Lenovo Yoga C740 (14) review – strong body plus 10th Gen Intel processors

Lenovo is simply the king of convertible laptops. They have arguably the best looking and the most versatile 2-in-1 range in the face of Yoga. One of the more-premium oriented Yogas is the Yoga C740.

We were able to get our hands on a 14″ version of the laptop, which (wait for it) is the first laptop in our office to feature the latest 10th Generation of Intel’s ULV processors.

As we were eager to test the new processor, we had to stay focused and not miss any issues. After all, we are talking about a convertible that is likely going to use for work, as it comes with a free stylus inside the box.

You can check the prices and configurations in our Specs System: https://laptopmedia.com/series/lenovo-yoga-c740-14/

Contents


Specs Sheet

Lenovo Yoga C740 (14) review – strong body plus 10th Gen Intel processors - Specs

  • BOE NV156FHM-N65 (BOE0855)
  • Color accuracy  4.9  1.7
  • HDD/SSD
  • up to 2000GB SSD
  • M.2 Slot
  • 1x 2280 PCIe NVMe 3.0 x4  See photo
  • RAM
  • up to 16GB
  • OS
  • Windows 10 Home, Windows 10 Pro
  • Battery
  • 51Wh, 4-cell, 51Wh, 4-cell, 60.3Wh
  • Dimensions
  • 321.8 x 214.6 x 15 mm (12.67" x 8.45" x 0.59")
  • Weight
  • 1.37 kg (3 lbs)
  • Ports and connectivity
  • 2x USB Type-C
  • 3.2 Gen 1 (5 Gbps), Power Delivery (PD), DisplayPort
  • 1x USB Type-A
  • 3.2 Gen 1 (5 Gbps)
  • Wi-Fi
  • 802.11ac
  • Bluetooth
  • 5.0
  • Audio jack
  • 3.5 mm combo
  • Features
  • Fingerprint reader
  • optional
  • Backlit keyboard
  • Optical drive

What’s in the box?

Apart from the obvious 65Wh power brick and the paper manuals, we found a Lenovo Pen inside the box, which is pretty exceptional from Lenovo. Of course, the Pen is optional and you might or might not receive it, depending on your region.


Design and construction

So, the Lenovo Yoga C740 (14) is an all-metal convertible laptop that has a pretty thin and lightweight body. It stops the scales at 1.40 kg and has a height of 14.9 mm in its thinnest point and 16.9 mm at its thickest. We have to say that the dark-grey matte finish manages to give the laptop a premium look, although it is somewhat of a fingerprint magnet. Aside from this color, the Yoga C740 (14) comes in a silver outfit, as well.

Quite expectedly from a 2-in-1, we weren’t able to open the lid of the laptop with a single hand. However, we were certainly impressed by the strength of the lid itself – this thing barely moves when you try to bend it around itself. The strength of this laptop is likely boosted by the use of metal on the back and glass on the front of the display.

Next, we have the base of the device, which is also very strong. Unlike some of its competitors, things are pretty busy around here. There is a rather comfortable keyboard, with a slightly shallow key travel to our likings, but yet very tactile feedback. We are also fans of the speakers that are surrounding the keyboard in a pretty Apple-esque fashion.

Then, there is a matte glass on top of the touchpad, which feels agile and snappy. Last, but not last place, you can find a fingerprint reader just beneath the “Right” arrow key.

Since the speakers are at the base of the laptop, and the hot air is getting out of the laptop from its back, the only thing you can see on the bottom plate is the single ventilation grill.


Ports

Lenovo shouldn’t be very proud of the I/O selection on this laptop. It has two USB Type-C 3.1 (Gen. 1) ports on the left (both can be used for charging), as well as a headphone jack, while the right side houses only one USB Type-A 3.1 (Gen. 1) port and the power button.


Disassembly, upgrade options and maintenance

The Yoga C740 (14) has 9 Torx-headed screws that hold the bottom panel to the chassis of the device. After you remove them, make sure you are very careful with your plastic pry tool, because the package is pretty tight.

Despite the usage of a pretty standard cooling setup, it is interesting to see how short and fat the heat pipe in use actually is. Moreover, around 50% or more of its length is concentrated in making contact with the heat spreader.

Sadly, you won’t be able to upgrade Yoga C740 (14)’s memory, as all of the chips are soldered. Ultimately, this means you are left with the maximum amount of RAM being 16GB. At least Lenovo didn’t solder the SSD chips but is rather using an M.2 PCIe x4 slot to your favor.

