"The Yoga C940 15 is fast and well built, but the battery life and display quality hold it back."
Very good keyboard and touchpad
Outstanding audio quality
Robust construction and attractive aesthetics
Screen is disappointing
Battery is too small
2-in-1 devices are the "all-rounders". In a day, you may need a laptop to write your weekly report, fold it into a tablet to write some notes during a meeting, and then flip the screen over to watch the next episode of The Mandalorian. This is the strength of laptops with 360-degree hinges.
The new Lenovo Yoga C940 15 wants more. With options for processors with up to eight cores, discrete graphics and high resolution, you can now add content creation and light games to the list.
My device cost $ 1,655 and came with a Core i7-9750H, an Nvidia GTX 1650, and a Full HD display (1,920 x 1,080). It even supports Dolby Vision High Dynamic Range (HDR) and Dolby Atmos in its built-in soundbar. Is the Yoga C940 the best laptop for every part of your life?
A media consumption machine in the heart
If you want to use your laptop to edit photos or videos, you need wide and accurate colors, lots of brightness and great contrast. The best 15-inch laptops offer great displays, including the XPS 15 and 16-inch MacBook Pro. Does the Yoga C940 play in this league?
Unfortunately, I don't know exactly. The full HD display of our test device was consistently average – which means a very good, but not necessarily great display today. The brightness was 339 nits above our 300 nits threshold, but not much.
The color gamut was okay at 71 percent of Adobe RGB and 96 percent of sRGB – this is where the typical premium laptop falls – and the accuracy was 3.11 (less than 1.0 is considered excellent). Gamma was 2.7, darker than the perfect 2.2. Only the contrast was above average at 1010: 1.
Simply put, creatives won't be happy with this display. However, thanks to Lenovo's highly effective implementation of Dolby Vision HDR, the Yoga C940 is ideal for watching videos. Switch it to media mode with the keyboard hidden behind the display, and Netflix is an excellent experience.
Thanks to the fantastic built-in soundbar, you don't need headphones to enjoy your TV shows and movies.
Then consider the audio quality with an improved version of the Dolby Atmos speaker system from the Yoga C930. The design has been simplified, and the two-piece hinge has been converted to a one-piece version, which is slimmer. The audio system keeps the two tweeters in the hinge, coupled with two woofers under the housing. The result is a lot of volume, intense clarity and unusually powerful bass for a laptop. You don't need headphones to enjoy your TV shows and movies on the Yoga C940.
However, if you're a creative professional, Lenovo offers a 4K UHD (3840 x 2160) with 500 nits and VESA HDR support. I haven't tested this display, but I found it very good on laptops like the ThinkPad X1 Carbon and Yoga. This 4K version of the Yoga C940 is probably a good option for the creative, but our review sample isn't.
Yes, it is also quick
Most 2-in-1 models, like the otherwise excellent HP Specter x360 15, are synonymous 9th generation Intel Core i7-9750H. This is a 45 watt CPU with six cores This generally provides solid performance for photo and video editing. My Yoga C940 review unit did an excellent job with this chip installed, and it was generally able to keep up with clamshell laptops with the same CPU as the Razer Blade 15 (a gaming laptop, no less).
This was true for synthetic benchmarks such as Geekbench 4 and 5 as well as for our real test, in which a 420 MB video with handbrake is encoded as H.265. In the latter test, the Yoga C940 took less than two and a half minutes to complete the test compared to the Razer Blade 15, which took seven seconds longer, and the Specter x360 15, which took 16 seconds longer.
Laptops like the XPS 15 with the eight-core Core i9 are considerably faster, but as already mentioned, the Yoga C940 can be equipped with the same processor. There is good reason to believe that connecting the Core i9 would produce similar performance based on the excellent thermals it contains.
Regardless of what you think of a 2-in-1 device of this size, the Yoga C940 does not sacrifice performance.
They also don't give up the build quality
I've reviewed a few Yoga 2-in-1 tests, and one thing remains clear: Lenovo is dedicated to making laptops that are armor-like in terms of build quality. The Yoga C940 15 is made of machined aluminum with an excellent fit and workmanship and without bending or bending. That's at least as good as, if not better than, the XPS 15 and Razer Blade 15.
The Yoga C940 makes the most of its conservative design. There is little jewelry adorning this 2-in-1 device, which goes well with Lenovo's goal of making attractive laptops that won't embarrass you in a boardroom. The HP Specter x360 15 has a much more elegant and complex gem-cut design, and I like it. But I don't like the Yoga C940 either, although its design is so much simpler.
You will also find some relatively small bezels that surround the expansive 15.6-inch display, with an inverted notch that the camera is in, which makes it a little easier to grip and lift the display. These bezels make the Yoga C940 slightly smaller than the Specter x360 15 (with very large top and bottom bezels) and the XPS 15 (with smaller bezels), and also slightly lighter than both at 4.18 pounds (compared to 4.81 pounds for the .) HP and 4.5 pounds for the Dell).
The Yoga C940 is tapered at 0.66 to 0.77 inches compared to 0.76 inches than the Specter x360 15, while the XPS 15 is 0.45 to 0.66 inches thinner than both.
In short, you neither give up the build quality nor pack too much size and weight to take advantage of the 2-in-1 flexibility. Lenovo also has two USB-C 3.1 Gen 2 ports with Thunderbolt 3 support and a single USB-A 3.1 Gen 2 port.
