Lenovo Yoga C740-15IML Laptop Review: Strong Battery Life, Weak Display

Name: Lenovo Yoga C740-15IML
Brand: Lenovo

Performance-degrading transformation. The dedicated graphics chip is gone without replacement, 4K UHD is no longer an option and there is no Thunderbolt 3 anymore, either: At first glance, the Lenovo Yoga C740-15IML appears to be a clear downgrade compared to its predecessor. While this holds true for some aspects of the convertible, other areas have seen some improvements. Unfortunately, our test model suffers from a very dimly lit display. Read our in-depth review to find out what else Lenovo does or does not do well.

Benjamin Herzig, 👁 Andreas Osthoff, ✓ Andrea Grüblinger (translated by Marius S.), Published 01/07/2020 🇩🇪 🇫🇷 ...

Laptop Touchscreen Windows Convertible / 2-in-1 Comet Lake

Lenovo has been steadily expanding its Yoga-laptop and Yoga-tablet portfolio over the past years and introduced a new naming scheme to differentiate between the models. While all Lenovo Yoga laptops were convertibles in the past, this only holds true for models of the Lenovo Yoga C series now. Thus, today's test device, the Lenovo Yoga C740-15IML, is a laptop-tablet hybrid. The name also identifies it as an upper mid-range (700 series) device with a 15.6-inch display.

The Lenovo Yoga C740-15IML integrates the latest Comet Lake processors. Our model includes an i7 processor that is accompanied by 16 GB of RAM and a 512-GB SSD. A Full HD (1920x1080) LCD serves as the device's screen. This configuration (81TD003YGE) can be purchased for about 1,050 Euros (~$1,167).

The predecessor of the Lenovo Yoga C740-15IML is the Lenovo Yoga 730-15IKB. The Lenovo Yoga C940-15IRH is a more expensive alternative to the Yoga C740. Furthermore, we will also draw comparisons between the C740-15IML and the Dell Inspiron 15 5579, Asus ZenBook Flip 15 and the HP Envy x360 15.

Test device courtesy of campuspoint.de

Download your licensed rating image as PNG / SVG

81TD001LGE

Processor

Intel Core i7-10510U 4 x 1.8 - 4.9 GHz, Comet Lake-U

Graphics adapter

Intel UHD Graphics 620

Memory

16 GB

, DDR4-2666, onboard

Display

15.60 inch 16:9, 1920 x 1080 pixel 141 PPI, 10-point, native pen support, B156HAN02.5, IPS LED, glossy: no, HDR

Mainboard

Intel Comet Lake-U PCH-LP Premium

Storage

Samsung SSD PM981 MZVLB512HAJQ, 512 GB

, M.2 2280 PCIe NVMe, 435 GB free

Soundcard

Intel Comet Lake PCH-LP - cAVS

Connections

4 USB 3.0 / 3.1 Gen1, 2 DisplayPort, Audio Connections: audio combo, 1 Fingerprint Reader, Sensors: Accelerometer

Networking

Intel Wi-Fi 6 AX201 (a/b/g/h/n = Wi-Fi 4/ac = Wi-Fi 5/ax = Wi-Fi 6/), Bluetooth 5.1

Size

height x width x depth (in mm): 17.25 x 357.8 x 235.35 ( = 0.68 x 14.09 x 9.27 in)

Battery

60.3 Wh Lithium-Ion

Operating System

Microsoft Windows 10 Home 64 Bit

Camera

Webcam: 720p with privacy slider

Additional features

Speakers: 2-watt stereo, Keyboard: 6 rows chiclet with numpad, Keyboard Light: yes, Lenovo Active Pen 2, Lenovo USB type-C 3-in-1 hub, Lenovo Vantage, Lenovo Utility, Lenovo stylus configuration, Microsoft Office Trial, 24 Months Warranty

Weight

1.862 kg ( = 65.68 oz / 4.11 pounds), Power Supply: 355 g ( = 12.52 oz / 0.78 pounds)

Price

1149 Euro

Links

Lenovo homepage
Lenovo notebook section

Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

see all specifications

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Rating	Date	Model	Weight	Height	Size	Resolution
84.8 %	01/2020	Lenovo Yoga C740-15IML i7-10510U, UHD Graphics 620	1.9 kg	17.25 mm	15.60"	1920x1080
82.7 %	07/2018	Lenovo Yoga 730-15IKB i5-8550U, GeForce GTX 1050 Mobile	1.9 kg	17.2 mm	15.60"	3840x2160
86 %	12/2019	Lenovo Yoga C940-15IRH i7-9750H, GeForce GTX 1650 Max-Q	2 kg	19.7 mm	15.60"	1920x1080
81.2 %	06/2018	Dell Inspiron 15 5579-9672 i5-8250U, UHD Graphics 620	2.1 kg	20.2 mm	15.60"	1920x1080
82.1 %	04/2018	Asus ZenBook Flip 15 UX561UD i5-8550U, GeForce GTX 1050 Mobile	2.1 kg	21 mm	15.60"	3840x2160
80.1 %	03/2018	HP Envy x360 15-bq102ng R5 2500U, Vega 8	2.1 kg	19.6 mm	15.60"	1920x1080

Case: Yoga Tablet with Aluminum Chassis

Lenovo has completely redesigned the chassis. In spite of this, the resemblance to its predecessor Lenovo Yoga 730-15IKB is indisputable. The visual design changes include the vertical Lenovo logo on the palm rests and the numpad, which has been moved to the right of the main QWERTY keys. As a result, the touchpad has been moved to the left. This time around, the chromed border around the touchpad has been omitted, which makes the design look cleaner overall.

As with the predecessor, the entire chassis is made of dark-gray aluminum. The construction has a premium feel, a high rigidity and the build quality is immaculate. The display and the base unit only allow for very minor twisting and the palm rests do not yield under pressure.

For a convertible, the quality of the hinges is of the utmost importance. Thankfully, Lenovo has done a good job in this regard. The two 360-degree hinges prevent teetering almost entirely. That being said, the lid cannot be opened one-handed, which is a bit of a shame.

Compared to the Lenovo Yoga 730-15IKB, nothing has changed in terms of the weight. However, the length of the Yoga C740-15IML is slightly shorter than that of its predecessor. Compared to the more expensive Lenovo Yoga C940-15IRH, the Yoga C740-15IML is lighter and thinner by about 2 millimeters.