Battery-wise, there is a 51Wh pack, which takes a good amount of the bottom half of this device.


Display quality

Lenovo Yoga C740 (14) has a touchscreen Full HD IPS panel, BOE NV140FHM-N65 (BOE0855). Its diagonal is 14-inch (35.5 cm), and the resolution – 1920 х 1080p. Additionally, the screen ratio is 16:9, the pixel density – 157 ppi, their pitch – 0.161 х 0.161 mm. The screen can be considered Retina when viewed from at least 55 cm (from this distance, the average human eye can’t see the individual pixels).

This laptop has comfortable viewing angles. We offer images at different angles to evaluate the quality.

The maximum measured brightness is 310 nits (cd/m2) in the middle of the screen and 297 nits (cd/m2) average across the surface with a maximum deviation of 7%. The Correlated Color Temperature on a white screen and at maximum brightness is 6410K – slightly warmer than the 6500K temperature for sRGB, which is great. The average color temperature through the grey scale before profiling is 6240K.
In the illustration below you can see how the display performs from uniformity perspective. The illustration below shows how matters are for operational brightness levels (approximately 140 nits) – in this particular case at 82% Brightness (White level = 142 cd/m2, Black level = 0.12 cd/m2).
Values of dE2000 over 4.0 should not occur, and this parameter is one of the first you should check if you intend to use the laptop for color-sensitive work (a maximum tolerance of 2.0 ). The contrast ratio is excellent – 1170:1 (1060:1).

To make sure we are on the same page, we would like to give you a little introduction of the sRGB color gamut and the Adobe RGB. To start, there’s the CIE 1976 Uniform Chromaticity Diagram that represents the visible specter of colors by the human eye, giving you a better perception of the color gamut coverage and the color accuracy.

Inside the black triangle, you will see the standard color gamut (sRGB) that is being used by millions of people in HDTV and on the web. As for the Adobe RGB, this is used in professional cameras, monitors, etc for printing. Basically, colors inside the black triangle are used by everyone and this is the essential part of the color quality and color accuracy of a mainstream notebook.

Still, we’ve included other color spaces like the famous DCI-P3 standard used by movie studios, as well as the digital UHD Rec.2020 standard. Rec.2020, however, is still a thing of the future and it’s difficult for today’s displays to cover that well. We’ve also included the so-called Michael Pointer gamut, or Pointer’s gamut, which represents the colors that naturally occur around us every day.

The yellow dotted line shows Lenovo Yoga C740 (14)’s color gamut coverage.

Its display not only covers 91% of the sRGB/ITU-R BT.709 (web/HDTV standard).

Our “Design and Gaming” profile delivers optimal color temperature (6500K) at 140 cd/m2 luminance and sRGB gamma mode.

We tested the accuracy of the display with 24 commonly used colors like light and dark human skin, blue sky, green grass, orange, etc. You can check out the results at factory condition and also, with the “Design and Gaming” profile.

Below you can compare the scores of Lenovo Yoga C740 (14) with the default settings (left), and with the “Gaming and Web design” profile (right).

The next figure shows how well the display is able to reproduce really dark parts of an image, which is essential when watching movies or playing games in low ambient light.

The left side of the image represents the display with stock settings, while the right one is with the “Gaming and Web Design” profile activated. On the horizontal axis, you will find the grayscale and on the vertical axis – the luminance of the display. On the two graphs below you can easily check for yourself how your display handles the darkest nuances but keep in mind that this also depends on the settings of your current display, the calibration, the viewing angle, and the surrounding light conditions.


Response time (Gaming capabilities)

We test the reaction time of the pixels with the usual “black-to-white” and “white-to-black” method from 10% to 90% and vice versa.

We recorded Fall Time + Rise Time = 32 ms.


Health impact – PWM / Blue Light

PWM (Screen flickering)

Pulse-width modulation (PWM) is an easy way to control monitor brightness. When you lower the brightness, the light intensity of the backlight is not lowered, but instead turned off and on by the electronics with a frequency indistinguishable to the human eye. In these light impulses, the light/no-light time ratio varies, while brightness remains unchanged, which is harmful to your eyes. You can read more about that in our dedicated article on PWM.

Lenovo Yoga C740 (14)’s display doesn’t use PWM to adjust its brightness levels, which makes it comfortable for long periods of use.


