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Lenovo Yoga C940-14IIL Review: The 14-inch Consumer Convertible to Beat

The 4K Ice Lake difference. Is it worth spending a few extra Benjamims for the 4K display over the cheaper FHD option? Aside from a meaurable cut in battery life, the 4K SKU brings both deeper colors and a brighter display.

The 14-inch Yoga C940 is a direct successor to last year's 13.9-inch Yoga C930. Aside from the small bump in screen size, the newer model brings with it a number of smaller changes as detailed in our first review of the FHD SKU here. This review will focus on the 4K UHD SKU to see what kinds of improvements or differences we can expect between the FHD and 4K options.

Other than the display disparities, everything else about our 4K SKU remains identical to the FHD SKU and so we recommend checking out our existing review to learn more about the chassis and its features. A 15.6-inch version of the Yoga C940 is also available with faster Core H-series CPUs and GeForce Max-Q graphics.

The 14-inch Yoga C940 competes directly with other flagship subnotebooks and convertibles including the HP Spectre x360 13, Dell XPS 13 7390 2-in-1, Asus ZenBook Flip 14, and the Microsoft Surface Book series.

More Lenovo reviews:

Lenovo Yoga C940-14IIL 81Q9 (Yoga C940 Series)
Processor
Intel Core i7-1065G7 4 x 1.3 - 3.9 GHz, Ice Lake-U
Graphics adapter
Intel Iris Plus Graphics G7 (Ice Lake 64 EU), Core: 300 MHz, Memory: 1800 MHz, DDR4, 25.20.100.7014
Memory
16 GB 
, 1866.7 MHz, 20-20-20-45, Dual-Channel
Display
14.00 inch 16:9, 3840 x 2160 pixel 315 PPI, 10-point capacitive, native pen support, BOE HF NV140QUM-N54, IPS, glossy: yes
Mainboard
Intel 495 (Ice Lake-U PCH-LP Premium)
Storage
Soundcard
Intel Ice Lake-U/Y PCH-LP cAVS
Connections
3 USB 3.1 Gen2, 2 Thunderbolt, 2 DisplayPort, Audio Connections: Combo audio, 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
Size
height x width x depth (in mm): 15.7 x 320.3 x 215.6 ( = 0.62 x 12.61 x 8.49 in)
Battery
60 Wh Lithium-Polymer
Operating System
Microsoft Windows 10 Home 64 Bit
Camera
Webcam: 720p with privacy slider
Additional features
Speakers: 4 x 2 W Quad speakers, Keyboard: Chiclet, Keyboard Light: yes, Lenovo WACOM AES Pen, McAfee LiveSafe, Microsoft Office Trial, Lenovo Pen Settings, Lenovo Vantage, 12 Months Warranty
Weight
1.35 kg ( = 47.62 oz / 2.98 pounds), Power Supply: 357 g ( = 12.59 oz / 0.79 pounds)
Price
1400 USD
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

Rating
Date
Model
Weight
Height
Size
Resolution
Best Price
87 %
12/2019
Lenovo Yoga C940-14IIL 81Q9
i7-1065G7, Iris Plus Graphics G7 (Ice Lake 64 EU)
1.4 kg15.7 mm14.00"3840x2160
86.3 %
10/2019
Dell XPS 13 7390 2-in-1 Core i7
i7-1065G7, Iris Plus Graphics G7 (Ice Lake 64 EU)
1.3 kg13 mm13.40"1920x1200
87.6 %
05/2018
Huawei Matebook X Pro i5
i5-8250U, GeForce MX150
1.3 kg14.6 mm13.90"3000x2000
85.2 %
11/2019
MSI Prestige 15 A10SC
i7-10710U, GeForce GTX 1650 Max-Q
1.7 kg16 mm15.60"3840x2160
86.3 %
10/2019
Razer Blade Stealth i7-1065G7 Iris Plus
i7-1065G7, Iris Plus Graphics G7 (Ice Lake 64 EU)
1.4 kg15.3 mm13.30"1920x1080