Size Comparison

Dell Inspiron 15 5579-9672 Asus ZenBook Flip 15 UX561UD HP Envy x360 15-bq102ng Lenovo Yoga 730-15IKB Lenovo Yoga C740-15IML Lenovo Yoga C940-15IRH DIN A4 ❌

Connectivity: No More Thunderbolt for the Lenovo Yoga C740-15IML

The HDMI port is no more and the proprietary slim-tip charging connector is gone as well. Instead, there is an additional USB Type-C port, which supports DisplayPort and Power Delivery. Interestingly, Lenovo has cut the Thunderbolt 3 functionality from the second available USB Type-C port. It looks as though Lenovo is trying to push buyers who need this feature towards the more expensive Lenovo Yoga C940-15IRH.

Left: 2x USB 3.1 Gen 1 Type-C, audio combo

Communication

Intel's Wi-Fi card AX201 is relied upon for internet access. The latest-generation 2x2 Wi-Fi module supports the new Wi-Fi 6 standard, which results in far higher transfer rates in our benchmarks. Relative to the other devices in our comparison, the Wi-Fi speeds are more than twice as fast. We did not experience any issues with the wireless AX201 module during daily use.

Networking
iperf3 transmit AX12
Lenovo Yoga C740-15IML Intel Wi-Fi 6 AX201	1380 MBit/s
Average of class Convertible (138 - 1455, n=10, last 2 years)	886 MBit/s -36%
HP Envy x360 15-bq102ng Realtek RTL8822BE Wireless LAN 802.11ac PCIe Adapter	676 MBit/s -51%
Asus ZenBook Flip 15 UX561UD Intel Dual Band Wireless-AC 8265	666 MBit/s -52%
Dell Inspiron 15 5579-9672 Qualcomm Atheros QCA61x4	657 MBit/s -52%
Lenovo Yoga 730-15IKB Realtek RTL8822BE Wireless LAN 802.11ac PCIe Adapter	650 MBit/s -53%
iperf3 receive AX12
Lenovo Yoga C740-15IML Intel Wi-Fi 6 AX201	1420 MBit/s
Average of class Convertible (263 - 1579, n=10, last 2 years)	973 MBit/s -31%
HP Envy x360 15-bq102ng Realtek RTL8822BE Wireless LAN 802.11ac PCIe Adapter	632 MBit/s -55%
Lenovo Yoga 730-15IKB Realtek RTL8822BE Wireless LAN 802.11ac PCIe Adapter	616 MBit/s -57%
Dell Inspiron 15 5579-9672 Qualcomm Atheros QCA61x4	612 MBit/s -57%
Asus ZenBook Flip 15 UX561UD Intel Dual Band Wireless-AC 8265	461 MBit/s -68%

Accessories

The 65-watt AC adapter has a USB Type-C port - a new addition compared to the preceding model, which came with a proprietary 90-watt AC adapter. The smaller AC adapter is about 100 grams lighter. Aside from the AC adapter, the Lenovo Yoga C740-15IML includes a stylus (which we will take a closer look at in the input devices section) and a 3-in-1 adapter. The hub is connected via USB Type-C and features VGA, HDMI and a USB Type-A port.

Maintenance

Nine Torx screws have to be loosened and numerous clips removed with a spudger tool before the bottom plate can be taken off. The clip in the center of the case is particularly hard to remove.

On the inside, users can upgrade the M.2-2280 SSD and swap the non-soldered Wi-Fi module. By contrast, the RAM is soldered onto the motherboard. Furthermore, the two fans can be cleaned and the battery is also user-replaceable.

Warranty

In the case of damage, users can file a warranty claim with the manufacturer for two years after purchase. Since the warranty package only includes a bring-in service, users will have to send in the Lenovo Yoga C740-15IML for repairs.

Input devices: Digitizer Pen Included

Keyboard

The large spaces to the right and left of the keyboards are now gone in favor of a numpad. As a result, the keyboard is no longer centered in the middle of the case. The choice between a keyboard with or without numpad is a matter of personal preference.

In terms of quality, the keyboard does not come close to the keyboards of Lenovo's ThinkPads. Here, the keys feel too soft and the actuation point is not as clearly defined. Consequentially, the keyboard is not exceptional, but to a certain extent it is still acceptable for typists. At least, the backlit keys offer decent key travel.

Keyboard area of the Lenovo Yoga C740-15IML

Touchpad

The touchpad dimensions are 10.5 x 7 centimeters. The glass surface gives it a premium feel and good gliding properties. The software solution of the ClickPad also leaves no room for complaints. It is an almost perfect mouse replacement that should satisfy even demanding users.

Touchscreen & Stylus

Since this is a convertible laptop, it of course has a touchscreen that works without any issues. The display is compatible with Wacom AES as well. The included Lenovo digitizer stylus is easy to handle. Thanks to its support for multiple different pressure levels, it allows for creating precise drawings and notes. The pen, which cannot be stored inside of the case, contains an AAA battery. The included USB mount can be used to attach the stylus to the laptop.

Display: The Biggest Weakness of the Lenovo Laptop

All models of the Lenovo Yoga C740-15IML are equipped with a glossy 15.6-inch Full HD (1920x1080) touchscreen. However, Lenovo has two different IPS LCD variants on offer: One Full HD display offers a maximum brightness level of 250 cd/m². At 500 cd/m², the other display option is twice as bright.

Unfortunately, the former is installed in our test device. For a laptop with a price in excess of $1,000, the average brightness of 268 cd/m² is very low. At this point we are uncertain as to why this dimly lit display is even an option.