Blue light emissions

Installing our Health-Guard profile not only eliminates PWM but also reduces the harmful Blue Light emissions while keeping the colors of the screen perceptually accurate. If you’re not familiar with the Blue light, the TL;DR version is – emissions that negatively affect your eyes, skin and your whole body. You can find more information about that in our dedicated article on Blue Light.

Conclusion

Lenovo Yoga C740 (14) has a Full HD touchscreen IPS panel with a good contrast ratio, comfortable viewing angles and 91% sRGB coverage. Moreover, its backlight doesn’t flicker.

Buy our profiles

Since our profiles are tailored for each individual display model, this article and its respective profile package are meant for Lenovo Yoga C740 (14) configurations with 14″ BOE NV156FHM-N65 (BOE0855) (FHD, 1920 × 1080) IPS panel.

*Should you have problems with downloading the purchased file, try using a different browser to open the link you’ll receive via e-mail. If the download target is a .php file instead of an archive, change the file extension to .zip or contact us at [email protected]

Read more about the profiles HERE.

In addition to receiving efficient and health-friendly profiles, by buying LaptopMedia's products you also support the development of our labs, where we test devices in order to produce the most objective reviews possible.

Office Work

Office Work should be used mostly by users who spend most of the time looking at pieces of text, tables or just surfing. This profile aims to deliver better distinctness and clarity by keeping a flat gamma curve (2.20), native color temperature and perceptually accurate colors.

Design and Gaming

This profile is aimed at designers who work with colors professionally, and for games and movies as well. Design and Gaming takes display panels to their limits, making them as accurate as possible in the sRGB IEC61966-2-1 standard for Web and HDTV, at white point D65.

Health-Guard

Health-Guard eliminates the harmful Pulse-Width Modulation (PWM) and reduces the negative Blue Light which affects our eyes and body. Since it’s custom tailored for every panel, it manages to keep the colors perceptually accurate. Health-Guard simulates paper so the pressure on the eyes is greatly reduced.

Get all 3 profiles with 33% discount


Sound

Thanks to the Dolby Atmos technology, the speakers of Lenovo Yoga C740 (14) produce loud and clear sound, that is free of deviations throughout the entire frequency range.


Drivers

Lenovo Ideapad C740 (14″)’s drivers and utilities are available to download here: https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/yoga-series/yoga-c740-14iml/downloads/automatic-driver-update

Battery

Now, we conduct the battery tests with Windows Better performance setting turned on, screen brightness adjusted to 120 nits and all other programs turned off except for the one we are testing the notebook with. Lenovo has put a 51Wh battery pack inside of this machine.

While Lenovo is stating this laptop would be able to reach 13 hours of battery life. However, surprisingly, we were able to get even more out of it – more than 15 hours of Web browsing and 14 hours and a half of video playback.

In order to simulate real-life conditions, we used our own script for automatic web browsing through over 70 websites.

Acer Spin 5 (SP513-52) 53.9 Wh, 4670 mAh, 6-cell

We use F1 2017’s built-in benchmark on loop in order to simulate real-life gaming.

Acer Spin 5 (SP513-52) 53.9 Wh, 4670 mAh, 6-cell
HP ENVY x360 13 (13-ag) 53.2Wh, 4-cell

CPU options

Lenovo Yoga C740 features the latest 10th Gen. processors from Intel. You can buy the laptop with the Core i5-10210U or the Core i7-10510U, which are four-core/eigh-thread CPUs, and there is the Core i7-10710U, which has six-cores and twelve-threads.


GPU options

All of the aforementioned processors come with the updated Intel UHD Graphics, which this time doesn’t feature a number, whatsoever.


Gaming tests

cs-go-benchmarks

CS:GO HD 1080p, Low (Check settings) HD 1080p, Medium (Check settings) HD 1080p, MAX (Check settings)
Average FPS 54 fps 28 fps – fps

DOTA 2 HD 1080p, Low (Check settings) HD 1080p, Normal (Check settings) HD 1080p, High (Check settings)
Average FPS 77 fps 36 fps 18 fps

GTA-V-benchmarks

Grand Theft Auto V (GTA 5) HD 768p, Normal (Check settings) HD 768p, High (Check settings) HD 768p, Very High (Check settings)
Average FPS 30 fps – fps – fps

Temperatures and comfort

Max CPU load

In this test we use 100% on the CPU cores, monitoring their frequencies and chip temperature. The first column shows a computer’s reaction to a short load (2-10 seconds), the second column simulates a serious task (between 15 and 30 seconds), and the third column is a good indicator of how good the laptop is for long loads such as video rendering.