Case

322 mm / 12.7 inch 215 mm / 8.46 inch 18.9 mm / 0.744 inch 1.6 kg3.53 lbs323 mm / 12.7 inch 223.5 mm / 8.8 inch 13.95 mm / 0.549 inch 1.4 kg3.02 lbs322 mm / 12.7 inch 227 mm / 8.94 inch 14.9 mm / 0.587 inch 1.4 kg3.1 lbs320.3 mm / 12.6 inch 215.6 mm / 8.49 inch 15.7 mm / 0.618 inch 1.4 kg2.98 lbs304 mm / 12 inch 217 mm / 8.54 inch 14.6 mm / 0.575 inch 1.3 kg2.93 lbs296 mm / 11.7 inch 207 mm / 8.15 inch 13 mm / 0.512 inch 1.3 kg2.93 lbs297 mm / 11.7 inch 210 mm / 8.27 inch 1 mm / 0.03937 inch 5.7 g0.01257 lbs

Communication

The Intel AX201 allows for Wi-Fi 6 connectivity to offer over two times the transfer rates of Wi-Fi 5 should you have a Wi-Fi 6 compatible router. The AX201 is functionally identical to the AX200 but with certain hardware changes.

Networking
iperf3 transmit AX12
MSI Prestige 15 A10SC
Intel Wi-Fi 6 AX200
1374 (720min - 1484max) MBit/s
Lenovo Yoga C930-13IKB 81C4
Intel Wireless-AC 9260
640 MBit/s
Asus ZenBook S13 UX392FN
Intel Wireless-AC 9560
530 MBit/s
iperf3 receive AX12
MSI Prestige 15 A10SC
Intel Wi-Fi 6 AX200
1291 (1212min - 1379max) MBit/s
Asus ZenBook S13 UX392FN
Intel Wireless-AC 9560
663 MBit/s
Lenovo Yoga C930-13IKB 81C4
Intel Wireless-AC 9260
617 MBit/s

Maintenance

The bottom panel is secured by T5 Torx screws and it is very difficult to remove without damaging the chassis. The sharp edges are very tight even with a sharp edge to make servicing unfriendly for the end user.

Display

14-inch screens with native 4K UHD resolution are uncommon and so it's unsurprising that the BOE HF NV140QUM-N54 IPS panel on this Lenovo can be found on no other laptop in our database thus far. Nonetheless, the panel compares favorably when up against the more common Sharp, AU Optronics, or LG Philips panels on most other Ultrabooks. Core attributes like contrast are excellent at over 1500:1 with deep colors, crisp text, and decent response times. Our only major complaint is that it's limited to a 60 Hz refresh rate compared to 120 Hz on the HP EliteBook 1040 G5.

Perhaps the most notable feature of the screen is its brightness. While Lenovo claims 500 nits for both its FHD and 4K UHD SKUs, we were only able to measure just 384 nits on our FHD test unit. Fortunately, this 4K UHD unit is as bright as Lenovo claims it to be which puts it well above last year's Yoga C930 and on par with the competing XPS 13 7390 2-in-1.