Almost no backlight bleeding (enhanced in this picture)


283 cd/m²	280 cd/m²	278 cd/m²
267 cd/m²	286 cd/m²	251 cd/m²
258 cd/m²	276 cd/m²	237 cd/m²

Distribution of brightness

B156HAN02.5 tested with X-Rite i1Pro 2

Maximum: 286 cd/m² (Nits) Average: 268.4 cd/m² Minimum: 2.8 cd/m²
Brightness Distribution: 83 %
Center on Battery: 287 cd/m²
Contrast: 1430:1 (Black: 0.2 cd/m²)
ΔE Color 7.3 | 0.5-29.43 Ø5.1, calibrated: 5.1
ΔE Greyscale 7 | 0.57-98 Ø5.3
57.5% sRGB (Argyll 1.6.3 3D)
36.9% AdobeRGB 1998 (Argyll 1.6.3 3D)
40.33% AdobeRGB 1998 (Argyll 2.2.0 3D)
57.9% sRGB (Argyll 2.2.0 3D)
39.04% Display P3 (Argyll 2.2.0 3D)
Gamma: 2.35

Download ICC File (X-Rite i1Pro 2)

	Lenovo Yoga C740-15IML B156HAN02.5, IPS LED, 1920x1080, 15.60	Lenovo Yoga 730-15IKB BOE HF NV156QUM-N51, IPS, 3840x2160, 15.60	Dell Inspiron 15 5579-9672 AUO, B156HW01, IPS, 1920x1080, 15.60	Asus ZenBook Flip 15 UX561UD B156ZAN03.1, IPS, 3840x2160, 15.60	HP Envy x360 15-bq102ng Chi Mei CM15E9, IPS, 1920x1080, 15.60
Display		65%	-5%	114%	6%
Display P3 Coverage	39.04	68.7 76%	37 -5%	86.6 122%	41.36 6%
sRGB Coverage	57.9	90 55%	55.6 -4%	100 73%	62.2 7%
AdobeRGB 1998 Coverage	40.33	65.8 63%	38.23 -5%	99.5 147%	42.74 6%
Response Times		28%	15%	4%	21%
Response Time Grey 50% / Grey 80% *	50.8 ?(24, 26.8)	34 ?(16, 18) 33%	41 ?(19, 22) 19%	52 ?(25, 27) -2%	40 ?(22, 18) 21%
Response Time Black / White *	32.4 ?(17.6, 14.8)	25 ?(14, 11) 23%	29 ?(17, 12) 10%	29 ?(15, 14) 10%	26 ?(14, 12) 20%
PWM Frequency		961 ?(90)			25000 ?(30)
Screen		16%	9%	40%	24%
Brightness middle	286	309 8%	251 -12%	380 33%	221 -23%
Brightness	268	299 12%	240 -10%	371 38%	207 -23%
Brightness Distribution	83	84 1%	84 1%	87 5%	87 5%
Black Level *	0.2	0.29 -45%	0.2 -0%	0.28 -40%	0.15 25%
Contrast	1430	1066 -25%	1255 -12%	1357 -5%	1473 3%
Colorchecker dE 2000 *	7.3	3.9 47%	5.25 28%	4.38 40%	4.35 40%
Colorchecker dE 2000 max. *	21.7	7.5 65%	10.04 54%	7.59 65%	8.98 59%
Colorchecker dE 2000 calibrated *	5.1
Greyscale dE 2000 *	7	4.58 35%	3.28 53%	3.6 49%	3.09 56%
Gamma	2.35 ^94%	2.43 ^91%	2.15 ^102%	2.32 ^95%	2.23 ^99%
CCT	5847 ^111%	7344 ^89%	6502 ^100%	6860 ^95%	6068 ^107%
Color Space (Percent of AdobeRGB 1998)	36.9	39 6%	35 -5%	88 138%	56 52%
Color Space (Percent of sRGB)	57.5	90 57%	55 -4%	100 74%	86 50%
Total Average (Program / Settings)		36% / 27%	6% / 7%	53% / 50%	17% / 20%

* ... smaller is better

There is a slight yellow tint ex-factory. While this can be remedied with calibration (performed in this case with the professional CalMAN software and the X-Rite i1 Pro 2 spectrophotometer), there are some deviations in terms of saturation even after our calibration. Positive: The contrast ratio of the screen is excellent, resulting in vivid colors.

The color-space coverage is extremely poor and even the small sRGB color space is only covered by 57.5%. The display is not suitable for image-editing.

Although the display appears to have been fitted with an anti-reflection layer, the surface is still glossy. The brightness level is insufficient for outdoor use, which manifests in poor readability even in the shade.

Display Response Times

ℹ

Display response times show how fast the screen is able to change from one color to the next. Slow response times can lead to afterimages and can cause moving objects to appear blurry (ghosting). Gamers of fast-paced 3D titles should pay special attention to fast response times.

↔ Response Time Black to White
32.4 ms ... rise ↗ and fall ↘ combined	↗ 17.6 ms rise
32.4 ms ... rise ↗ and fall ↘ combined	↘ 14.8 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers. In comparison, all tested devices range from 0.1 (minimum) to 240 (maximum) ms. » 86 % of all devices are better. This means that the measured response time is worse than the average of all tested devices (21.8 ms).
↔ Response Time 50% Grey to 80% Grey
50.8 ms ... rise ↗ and fall ↘ combined	↗ 24 ms rise
50.8 ms ... rise ↗ and fall ↘ combined	↘ 26.8 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers. In comparison, all tested devices range from 0.2 (minimum) to 636 (maximum) ms. » 85 % of all devices are better. This means that the measured response time is worse than the average of all tested devices (34.3 ms).

Screen Flickering / PWM (Pulse-Width Modulation)

ℹ

To dim the screen, some notebooks will simply cycle the backlight on and off in rapid succession - a method called Pulse Width Modulation (PWM) . This cycling frequency should ideally be undetectable to the human eye. If said frequency is too low, users with sensitive eyes may experience strain or headaches or even notice the flickering altogether.

Screen flickering / PWM not detected

In comparison: 53 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 18683 (minimum: 5 - maximum: 3846000) Hz was measured.

As per usual, the IPS viewing angles leave no room for complaints.

Performance: Yoga Laptop C740-15IML is Slower than the Older Model

Lenovo offers three different Intel Core CPU options: The quad-core CPUs i5-10210U and i7-10510U and the hexa-core processor i7-10710U. All three options come with the same Intel UHD Graphics 620 and Lenovo does not offer any other GPU options. In terms of RAM, users can choose between 8, 12 and 16 GB of soldered DDR4-2666 memory. The storage solution consists of an M.2-2280 SSD with a capacity of up to 1 TB.

Note: Lenovo's "intelligent cooling" is enabled by default. The following benchmarks were performed with "intelligent cooling" disabled and the Windows power profile "high performance" selected.

Processor

The Core i7-10510U is a new Ultra Low Voltage (ULV) processor from Intel. In this case, ULV refers to the processor's typical TDP of 15 watts. The four cores of this processor have clock rates ranging from 1.8 to 4.8 GHz. In our CPU comparison list, the CPU's performance can be compared to those of competing processors.