Average core frequency (base frequency + X); CPU temp.

Intel Core i5-10210U (15W TDP) 0:02 – 0:10 sec 0:15 – 0:30 sec 10:00 – 15:00 min
Lenovo Yoga C740 (14) 3.09 GHz (B+93%) @ 96°C 2.66 GHz (B+66%) @ 97°C 1.96 GHz (B+23%) @ 71°C

One of the biggest challenges in a thermal standpoint for this laptop is the amount of airflow feeding to its cooling. As the laptop is super thin and its feet are similar to the ones on a hobbit, you can expect, that it has vacuumed itself to the desk, when you stress test it. This is one of the main reasons for the high temperatures at the beginning of the torture and the sub 2.00 GHz frequencies at its end.

Comfort during full load


Verdict

First, let’s start by noting that our artistic talents (or the lack of them) prevented us from showing our most creative users deep information about this product. However, we were able to get a thing or two for them. One of the major positives of this laptop’s Pen usage is its accuracy. We found it to be more accurate than the Yoga 730 for example. The Yoga C740 (14) also has better palm rejection, while the biggest issue we had was when the screen was handled with oily hands. After that, the stylus seems to slide or skip a pixel, mainly because of the unevenness of the surface. So make sure you clean it well with screen spray and a cloth towel before you go on your drawing endeavors.

Then there is the exceptional battery life, that surpasses even Lenovo’s claims. The Yoga C740 (14) managed to go through 15 hours of Web browsing solely on battery power. At the same time, if you are onto a movie marathon, the laptop is going to last around 14 hours and a half.

This laptop’s panel (BOE NV156FHM-N65 (BOE0855)) has a decent contrast ratio, comfortable viewing angles and thankfully – doesn’t flicker at any brightness level. Furthermore, it covers 91% of sRGB and with the help of our Gaming and Web design profile, its colors become accurate enough for Web design purposes.

Apart from the display, the other two input devices are pretty comfortable in the long run. While the keyboard has a pretty short key travel, and you will definitely need some time getting used to that “Enter” key and the proximity of the slash sign, its feedback is decent and the keycaps are pretty sizeable. Moreover, it has a backlight, while the touchpad has a matte glass cover for better gliding.

Additionally, there are two pretty well sounding speakers, surrounding the keyboard. While they produce loud and dynamic audio, there is a noticeable lack of punch.

Sadly, you won’t be able to upgrade the RAM on this one, as there are no RAM DIMMs available anywhere on the motherboard. On the bright side, you can upgrade the storage via the solo M.2 port, which fits PCIe x4 NVMe drives as well. We can add to that the lack of Thunderbolt connectivity, and the overall limited I/O selection.

Lastly, we have to mention the Core i5-10210U processor, this laptop was equipped with. Once more, Intel didn’t disappoint in terms of efficiency, however, we didn’t see any major improvement over the Core i5-8265U. Or at least with this laptop.

Pros

  • Good all-metal build
  • Great battery life
  • A Pen included inside the box
  • Responsive touchscreen with little to no lag
  • Supports PCIe x4 SSDs
  • Covers 91% of sRGB and when our Gaming and Web design profile is present, its color accuracy is suitable for Web designers (BOE NV156FHM-N65 (BOE0855))
  • Doesn’t use PWM to adjust its brightness (BOE NV156FHM-N65 (BOE0855))


Cons

  • Modest I/O selection
  • No RAM upgrade is possible
  • Lacks Thunderbolt connection
  • Lacks an SD card reader

You can check the prices and configurations in our Specs System: https://laptopmedia.com/series/lenovo-yoga-c740-14/

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robi
robi
2 years ago

No more speaker test on your reviews ?

7Five
7Five
2 years ago
Reply to  Alex Iliev

do 8 or 16Gb of memory work in single or dual channel mode?

sheeshee
sheeshee
2 years ago

That’s crazy the pen was included, it cost almost 100 euros/usd. So i wonder: was it presented like “officially” in the laptop’s box? or just included un the delivery box?

sheeshee
sheeshee
2 years ago
Reply to  Alex Iliev

Hi, i made some research on Lenovo PSREF’ site and i found that every model will be shipped with the Active Pen except those : 81TC000CMX, 81TC000DMX, 81TC000EMX, 81TC000JUS, 81TC000NUS, 81TC000PUS, 81TC000QUS, 81TC003LUS.
We can already say that USA won’t have any stylus at all. The others models are Nordics (Danemark, Finland, Sweden and Norwegia) but that doesnt mean all models in Nordic’s courntry won’t have the pen, because some of them will have it (81TC000FMX, 81TC000GMX, 81TC000HMX).