Edge-to-edge glass touchscreen in FHD or 4K UHD
Edge-to-edge glass touchscreen in FHD or 4K UHD
Narrow bezels on three sides
Narrow bezels on three sides
Light-moderate uneven backlight bleeding along the corners
Light-moderate uneven backlight bleeding along the corners
Crisp RGB subpixel array as expected from a glossy panel
Crisp RGB subpixel array as expected from a glossy panel
544.8
cd/m²
549
cd/m²
527.2
cd/m²
503.7
cd/m²
501.7
cd/m²
492.7
cd/m²
466.1
cd/m²
472.2
cd/m²
448.1
cd/m²
Distribution of brightness
BOE HF NV140QUM-N54 tested with X-Rite i1Pro 2
Maximum: 549 cd/m² (Nits) Average: 500.6 cd/m² Minimum: 30 cd/m²
Brightness Distribution: 82 %
Center on Battery: 501.7 cd/m²
Contrast: 1568:1 (Black: 0.32 cd/m²)
ΔE Color 5.48 | 0.5-29.43 Ø5, calibrated: 2.22
ΔE Greyscale 8.1 | 0.57-98 Ø5.3
100% sRGB (Argyll 1.6.3 3D)
74.1% AdobeRGB 1998 (Argyll 1.6.3 3D)
83.3% AdobeRGB 1998 (Argyll 2.2.0 3D)
99.9% sRGB (Argyll 2.2.0 3D)
83.8% Display P3 (Argyll 2.2.0 3D)
Gamma: 2.07
Lenovo Yoga C940-14IIL 81Q9
BOE HF NV140QUM-N54, IPS, 14.00, 3840x2160
Lenovo Yoga C930-13IKB 81C4
AUO B139HAN03_0, IPS, 13.90, 1920x1080
Lenovo Yoga C940-14IIL
LP140WF9-SPE2, IPS LED, 14.00, 1920x1080
Dell XPS 13 7390 2-in-1 Core i7
Sharp LQ134N1, IPS, 13.40, 1920x1200
Razer Blade Stealth i7-1065G7 Iris Plus
Sharp LQ133M1JW41, IPS, 13.30, 1920x1080
Asus ZenBook S13 UX392FN
Tianma XM, IPS, 13.90, 1920x1080
Display
-18%
-14%
-11%
-14%
-13%
Display P3 Coverage
83.8
62.7
-25%
66
-21%
69.9
-17%
66.2
-21%
67.5
-19%
sRGB Coverage
99.9
92.6
-7%
97.9
-2%
99.2
-1%
97.2
-3%
95.8
-4%
AdobeRGB 1998 Coverage
83.3
64.7
-22%
67.3
-19%
71.5
-14%
67.1
-19%
69
-17%
Response Times
15%
-11%
-7%
-12%
2%
Response Time Grey 50% / Grey 80% *
44.4 ?(22.4, 22)
34.4 ?(18.8, 15.6)
23%
49.6 ?(23.6, 26)
-12%
47.6 ?(23.2, 24.4)
-7%
45.2 ?(22.4, 22.8)
-2%
47.2 ?(23.6, 23.6)
-6%
Response Time Black / White *
27.2 ?(15.6, 11.6)
25.6 ?(15.6, 10)
6%
30 ?(16.4, 13.6)
-10%
29.2 ?(16, 13.2)
-7%
33.2 ?(17.6, 15.6)
-22%
24.8 ?(14, 10.8)
9%
PWM Frequency
2500 ?(25)
22730 ?(24)
Screen
-25%
19%
19%
20%
16%
Brightness middle
501.7
312
-38%
384
-23%
549.8
10%
422.6
-16%
466
-7%
Brightness
501
295
-41%
363
-28%
520
4%
404
-19%
462
-8%
Brightness Distribution
82
87
6%
90
10%
86
5%
87
6%
90
10%
Black Level *
0.32
0.43
-34%
0.17
47%
0.39
-22%
0.35
-9%
0.33
-3%
Contrast
1568
726
-54%
2259
44%
1410
-10%
1207
-23%
1412
-10%
Colorchecker dE 2000 *
5.48
7.6
-39%
3.5
36%
2.12
61%
1.02
81%
1.93
65%
Colorchecker dE 2000 max. *
10.03
15.06
-50%
5.5
45%
3.66
64%
3.06
69%
4.26
58%
Colorchecker dE 2000 calibrated *
2.22
1.96
12%
1
55%
1.37
38%
0.95
57%
1.99
10%
Greyscale dE 2000 *
8.1
8.8
-9%
4.6
43%
2.6
68%
1
88%
1.7
79%
Gamma
2.07 106%
2.01 109%
2.32 95%
2.3 96%
2.21 100%
2.15 102%
CCT
6730 97%
6874 95%
6884 94%
6884 94%
6502 100%
6382 102%
Color Space (Percent of AdobeRGB 1998)
74.1
59.1
-20%
62
-16%
65.4
-12%
62.1
-16%
62.2
-16%
Color Space (Percent of sRGB)
100
92.3
-8%
97.7
-2%
99.7
0%
97.1
-3%
95.7
-4%
Total Average (Program / Settings)
-9% / -19%
-2% / 9%
0% / 10%
-2% / 9%
2% / 9%