The processor is able to exceed its TDP limit by a fair amount, at which point it can consume up to 43 watts, which translates into a clock speed of 4.1 GHz. Over the course of our Cinebench test, the consumption drops to 23 watts and the clock speed to 3 GHz. During the Cinebench loop, the consumption drops to about 16.5 watts and the clock rate to around 2.6 GHz after a few loops. Here, the temperatures stabilize at approximately 75 °C with an initial peak of 97 °C.

Although the Lenovo Yoga C740-15IML is faster than its competitors (which, to be fair, were all released last year) in terms of CPU performance, its own predecessor, the Lenovo Yoga 730-15IKB, appears to benefit from a more potent cooling solution that results in higher CPU performance under continuous load. In this regard, the latest model is a clear downgrade. If more CPU performance is desired, the Yoga C940-15IRH is likely a better choice.

The performance is not limited in battery mode.

Lenovo Yoga C740-15IML Intel Core i7-10510U, Intel Core i7-10510U: Ø604 (560-752)

Lenovo Yoga 730-15IKB Intel Core i7-8550U, Intel Core i7-8550U: Ø672 (652.93-722.79)

Dell Inspiron 15 5579-9672 Intel Core i5-8250U, Intel Core i5-8250U: Ø503 (479.16-561.5)

Asus ZenBook Flip 15 UX561UD Intel Core i7-8550U, Intel Core i7-8550U: Ø581 (569.97-761.01)

HP Envy x360 15-bq102ng AMD Ryzen 5 2500U, AMD Ryzen 5 2500U: Ø561 (552.26-618.11)

Cinebench R15
CPU Single 64Bit
Average of class Convertible (68.6 - 287, n=69, last 2 years)	218 Points +12%
Lenovo Yoga C740-15IML Intel Core i7-10510U	195 Points
Lenovo Yoga C940-15IRH Intel Core i7-9750H	184 Points -6%
Average Intel Core i7-10510U (113 - 202, n=42)	178.4 Points -9%
Asus ZenBook Flip 15 UX561UD Intel Core i7-8550U	171 Points -12%
Lenovo Yoga 730-15IKB Intel Core i7-8550U	168 Points -14%
HP Envy x360 15-bq102ng AMD Ryzen 5 2500U	142 Points -27%
Dell Inspiron 15 5579-9672 Intel Core i5-8250U	140 Points -28%
CPU Multi 64Bit
Average of class Convertible (110.1 - 2633, n=72, last 2 years)	1345 Points +78%
Lenovo Yoga C940-15IRH Intel Core i7-9750H	1231 Points +63%
Asus ZenBook Flip 15 UX561UD Intel Core i7-8550U	761 Points +1%
Lenovo Yoga C740-15IML Intel Core i7-10510U	756 (560^min - 756^max) Points
Lenovo Yoga 730-15IKB Intel Core i7-8550U	723 Points -4%
Average Intel Core i7-10510U (482 - 856, n=45)	666 Points -12%
HP Envy x360 15-bq102ng AMD Ryzen 5 2500U	618 Points -18%
Dell Inspiron 15 5579-9672 Intel Core i5-8250U	562 Points -26%

Cinebench R15 CPU Multi 64Bit

756 Points

Cinebench R15 OpenGL 64Bit

61 fps

Cinebench R15 Ref. Match 64Bit

98 %

Cinebench R15 CPU Single 64Bit

195 Points

Help

... in comparison

System Performance

The Lenovo Yoga C740-15IML claims a large lead in almost all of the PCMark tests and there are no weaknesses in terms of system performance otherwise, either.

PCMark 10 | PCMark 8

PCMark 10
Score
Average of class Convertible (1486 - 7676, n=60, last 2 years)	5370 Points +16%
Lenovo Yoga C740-15IML UHD Graphics 620, i7-10510U, Samsung SSD PM981 MZVLB512HAJQ	4630 Points
Lenovo Yoga 730-15IKB GeForce GTX 1050 Mobile, i5-8550U, SK Hynix PC401 512GB M.2 (HFS512GD9TNG)	4347 Points -6%
Average Intel Core i7-10510U, Intel UHD Graphics 620 (3783 - 4688, n=16)	4299 Points -7%
Asus ZenBook Flip 15 UX561UD GeForce GTX 1050 Mobile, i5-8550U, Micron 1100 MTFDDAV256TBN	4249 Points -8%
HP Envy x360 15-bq102ng Vega 8, R5 2500U, Samsung PM961 MZVLW256HEHP	2944 Points -36%
Dell Inspiron 15 5579-9672 UHD Graphics 620, i5-8250U, SK hynix SC311 SATA	2208 Points -52%
Essentials
Lenovo Yoga C740-15IML UHD Graphics 620, i7-10510U, Samsung SSD PM981 MZVLB512HAJQ	10546 Points
Average of class Convertible (3975 - 12059, n=60, last 2 years)	10332 Points -2%
Average Intel Core i7-10510U, Intel UHD Graphics 620 (8020 - 10546, n=16)	9266 Points -12%
Asus ZenBook Flip 15 UX561UD GeForce GTX 1050 Mobile, i5-8550U, Micron 1100 MTFDDAV256TBN	8388 Points -20%
Lenovo Yoga 730-15IKB GeForce GTX 1050 Mobile, i5-8550U, SK Hynix PC401 512GB M.2 (HFS512GD9TNG)	8258 Points -22%
Dell Inspiron 15 5579-9672 UHD Graphics 620, i5-8250U, SK hynix SC311 SATA	6349 Points -40%
HP Envy x360 15-bq102ng Vega 8, R5 2500U, Samsung PM961 MZVLW256HEHP	6236 Points -41%
Productivity
Lenovo Yoga C740-15IML UHD Graphics 620, i7-10510U, Samsung SSD PM981 MZVLB512HAJQ	7254 Points
Average Intel Core i7-10510U, Intel UHD Graphics 620 (6554 - 8036, n=16)	7243 Points 0%
Average of class Convertible (2764 - 9778, n=60, last 2 years)	7118 Points -2%
Lenovo Yoga 730-15IKB GeForce GTX 1050 Mobile, i5-8550U, SK Hynix PC401 512GB M.2 (HFS512GD9TNG)	6678 Points -8%
Asus ZenBook Flip 15 UX561UD GeForce GTX 1050 Mobile, i5-8550U, Micron 1100 MTFDDAV256TBN	6024 Points -17%
Dell Inspiron 15 5579-9672 UHD Graphics 620, i5-8250U, SK hynix SC311 SATA	4811 Points -34%
HP Envy x360 15-bq102ng Vega 8, R5 2500U, Samsung PM961 MZVLW256HEHP	3901 Points -46%
Digital Content Creation
Average of class Convertible (811 - 11539, n=60, last 2 years)	5826 Points +65%
Asus ZenBook Flip 15 UX561UD GeForce GTX 1050 Mobile, i5-8550U, Micron 1100 MTFDDAV256TBN	4146 Points +18%
Lenovo Yoga 730-15IKB GeForce GTX 1050 Mobile, i5-8550U, SK Hynix PC401 512GB M.2 (HFS512GD9TNG)	4042 Points +15%
Lenovo Yoga C740-15IML UHD Graphics 620, i7-10510U, Samsung SSD PM981 MZVLB512HAJQ	3522 Points
Average Intel Core i7-10510U, Intel UHD Graphics 620 (2465 - 4741, n=16)	3239 Points -8%
HP Envy x360 15-bq102ng Vega 8, R5 2500U, Samsung PM961 MZVLW256HEHP	2848 Points -19%
Dell Inspiron 15 5579-9672 UHD Graphics 620, i5-8250U, SK hynix SC311 SATA	2656 Points -25%

