the laptop survive drops and dings, while a spill-resistant keyboard keeps the system safe from your drinks. The ThinkPad X240 is also MIL-SPEC tested to endure extreme temperatures, vibrations, dust and atmospheric pressure.
MORE: 10 Best Lenovo Laptops
At 12 x 8.2 x 0.8 inches and 3.2 pounds with its 3-cell battery and touch screen, the ThinkPad X240 is easy to carry but not quite as light as the 3-pound Dell Latitude E7240 (12.2 x 8.3 x 0.79 inches). Adding the 6-cell extended battery increases the X240's weight to 3.6 pounds and adds a 0.3-inch bulge to the bottom, which tilts the back of the system upward. However, if you configure the X240 without a touch screen, it will be 0.1 to 0.2 pounds lighter.
DisplayThinkPad T440s we tested. Gradients, such as the silver in the Avengers logo, appeared grainy. Lenovo will be offering a 1080p screen option on the X240 in the near future.
Registering 325 lux on our light meter, the display is well above the 213-lux category average and the 263-lux MacBook Air 13-inch, but behind the 411-lux Dell Latitude E7240. The 10-point touch digitizer was extremely responsive throughout our testing, even allowing us to draw with all our fingers at once in Windows Paint.
Forget about using the X240 as a stereo. Though it was good enough for watching videos, the laptop's bottom-mounted speakers delivered weak, quiet audio in our tests. When we tried playing both the bass-heavy "Forget Me Nots" and the guitar-centric "Fight for Your Right to Party," sound was barely loud enough to fill a small room. The system comes with Dolby v4 audio software, which helps make the sound better than it would have been without it, but it still doesn't make the audio pleasant. Hitting 80 decibels on our sound meter, the X240 is well below the 84 dB category average when sitting on a table but sounded even lower when sitting on our lap.
However, the keyboard also has a bit less vertical travel than last year's X230 and some other current ThinkPads. Though the key feel is still better than you'll find on 95 percent of laptops, the X240 just isn't as responsive as the ThinkPad T440s, or even the Dell Latitude 7740, which has more travel despite its thinner profile. We were able to achieve our typical rate of 86 words per minute on the Ten Thumbs Typing Tutor test, but with a higher-than-normal 2 percent error rate. In comparison, we achieved a much stronger 92 words per minute with a 1 percent error rate on the ThinkPad T440s.
Pointing Stick and Touchpad
Ports and Webcam
The HD webcam captured reasonably sharp, bright images of our face under decent indoor lighting. However, when we took a shot in a dark area of our living room, the picture was extremely noisy.
The ThinkPad X240 stayed pleasantly cool throughout our testing. After streaming a video for 15 minutes, the touchpad measured a comfortable 81 degrees, the keyboard a pleasant 92 degrees and the bottom a reasonable 93 degrees. We consider temperatures below 95 degrees comfortable.
The X240's 256GB SSD allowed it to boot Windows 8 Pro in a speedy 13 seconds -- quite a bit faster than the 20-second category average and a little faster than the Dell Latitude E7240 (17 seconds). The drive took just 36 seconds to complete the LAPTOP File Transfer test, which involves copying 4.97GB of mixed media files. That's a transfer rate of 141.4 MBps, which is well above the 104.9-MBps category average but a bit short of the Dell Latitude E7240's 164.2 MBps rate and the 242.4 MBps offered by the MacBook Air 13-inch.
The ThinkPad X240 completed the OpenOffice Spreadsheet Macro test -- in which we match 20,000 names up against their addresses -- in just 5 minutes and 22 seconds. That time is almost a minute faster than the category average (6:16) and 11 seconds quicker than the iPad Air 13-inch, but a tad slower than the Dell Latitude E7240 (4:45).
The X240 managed a playable rate of 31 frames per second in "World of Warcraft" with autodetect settings, but that rate dropped to 17 fps when we turned the special effects up. Those numbers fall slightly below the 39 / 20 fps category average. The Dell Latitude E7420 notched 20 fps at its standard 1920 x 1080p resolution, which is higher than the X240 we tested.
If you're willing to deal with a little extra bulk, the ThinkPad X240's 6-cell battery will give you the longest endurance of any laptop on the market. With its 6-cell extended battery on board, the X240 lasted an impressive 20 hours and 28 minutes on the LAPTOP Battery Test, which involves continuous Web surfing over Wi-Fi at 40 percent brightness. That's the longest time we've ever seen on a laptop without a battery slice attached and only 18 minutes behind last year's ThinkPad X230 with its bulky battery slice, our all-time battery-life leader.
If the added 0.4 pounds and the 0.3-inch bulge on the bottom of the laptop that the 6-cell battery requires are too much for you, you can opt for the 3-cell battery, with which the X240 lasted a solid 7 hours and 40 minutes on our test. Both times are well above the 6:19 ultraportable category average and the Dell Latitude E7240's time of 5 hours and 27 minutes. However, the 13-inch MacBook Air lasted 11 hours and 40 minutes.
Our review configuration of the ThinkPad X240 carries an MSRP of $1,555. For that price, you get the laptop with a 1.6-GHz Core i5-4200U CPU, 8GB of RAM, a 256GB SSD, a 1366 x 768p IPS touch screen and Windows 8 Pro. However, the system starts at $1,049. For that price, you get a 1.7-GHz Core i3 CPU, 4GB of RAM, a 500GB hard drive, a 3-cell battery and a nontouch, non-IPS display.
Lenovo says it will be adding a full-HD screen option at some point in the near future. We highly recommend that you purchase the extended 6-cell battery, which costs just $5 more, and the 1920 x 1080p display when it is available.
Software and Warranty
Lenovo backs the ThinkPad X240 with a standard one-year warranty on parts and labor. Extended warranties that go up to four years, on-site service and accidental damage protection are available for prices ranging from $59 to $349. See how Lenovo fared in our Best & Worst Laptop Brands report and Tech Support Showdown.
VerdictThinkPad T440s, which weighs 0.6 pounds more and lasts only 14 hours on a charge. Those looking for something a little lighter may want to consider the 3-pound MacBook Air 13-inch, which lasts more than 11 hours on a charge. However, if you want the longest-lasting productivity powerhouse, the ThinkPad X240 is your best choice.
|CPU||1.6-GHz Intel Core i5-4200U|
|Operating System||Windows 8 Professional|
|RAM Upgradable to||8GB|
|Hard Drive Size||256GB|
|Hard Drive Speed|
|Hard Drive Type|
|Secondary Hard Drive Size|
|Secondary Hard Drive Speed|
|Secondary Hard Drive Type|
|Optical Drive Speed|
|Graphics Card||Intel HD Graphics 4400|
|Wi-Fi Model||Intel Centrino 7260|
|Touchpad Size||3.9 x 2.6 inches|
|Ports (excluding USB)||Kensington Lock|
|Ports (excluding USB)||Ethernet|
|Ports (excluding USB)||DisplayPort|
|Ports (excluding USB)||Combo Headphone/Mic Jack|
|Ports (excluding USB)||VGA|
|Ports (excluding USB)||USB 3.0|
|Card Slots||4-1 card reader|
|Warranty/Support||one year standard parts and labor|
|Size||12. x 8.2 x .8 inches|
|Weight||3.2 pounds (regular battery) / 3.6 pounds (extended)|