This is slightly less than the Specter x360 15 and XPS 15, both of which have a full-size HDMI 2.0 connector. The Yoga C940 also features wireless Intel AX200 Wi-Fi 6 connectivity at speeds up to 2.4 Gbps and Bluetooth 5.0. The XPS 15 offers the same standard, while the Specter x360 15 is limited to Wi-Fi 5.
Everything right where you want it
The Yoga C940 15 uses the typical yoga keyboard, which means the keycaps are nicely shaped and comfortable, but the mechanism is a bit flat compared to the much better ThinkPad versions. Typing is comfortable enough, but I'm longing for a bit more travel and prefer the keyboard of the HP Specter x360 15.
The touchpad is large and supports Microsoft Precision drivers. This makes the entire suite of Windows 10 multi-touch gestures precise and useful. The touch display is equally responsive and easy to use. The Lenovo Active Pen ensures smooth coloring and handwriting. The supplied pen is pushed into a slot in the housing of the Yoga C940 and automatically charged – this is a practical design, even if the pen is a bit smaller than that of competitors.
Password-free registration for Windows 10 Hello is done using a fingerprint reader on the top right of the keyboard deck, which is quick and accurate. I never had to swipe more than once to log in.
There's also a TrueBlock privacy lock that physically blocks the webcam for added privacy. I prefer the HP electronic switch on the Specter line that completely removes an attack vector, but Lenovo's solution is better than putting tape over the webcam.
But does it play?
The Yoga C940 15 has the same Nvidia GeForce GTX 1650 GPU as the XPS 15 and Specter x360 15 and offers roughly the same performance as the former (Digital Trends has not yet tested the latter). It's a bit slower in our series of gaming benchmarks, probably thanks to the slower CPU, and we imagine that you could opt for the Core i9 and have a very competitive midrange gaming laptop.
For example, in Civilization VI, the Yoga C940 was 81 frames per second (FPS) within a single frame rate of the XPS 15 compared to 82 FPS in 1080p and medium graphics, which was a surprise given the CPU difference. The Yoga C940 has also proven itself in ultra graphics. Regarding Fortnite, the Yoga C940 managed 62 FPS at 1080p and high graphics and 47 FPS at epic settings, which also makes it a strong competitor in this popular title. I've seen similar results in Assassin's Creed: Odyssey.
The Yoga C940 15 is a fine mid-range gaming laptop. It's not quite as fast as the better-equipped XPS 15, but it's a free feature
Look elsewhere for excellent battery life
Lenovo has installed 69 watt hours of battery, which is not much for a 15-inch laptop. The Specter x360 15 has 82 watt hours and the XPS 15 a whopping 97 watt hours. Add some quick components, and you can't really expect the Yoga C940 to keep up.
And it doesn't. Looking at our web benchmark, which is likely to best mimic the usual productivity workflow, the Yoga C940 lasted just over seven hours. The XPS 15 with a power-hungry 4K OLED display lasted nine minutes longer and the Specter x360 15 with its 4K IPS display lasted 80 minutes longer.
The Yoga C940 managed to loop a local video for around 10½ hours. This surpasses the 4K XPS 15 by two hours, but falls behind the Specter x360 15 by almost two hours. In our demanding Basemark web benchmark, which puts a load on the CPU, the Yoga C940 was between Dell and HP, each lasting about three to three and a half hours.
The Yoga C940 is unlikely to last a full workday even at 1080p.
The bottom line is that despite its more efficient Full HD display, the Yoga C940 is unlikely to last a full working day. Squeeze the CPU and you probably won't make it in half a day. If you equip the 4K display, the results will be significantly worse. The Specter x360 15 is a bit larger, but offers more space for a larger battery.
The Yoga C940 15 is an outstanding 2-in-1 device, primarily because it offers more power than previously available in the form factor. And that's not nothing – you'll find that it offers a great combination of 2-in-1 flexibility and clamshell performance. The display may not keep up with the best you can buy, but the 4K option can be serviced, and battery life is the only weakness that stands out the most.
Are there alternatives?
The HP Specter x360 15 is another powerful 2-in-1 alternative, though it doesn't offer a Core i9 option. However, it is significantly cheaper at $ 1,380 and has an OLED option if you want vivid and precise colors and blacks.
The best clamshell alternative is the Dell XPS 15, which can also be configured with a Core i9. The 4K IPS panel that Dell chose for the XPS 15 is excellent, and the 4K OLED panel is even better. For a configuration that complies with our Yoga C940 test, you're currently paying $ 1,500 on sale, making the Lenovo $ 155 more expensive.
Finally, check out the Lenovo ThinkPad X1 Extreme and the even more powerful clamshell option. For the same configuration, you spend $ 1,616 on the sale. However, if you have money to burn, you can spend up to $ 3,000 or more on a Core i9 and OLED display.
How long it will take?
The Yoga C940 15 is as sturdy as it comes and feels like it will survive the apocalypse without a scratch. The one-year warranty is disappointing, but we cannot blame Lenovo for this industry standard.
Should you buy it
Yes. You can enjoy a very nice media consumption experience with our verified configuration. You can also upgrade the display and CPU and have a powerful 2-in-1 system that is not only great for Netflix and light games, but also for handling your demanding creativity tasks.