PCMark 8
Home Score Accelerated v2
Average of class Convertible (4404 - 5830, n=3, last 2 years)	4890 Points +24%
Lenovo Yoga C740-15IML UHD Graphics 620, i7-10510U, Samsung SSD PM981 MZVLB512HAJQ	3935 Points
Average Intel Core i7-10510U, Intel UHD Graphics 620 (3157 - 4251, n=13)	3635 Points -8%
Asus ZenBook Flip 15 UX561UD GeForce GTX 1050 Mobile, i5-8550U, Micron 1100 MTFDDAV256TBN	3614 Points -8%
Lenovo Yoga 730-15IKB GeForce GTX 1050 Mobile, i5-8550U, SK Hynix PC401 512GB M.2 (HFS512GD9TNG)	3505 Points -11%
HP Envy x360 15-bq102ng Vega 8, R5 2500U, Samsung PM961 MZVLW256HEHP	3462 Points -12%
Dell Inspiron 15 5579-9672 UHD Graphics 620, i5-8250U, SK hynix SC311 SATA	3370 Points -14%
Work Score Accelerated v2
Lenovo Yoga C740-15IML UHD Graphics 620, i7-10510U, Samsung SSD PM981 MZVLB512HAJQ	5366 Points
Average Intel Core i7-10510U, Intel UHD Graphics 620 (3734 - 5366, n=13)	4987 Points -7%
Dell Inspiron 15 5579-9672 UHD Graphics 620, i5-8250U, SK hynix SC311 SATA	4556 Points -15%
Asus ZenBook Flip 15 UX561UD GeForce GTX 1050 Mobile, i5-8550U, Micron 1100 MTFDDAV256TBN	4401 Points -18%
Lenovo Yoga 730-15IKB GeForce GTX 1050 Mobile, i5-8550U, SK Hynix PC401 512GB M.2 (HFS512GD9TNG)	4382 Points -18%
Average of class Convertible (2921 - 6089, n=3, last 2 years)	4045 Points -25%
HP Envy x360 15-bq102ng Vega 8, R5 2500U, Samsung PM961 MZVLW256HEHP	3800 Points -29%

PCMark 8 Home Score Accelerated v2		3935 points
PCMark 8 Work Score Accelerated v2		5366 points
PCMark 10 Score		4630 points
Help

Storage Solution

The single M.2-2280 SSD has a capacity of 512 GB. In the case of our test model, it was manufactured by Samsung. The PM981 is a high-performance PCIe-NVMe SSD that pulls far ahead of all other SSDs in our comparison.

	Lenovo Yoga C740-15IML Samsung SSD PM981 MZVLB512HAJQ	Lenovo Yoga 730-15IKB SK Hynix PC401 512GB M.2 (HFS512GD9TNG)	Dell Inspiron 15 5579-9672 SK hynix SC311 SATA	Asus ZenBook Flip 15 UX561UD Micron 1100 MTFDDAV256TBN	HP Envy x360 15-bq102ng Samsung PM961 MZVLW256HEHP	Average Samsung SSD PM981 MZVLB512HAJQ
CrystalDiskMark 5.2 / 6		-10%	-70%	-61%	-29%	-16%
Write 4K	142.3	164.9 16%	48.25 -66%	112.6 -21%	116 -18%	126.7 ?(90.4 - 176.3, n=64) -11%
Read 4K	47.56	50.5 6%	23.77 -50%	29.67 -38%	42.73 -10%	44 ?(28 - 61.3, n=63) -7%
Write Seq	2185	1262 -42%	444.9 -80%	432.1 -80%	1222 -44%	1617 ?(112 - 2730, n=62) -26%
Read Seq	2235	2054 -8%	497.5 -78%	479.9 -79%	1608 -28%	1716 ?(501 - 2665, n=62) -23%
Write 4K Q32T1	515	477.6 -7%	223.5 -57%	191 -63%	280.1 -46%	413 ?(198.2 - 1707, n=64) -20%
Read 4K Q32T1	413.4	550 33%	171.8 -58%	246.5 -40%	333.6 -19%	420 ?(230 - 1015, n=64) 2%
Write Seq Q32T1	2981	1400 -53%	511 -83%	450.3 -85%	1291 -57%	2076 ?(1714 - 2994, n=64) -30%
Read Seq Q32T1	3565	2672 -25%	553 -84%	522 -85%	3183 -11%	3130 ?(1772 - 3565, n=64) -12%

CrystalDiskMark 3.0

CrystalDiskMark 5.2 / 6

AS SSD

DiskSpd

Samsung SSD PM981 MZVLB512HAJQ

Sequential Read: 2499 MB/s

Sequential Write: 2196 MB/s

512K Read: 1779 MB/s

512K Write: 1735 MB/s

4K Read: 65.2 MB/s

4K Write: 143.7 MB/s

4K QD32 Read: 401.1 MB/s

4K QD32 Write: 471.4 MB/s

GPU Performance

The Intel UHD Graphics 620 is the sole graphics chip of the Lenovo Yoga C740-15IML. Unlike its predecessor Lenovo Yoga 730-15IKB, the device does not include a dedicated GPU (dGPU).