Tomasz
Tomasz
2 years ago

Are you going to review Yoga S740 (both 14 and 15-inch) and Yoga C740 15-inch?

Simeon Nikolov
Admin
2 years ago
Reply to  Tomasz

Lenovo Yoga S740 (14″) is coming in several days 🙂

Julian
Julian
2 years ago
Reply to  Tomasz

With mx 250 ?

Jim
Jim
2 years ago

Are you sure both the USB c ports enable power delivery? The Lenovo website seems to suggest otherwise

Jan
Jan
2 years ago

Hey,
how is the pen input of this laptop? Does it keep up with the Surface Pro?
I have to devide between the Yoga and the Surface Pro as a device for university were i will write a lot with the pen.

Greetings
Jan

George
George
2 years ago
Reply to  Jan

Hi Jan,
I have been using OneNote on the Yoga to take notes for the past week and i can say im pleased with the experience. It took me a few hours to get used to it and most of my friends that waned to try it push the pen too hard into the screen at first.
The reason i chose this over the Surface pro was the screen. I wouldn’t be able to comfortably use two apps at the same time on that small screen but that can be pretty subjective.

Hope you’ll enjoy your new laptop,
George

Phil Lee
Phil Lee
2 years ago

You neglected to note that there is no SD card slot (either flavor). I put all my personal stuff – mostly pictures – on one to reduce the disk usage as well as make it easy to move. And accessing pictures doesn’t need to be high speed anyway. Otherwise I really like this one.

David
David
2 years ago

does this C740 have a storage slot for the pen?

Miki
Miki
2 years ago

Are You sure it’s impossible to expand RAM ? I wanted to but this model and on the reseller site they assure it’s possible to make it 16 GB

Jochen
Jochen
2 years ago
Reply to  Miki

well you can buy a version which has 16GB of RAM soldered on. so yes, you can get more than the 8GB they had in the test, but you cant change the RAM on an existing latpop.

Bonny
Bonny
2 years ago

Will there be any update regarding Yoga C740 (15″)? Apparently the 15-inch version has a Vesa HDR-certified screen, so it’s more interesting than 14-inch version.

Šimon
Šimon
2 years ago

Hi,
are you going to review Lenovo Ideapad S540 13-inch? I think it looks very interesting.

Simeon Nikolov
Admin
2 years ago
Reply to  Šimon

We’ve already ordered it! However, deliveries from stores around Christmas take some time so I guess that we’ll have it in a week and we’ll need ~10 days more for testing 🙂

Šimon
Šimon
2 years ago
Reply to  Simeon Nikolov

Thanks for your quick answer. I am looking forward for that review, because i have troubles deciding between c740, s740 and s540-13. 🙂

Brett
Brett
2 years ago

Hi, can you tell me if the fan is noisy under load?

Andre Raimundo
Andre Raimundo
2 years ago
Reply to  Brett

Yes. This was also my question. Super important to know when dealing with this laptop–vacuum cleaner or breathing baby?

Šimon
Šimon
2 years ago
Reply to  Andre Raimundo

When temperature gets higher than 40c, it starts spinning until it is not 39 or less. And sometimes it has a troubles to get below 40 by itself. When i played some games, fan under the load was like helicopter. But it is completely quiet when it is not charging, just browsing some web, writing mails, even watching movies. I just quit the game, it took 5 minutes for my laptop to shut up completely. This laptop is not meant to be under the load all the time, but i think for the basic staff experience it is great machine.… Read more »

Šimon
Šimon
2 years ago

Can i ask you which media player did you use for a battery test? Because i cant watch two movies in vlc without pluging it in and netflix is even worse.

eric
eric
2 years ago

Hi thanks for the factual review . I am in Australia so our basic prices are much higher than in Europe the Uk and the USA . I have ordered the 15.6 inch version on special at Lenovo. It comes with a 500nit screen as standard 8gb of ram and a 512 GB M2. The speakers are in a different position and it has a numerical pad. Two C type ports and two USB ports . It also comes with wireless 802.11 ax so thats WIFI 6 . A stylus is included plus you can buy an upgrade to the… Read more »

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