* ... smaller is better

Color space is wider than on the FHD panel (74 percent vs. 62 percent AdobeRGB) albeit not quite as wide as Sharp IGZO panels where full AdobeRGB coverage is possible. The slightly deeper colors won't impact day-to-day usage in any significant fashion since full sRGB coverage is available no matter the Yoga C940 SKU.

vs. sRGB
vs. sRGB
vs. AdobeRGB
vs. AdobeRGB

Further measurements with an X-Rite colorimeter reveal an overly warm color temperature and poor RGB balance out of the box which is a shame because we know that the panel is capable of more accurate colors. Calibrating the display ourselves improves both grayscale and colors substantially from average DeltaE values of 8.1 and 5.48 to just 0.8 and 2.22, respectively. We recommend calibrating the display or applying our ICM profile above to get the most out of the laptop.

Grayscale before calibration
Grayscale before calibration
Saturation Sweeps before calibration
Saturation Sweeps before calibration
ColorChecker before calibration
ColorChecker before calibration
Grayscale after calibration
Grayscale after calibration
Saturation Sweeps after calibration
Saturation Sweeps after calibration
ColorChecker after calibration
ColorChecker after calibration

Display Response Times

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
27.2 ms ... rise ↗ and fall ↘ combined↗ 15.6 ms rise
↘ 11.6 ms fall
The screen shows relatively slow response rates in our tests and may be too slow for gamers.
In comparison, all tested devices range from 0.1 (minimum) to 240 (maximum) ms. » 64 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (21.6 ms).
       Response Time 50% Grey to 80% Grey
44.4 ms ... rise ↗ and fall ↘ combined↗ 22.4 ms rise
↘ 22 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. » 72 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (33.9 ms).

Screen Flickering / PWM (Pulse-Width Modulation)

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 18110 (minimum: 5 - maximum: 3846000) Hz was measured.

Our 4K test unit is brighter than our last FHD unit to be the better outdoor companion. Even so, it's best to avoid direct sunlight because of the glossy screen and to increase the font scaling. Consider the 1000-nit HP EliteBook or Dragonfly if you intend to use the convertible outdoors frequently.

Viewing angles are wide as is typical of an IPS panel. Keep in mind that colors and brightness are more stable when on Portrait mode when compared to the larger 15.6-inch Yoga C940.

Outdoors under sunlight
Outdoors under sunlight
Outdoors under shade
Outdoors under shade
Outdoors under sunlight
Outdoors under sunlight
Wide IPS viewing angles
Wide IPS viewing angles

Performance

While CPU and RAM remain identical to our FHD SKU, we have since been able to update the Intel graphics driver to 25.20.100.7014 DCH to fix some 3DMark issues. We're therefore able to paint a more complete picture of the raw performance of the 25 W Core i7-1065G7 this time around.

 

Processor

Processor performance is most similar to the last generation Core i7-8565U or current Zen+ Ryzen 7 3700U in most respects since Ice Lake focuses on gen-to-gen GPU improvements rather than raw CPU performance. However, performance sustainability could be a little better; when running CineBench R15 Multi-Thread in a loop, scores would drop from 750 points to as low as 615 points over time to represent a performance dip of 18 percent. Results are still much better than the 15 W version of the same CPU as found on the Razer Blade Stealth GTX 1650 Max-Q.