Thus, the GPU performance of the Yoga C740-15IML is far behind that of the older model. While the integrated Intel GPU is able to fully exhaust its capabilities thanks to dual-channel RAM, its potential is still very limited.

3DMark 11 | 3DMark

3DMark 11 - 1280x720 Performance GPU
Asus ZenBook Flip 15 UX561UD NVIDIA GeForce GTX 1050 Mobile, Intel Core i7-8550U	7339 Points +267%
Lenovo Yoga 730-15IKB NVIDIA GeForce GTX 1050 Mobile, Intel Core i7-8550U	6935 Points +247%
Average of class Convertible (471 - 28708, n=68, last 2 years)	6269 Points +214%
HP Envy x360 15-bq102ng AMD Radeon RX Vega 8 (Ryzen 2000/3000), AMD Ryzen 5 2500U	3549 Points +78%
Lenovo Yoga C740-15IML Intel UHD Graphics 620, Intel Core i7-10510U	1999 Points
Average Intel UHD Graphics 620 (1144 - 3432, n=244)	1749 Points -13%
Dell Inspiron 15 5579-9672 Intel UHD Graphics 620, Intel Core i5-8250U	1529 Points -24%

3DMark
1280x720 Cloud Gate Standard Graphics
Average of class Convertible (2965 - 135871, n=58, last 2 years)	26972 Points +147%
Lenovo Yoga 730-15IKB NVIDIA GeForce GTX 1050 Mobile, Intel Core i7-8550U	26144 Points +139%
Asus ZenBook Flip 15 UX561UD NVIDIA GeForce GTX 1050 Mobile, Intel Core i7-8550U	16381 Points +50%
HP Envy x360 15-bq102ng AMD Radeon RX Vega 8 (Ryzen 2000/3000), AMD Ryzen 5 2500U	15186 Points +39%
Lenovo Yoga C740-15IML Intel UHD Graphics 620, Intel Core i7-10510U	10927 Points
Average Intel UHD Graphics 620 (6205 - 16400, n=225)	9262 Points -15%
Dell Inspiron 15 5579-9672 Intel UHD Graphics 620, Intel Core i5-8250U	8112 Points -26%
1920x1080 Fire Strike Graphics
Lenovo Yoga 730-15IKB NVIDIA GeForce GTX 1050 Mobile, Intel Core i7-8550U	5965 Points +336%
Asus ZenBook Flip 15 UX561UD NVIDIA GeForce GTX 1050 Mobile, Intel Core i7-8550U	5329 Points +289%
Average of class Convertible (365 - 21810, n=71, last 2 years)	4644 Points +239%
HP Envy x360 15-bq102ng AMD Radeon RX Vega 8 (Ryzen 2000/3000), AMD Ryzen 5 2500U	2310 Points +69%
Lenovo Yoga C740-15IML Intel UHD Graphics 620, Intel Core i7-10510U	1369 Points
Average Intel UHD Graphics 620 (557 - 2608, n=213)	1161 Points -15%
Dell Inspiron 15 5579-9672 Intel UHD Graphics 620, Intel Core i5-8250U	997 Points -27%
2560x1440 Time Spy Graphics
Average of class Convertible (94 - 8232, n=70, last 2 years)	1524 Points +252%
Lenovo Yoga 730-15IKB NVIDIA GeForce GTX 1050 Mobile, Intel Core i7-8550U	1416 Points +227%
HP Envy x360 15-bq102ng AMD Radeon RX Vega 8 (Ryzen 2000/3000), AMD Ryzen 5 2500U	649 Points +50%
Lenovo Yoga C740-15IML Intel UHD Graphics 620, Intel Core i7-10510U	433 Points
Average Intel UHD Graphics 620 (299 - 797, n=88)	389 Points -10%
Dell Inspiron 15 5579-9672 Intel UHD Graphics 620, Intel Core i5-8250U	317 Points -27%

3DMark 11 Performance		2275 points
3DMark Cloud Gate Standard Score		9909 points
3DMark Fire Strike Score		1249 points
3DMark Time Spy Score		497 points
Help

... in comparison

Gaming Performance

The lack of a dGPU makes the Lenovo Yoga C740-15IML a poor choice for games. Users who wish to play demanding games would be better served by a laptop with a dGPU.

	low	med.	high	ultra
BioShock Infinite (2013)	84.9	42.5	35.2	11.4
Dota 2 Reborn (2015)	90	56.5	23.2	20.5
Rise of the Tomb Raider (2016)	24.6	14.8
X-Plane 11.11 (2018)	27.7	17.8	15.7
Total War: Three Kingdoms (2019)	30.5	7.9

Emissions: Lenovo Yoga with Good Speakers & Low Heat/Noise Levels

System Noise

With a maximum 33.3 dB(A), the fans remain quieter than those of the older Lenovo Yoga 730-15IKB due to the lack of a dGPU. During idle, the fans remain inactive for the most part. At 29.6 dB(A), they are still very quiet when they do spin-up.

We did not observe coil whine on this laptop.

Noise Level

Idle		29.3 / 29.3 / 29.6 dB(A)
Load		32.4 / 33.3 dB(A)

	30 dB silent 40 dB(A) audible 50 dB(A) loud
min: , med: , max: Audix TM1, Arta (15 cm distance) environment noise: 29.3 dB(A)

Temperature

The surface temperatures of the Lenovo Yoga C740-14IML barely increase at all. The peak value of 42.3 °C on the bottom is not in any way problematic.

Over the course of the Prime95 and FurMark stress tests, the combined CPU/GPU consumption drops to only 14 watts. As a result, the CPU clock decreases to only 900 MHz. This TDP throttling does not impact day-to-day use, however.