See our dedicated page on the Core i7-1065G7 for more technical information and benchmarks.

CineBench R15
CineBench R15
CineBench R20
CineBench R20
04590135180225270315360405450495540585630675720765810Tooltip
Lenovo Yoga C940-14IIL 81Q9 Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Samsung PM981a MZVLB1T0HBLR; CPU Multi 64Bit: Ø627 (606.12-749.06)
Razer Blade Stealth 13, Core i7-1065G7 GeForce GTX 1650 Max-Q, i7-1065G7, Lite-On CA3-8D512; CPU Multi 64Bit: Ø483 (464-551)
Dell XPS 13 7390 2-in-1 Core i7 Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Toshiba BG4 KBG40ZPZ512G; CPU Multi 64Bit: Ø672 (632.81-836.68)
Dell Inspiron 15 5000 5585 Vega 10, R7 3700U, WDC PC SN520 SDAPNUW-512G; CPU Multi 64Bit: Ø654 (639.01-676.19)
Asus ZenBook 15 UX534FT-DB77 GeForce GTX 1650 Max-Q, i7-8565U, Samsung SSD PM981 MZVLB1T0HALR; CPU Multi 64Bit: Ø669 (651.9-718.51)
Cinebench R20
CPU (Single Core)
MSI Prestige 15 A10SC
Intel Core i7-10710U
460 Points +2%
Lenovo Yoga C940-14IIL 81Q9
Intel Core i7-1065G7
452 Points
Average Intel Core i7-1065G7
  (358 - 474, n=31)
438 Points -3%
MSI PS63 Modern 8SC
Intel Core i7-8565U
437 Points -3%
Lenovo Yoga C940-15IRH
Intel Core i7-9750H
434 Points -4%
Lenovo Legion Y540-17IRH
Intel Core i5-9300H
427 Points -6%
Dell G5 15 5590
Intel Core i7-8750H
403 Points -11%
Dell XPS 13 7390 2-in-1 Core i3
Intel Core i3-1005G1
403 Points -11%
Lenovo ThinkPad L590-20Q70019GE
Intel Core i5-8265U
400 Points -12%
Dynabook Portege A30-E-174
Intel Core i7-8550U
383 Points -15%
Dell Latitude 14 5495
AMD Ryzen 7 2700U
381 Points -16%
Dell Latitude 13 3390
Intel Core i5-8250U
351 Points -22%
Dell Inspiron 15 5000 5585
AMD Ryzen 7 3700U
334 Points -26%
CPU (Multi Core)
Dell G5 15 5590
Intel Core i7-8750H
2707 Points +70%
Lenovo Yoga C940-15IRH
Intel Core i7-9750H
2643 Points +66%
MSI Prestige 15 A10SC
Intel Core i7-10710U
2598 Points +63%
Lenovo Legion Y540-17IRH
Intel Core i5-9300H
1877 Points +18%
Lenovo Yoga C940-14IIL 81Q9
Intel Core i7-1065G7
1590 Points
MSI PS63 Modern 8SC
Intel Core i7-8565U
1523 Points -4%
Average Intel Core i7-1065G7
  (1081 - 2024, n=31)
1510 Points -5%
Dell Inspiron 15 5000 5585
AMD Ryzen 7 3700U
1499 Points -6%
Dell Latitude 14 5495
AMD Ryzen 7 2700U
1392 Points -12%
Lenovo ThinkPad L590-20Q70019GE
Intel Core i5-8265U
1162 Points -27%
Dynabook Portege A30-E-174
Intel Core i7-8550U
1138 Points -28%
Dell Latitude 13 3390
Intel Core i5-8250U
1117 Points -30%
Dell XPS 13 7390 2-in-1 Core i3
Intel Core i3-1005G1
948 Points -40%