Max. Load

Idle


38.2 °C 101 F	40.1 °C 104 F	39.3 °C 103 F
35 °C 95 F	33.4 °C 92 F	27.4 °C 81 F
25.3 °C 78 F	25.4 °C 78 F	24.6 °C 76 F

Maximum: 40.1 °C = 104 F
Average: 32.1 °C = 90 F


38 °C 100 F	42.3 °C 108 F	40.1 °C 104 F
27.2 °C 81 F	34.6 °C 94 F	34.1 °C 93 F
25.4 °C 78 F	27.6 °C 82 F	27.6 °C 82 F

Maximum: 42.3 °C = 108 F
Average: 33 °C = 91 F

Power Supply (max.) 36 °C = 97 F | Room Temperature 20.1 °C = 68 F | Voltcraft IR-900

(±) The average temperature for the upper side under maximal load is 32.1 °C / 90 F, compared to the average of 30.2 °C / 86 F for the devices in the class Convertible.
(±) The maximum temperature on the upper side is 40.1 °C / 104 F, compared to the average of 35.3 °C / 96 F, ranging from 19.6 to 55.7 °C for the class Convertible.
(±) The bottom heats up to a maximum of 42.3 °C / 108 F, compared to the average of 36.7 °C / 98 F
(+) In idle usage, the average temperature for the upper side is 22.2 °C / 72 F, compared to the device average of 30.2 °C / 86 F.
(+) The palmrests and touchpad are cooler than skin temperature with a maximum of 25.4 °C / 77.7 F and are therefore cool to the touch.
(+) The average temperature of the palmrest area of similar devices was 28.1 °C / 82.6 F (+2.7 °C / 4.9 F).

Speakers

The two speakers on the bottom are Dolby-Atmos certified. For a laptop, they sound relatively good and there is even a hint of bass. Alternatively, headphones can be used. The combined audio jack outputs sound flawlessly.

Frequency diagram (checkboxes can be checked and unchecked to compare devices)

Lenovo Yoga C740-15IML audio analysis

(±) | speaker loudness is average but good (73.3 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 10.4% lower than median
(±) | linearity of bass is average (11.1% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 7.2% higher than median
(+) | mids are linear (6.4% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2.2% away from median
(±) | linearity of highs is average (10.5% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (21.3% difference to median)
Compared to same class
» 51% of all tested devices in this class were better, 13% similar, 37% worse
» The best had a delta of 6%, average was 21%, worst was 57%
Compared to all devices tested
» 53% of all tested devices were better, 7% similar, 39% worse
» The best had a delta of 4%, average was 26%, worst was 134%

Lenovo Yoga 730-15IKB audio analysis

(±) | speaker loudness is average but good (73.3 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 16.9% lower than median
(±) | linearity of bass is average (12.2% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 4% away from median
(±) | linearity of mids is average (7.7% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2.6% away from median
(+) | highs are linear (6.1% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (16.6% difference to median)
Compared to same class
» 22% of all tested devices in this class were better, 4% similar, 74% worse
» The best had a delta of 6%, average was 21%, worst was 57%
Compared to all devices tested
» 23% of all tested devices were better, 5% similar, 72% worse
» The best had a delta of 4%, average was 26%, worst was 134%

Energy Management: Lenovo Yoga C740-15IML Lasts Longer than its Predecessor

Energy Consumption

Particularly while idling on the most economical settings, the energy consumption of the Lenovo Yoga C740-15IML is very low. Under load, we recorded a peak consumption value of 64.7 watts, which fits perfectly into the 65-watt rating of the AC adapter.

Power Consumption

Off / Standby	0.4 / 0.68 Watt
Idle	2.97 / 7.2 / 9.9 Watt
Load	40.8 / 64.7 Watt


Key: min: , med: , max: Metrahit Energy Currently we use the Metrahit Energy, a professional single phase power quality and energy measurement digital multimeter, for our measurements. Find out more about it here. All of our test methods can be found here.

	Lenovo Yoga C740-15IML i7-10510U, UHD Graphics 620, Samsung SSD PM981 MZVLB512HAJQ, IPS LED, 1920x1080, 15.60	Lenovo Yoga 730-15IKB i5-8550U, GeForce GTX 1050 Mobile, SK Hynix PC401 512GB M.2 (HFS512GD9TNG), IPS, 3840x2160, 15.60	Lenovo Yoga C940-15IRH i7-9750H, GeForce GTX 1650 Max-Q, Intel Optane Memory H10 with Solid State Storage 32GB + 512GB HBRPEKNX0202A(L/H), IPS, 1920x1080, 15.60	Dell Inspiron 15 5579-9672 i5-8250U, UHD Graphics 620, SK hynix SC311 SATA, IPS, 1920x1080, 15.60	Asus ZenBook Flip 15 UX561UD i5-8550U, GeForce GTX 1050 Mobile, Micron 1100 MTFDDAV256TBN, IPS, 3840x2160, 15.60	HP Envy x360 15-bq102ng R5 2500U, Vega 8, Samsung PM961 MZVLW256HEHP, IPS, 1920x1080, 15.60	Average Intel UHD Graphics 620	Average of class Convertible
Power Consumption		-33%	-99%	12%	-76%	-5%	6%	-19%
Idle Minimum *	2.97	4.8 -62%	5.2 -75%	3.9 -31%	5.4 -82%	4.8 -62%	3.81 ?(1 - 12.4, n=259) -28%	5.27 ?(0.8 - 16.6, n=65, last 2 years) -77%
Idle Average *	7.2	10.1 -40%	10.7 -49%	6.6 8%	10.8 -50%	7 3%	6.94 ?(2.8 - 15.7, n=261) 4%	8.22 ?(3.8 - 20.7, n=65, last 2 years) -14%
Idle Maximum *	9.9	10.7 -8%	24.3 -145%	9.3 6%	13.9 -40%	9.5 4%	8.75 ?(3.8 - 30, n=259) 12%	10.2 ?(3.9 - 29.9, n=65, last 2 years) -3%
Load Average *	40.8	44 -8%	84.4 -107%	30.2 26%	94 -130%	40.8 -0%	35 ?(8.1 - 51.6, n=259) 14%	43.2 ?(5.4 - 101.3, n=65, last 2 years) -6%
Load Maximum *	64.7	94.7 -46%	142.8 -121%	33.2 49%	116.6 -80%	44.3 32%	47.5 ?(22 - 96.3, n=261) 27%	60.8 ?(8.9 - 155.7, n=65, last 2 years) 6%
Witcher 3 ultra *			83.9

* ... smaller is better

Battery Life

The battery has grown from 51.5 to 60.3 watt hours compared to the preceding model. Combined with the lower energy consumption, this results in significantly better battery life. In our Wi-Fi test, which is performed at 150 cd/m² LCD brightness, the Yoga C740-15IML achieves a runtime of almost 12 hours. When performing this test at maximum brightness, it still lasts more than eight hours. The Yoga 730-15IKB only reaches a good seven hours in our Wi-Fi test (150 cd/m²). Similarly, the Lenovo Yoga C940-15IRH's battery life is not quite as good despite the larger 69-watt hour battery.

Battery Runtime

WiFi Websurfing (Edge)		10h 22min
WiFi Websurfing max. Brightness (Edge)		8h 15min
Big Buck Bunny H.264 1080p		11h 55min
Load (maximum brightness)		2h 00min

	Lenovo Yoga C740-15IML i7-10510U, UHD Graphics 620, 60.3 Wh	Lenovo Yoga 730-15IKB i5-8550U, GeForce GTX 1050 Mobile, 51.5 Wh	Lenovo Yoga C940-15IRH i7-9750H, GeForce GTX 1650 Max-Q, 69 Wh	Dell Inspiron 15 5579-9672 i5-8250U, UHD Graphics 620, 42 Wh	Asus ZenBook Flip 15 UX561UD i5-8550U, GeForce GTX 1050 Mobile, 52 Wh	HP Envy x360 15-bq102ng R5 2500U, Vega 8, 55.8 Wh	Average of class Convertible
Battery Runtime		-51%	-29%	-27%	-48%	-32%	-5%
H.264	715	324 -55%		401 -44%	261 -63%		657 ?(374 - 875, n=15, last 2 years) -8%
WiFi v1.3	622	370 -41%	583 -6%	435 -30%	311 -50%	426 -32%	560 ?(335 - 876, n=65, last 2 years) -10%
Load	120	50 -58%	59 -51%	110 -8%	84 -30%		124 ?(53 - 226, n=45, last 2 years) 3%
Reader / Idle		697	1092	671	558		1175 ?(680 - 1667, n=25, last 2 years)

Pros

+ robust, high-quality aluminum chassis

+ digitizer pen included

+ very low noise/heat development

+ good speakers

+ excellent battery life

Cons

- weaker performance than its predecessor

- no Thunderbolt 3

- 4K UHD option has been cut

- dimly lit Full HD LCD with poor color accuracy

Verdict

In review: Lenovo Yoga C740-15IML. Courtesy of

The transformation from the Yoga 720-15IKB to the Yoga 730-15IKB and finally, the latest Yoga C740-15IML is remarkable: From a high-performance convertible with an Nvidia GeForce GTX GPU (and a 45-watt processor in the case of the Yoga 720) to an ultrabook convertible with a ULV CPU and no dGPU at all. Evidently, the initial role of this series has been assumed by the new and more expensive Lenovo Yoga C940-15IRH.

What is left is a good convertible in a premium aluminum chassis with a digitizer pen and very small noise and heat development as well as good battery life. However, the Yoga C740-15IML is weaker than its predecessor in terms of performance due to the lack of a dGPU and the inferior cooling solution. The loss of the Thunderbolt 3 port is painful and there is no 4K UHD option anymore.

Performance downgrade: The Yoga C740-15IML is a different convertible compared to its two predecessors. While this is not necessarily all bad, buyers should definitely steer clear of our configuration's dim Full HD display. Fortunately, there is a brighter LCD option.

We could definitely recommend the Lenovo Yoga C740-15IML to users looking for a low-powered 15.6-inch convertible - if it weren't for the display's far too low brightness level. Due to this, we strongly advise against this specific model. Instead, buyers of the Yoga C740-15IML should choose the Full HD version with 500 cd/m². While we were not yet able to ascertain its qualities, they can hardly be worse than those of the panel in this test device.

Lenovo Yoga C740-15IML - 2020-01-04 01/04/2020 v7
Benjamin Herzig

Chassis

87 / 98 → 89%

Keyboard

79%

Pointing Device

85 / 20-75 → 100%

Connectivity

62%

Weight

65%

Battery

88 / 85 → 100%

Display

77%

Games Performance

52%

Application Performance

83 / 91 → 91%

Temperature

93%

Noise

97%

Audio

65%

Camera

34%

Average

75%

85%

Convertible - Weighted Average

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Editor of the original article: Benjamin Herzig - Managing Editor - 1106 articles published on Notebookcheck since 2016

I was an ardent reader of Notebookcheck’s laptop reviews even back in school. After writing reviews as a hobby, I then joined Notebookcheck in 2016 and have worked on device reviews and news articles ever since then. My personal interest lies more with laptops than smartphones, with business laptops being the most interesting category for me. Technology should make our lives and work easier and good laptops are an essential tool for that to happen. This is why laptop reviews are not just my work but are also my passion.

contact me via: LinkedIn

Translator: Marius Schell - Tech Writer - 398 articles published on Notebookcheck since 2020

Even in my youth I was already very enthusiastic about technology, and as a result I started building PCs, optimizing them, and writing programs while I was still in school. When dealing with the inevitable hardware and software problems associated with computers, I was always relentless in my search for the necessary solutions. The compact forms of laptops and smartphones introduced further challenges in this regard. In my reviews for Notebookcheck I try to communicate as objectively as possible how well a device copes with these hurdles.

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> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > Reviews > Lenovo Yoga C740-15IML Laptop Review: Strong Battery Life, Weak Display

Benjamin Herzig, 2020-01- 7 (Update: 2020-01- 9)

Lenovo Yoga C740-15IML Laptop Review: Strong Battery Life, Weak Display

Case: Yoga Tablet with Aluminum Chassis

Size Comparison

Connectivity: No More Thunderbolt for the Lenovo Yoga C740-15IML

Communication

Accessories

Maintenance

Warranty

Input devices: Digitizer Pen Included

Keyboard

Touchpad

Touchscreen & Stylus

Display: The Biggest Weakness of the Lenovo Laptop

Display Response Times

Screen Flickering / PWM (Pulse-Width Modulation)

Performance: Yoga Laptop C740-15IML is Slower than the Older Model

Processor

System Performance

Storage Solution

GPU Performance

Gaming Performance

Emissions: Lenovo Yoga with Good Speakers & Low Heat/Noise Levels

System Noise

Temperature

Speakers

Lenovo Yoga C740-15IML audio analysis

Lenovo Yoga 730-15IKB audio analysis

Energy Management: Lenovo Yoga C740-15IML Lasts Longer than its Predecessor

Energy Consumption

Battery Life

Pros

Cons

Verdict

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