Cinebench R15
CPU Single 64Bit
MSI Prestige 15 A10SC
Intel Core i7-10710U
191 Points +6%
Lenovo Yoga C940-15IRH
Intel Core i7-9750H
184 Points +2%
MSI PS63 Modern 8SC
Intel Core i7-8565U
183 Points +1%
Lenovo Yoga C940-14IIL 81Q9
Intel Core i7-1065G7
181 Points
Average Intel Core i7-1065G7
  (141 - 190, n=35)
174.2 Points -4%
Lenovo Legion Y540-17IRH
Intel Core i5-9300H
171 Points -6%
Dell G5 15 5590
Intel Core i7-8750H
165 Points -9%
Lenovo ThinkPad L590-20Q70019GE
Intel Core i5-8265U
160 Points -12%
Dell XPS 13 7390 2-in-1 Core i3
Intel Core i3-1005G1
157 Points -13%
Dynabook Portege A30-E-174
Intel Core i7-8550U
156 Points -14%
Dell Latitude 14 5495
AMD Ryzen 7 2700U
148 Points -18%
Dell Latitude 13 3390
Intel Core i5-8250U
143 Points -21%
Dell Inspiron 15 5000 5585
AMD Ryzen 7 3700U
135 Points -25%
CPU Multi 64Bit
Lenovo Yoga C940-15IRH
Intel Core i7-9750H
1231 Points +64%
Dell G5 15 5590
Intel Core i7-8750H
1191 Points +59%
MSI Prestige 15 A10SC
Intel Core i7-10710U
1103 Points +47%
Lenovo Legion Y540-17IRH
Intel Core i5-9300H
850 Points +13%
Lenovo Yoga C940-14IIL 81Q9
Intel Core i7-1065G7
749 Points
MSI PS63 Modern 8SC
Intel Core i7-8565U
695 Points -7%
Dell Inspiron 15 5000 5585
AMD Ryzen 7 3700U
672 Points -10%
Dell Latitude 14 5495
AMD Ryzen 7 2700U
670 Points -11%
Average Intel Core i7-1065G7
  (288 - 836, n=36)
648 Points -13%
Dell Latitude 13 3390
Intel Core i5-8250U
564 Points -25%
Lenovo ThinkPad L590-20Q70019GE
Intel Core i5-8265U
521 (471.69min - 492.04max) Points -30%
Dynabook Portege A30-E-174
Intel Core i7-8550U
494 Points -34%
Dell XPS 13 7390 2-in-1 Core i3
Intel Core i3-1005G1
406 Points -46%
Cinebench R11.5
CPU Single 64Bit
Average Intel Core i7-1065G7
  (2.09 - 2.17, n=4)
2.12 Points
Dell XPS 13 7390 2-in-1 Core i3
Intel Core i3-1005G1
1.88 Points
Dell Latitude 13 3390
Intel Core i5-8250U
1.63 Points
Dell Inspiron 15 5000 5585
AMD Ryzen 7 3700U
1.52 Points
CPU Multi 64Bit
Dell Inspiron 15 5000 5585
AMD Ryzen 7 3700U
7.56 Points
Average Intel Core i7-1065G7
  (5.69 - 9.37, n=4)
7.37 Points
Dell Latitude 13 3390
Intel Core i5-8250U
5.56 Points
Dell XPS 13 7390 2-in-1 Core i3
Intel Core i3-1005G1
4.58 Points
Cinebench R10
Rendering Multiple CPUs 32Bit
Dell G5 15 5590
Intel Core i7-8750H
34465 Points
Lenovo Legion Y540-17IRH
Intel Core i5-9300H
25656 Points
Average Intel Core i7-1065G7
  (16551 - 26481, n=4)
21959 Points
Dynabook Portege A30-E-174
Intel Core i7-8550U
15324 Points
Dell XPS 13 7390 2-in-1 Core i3
Intel Core i3-1005G1
14323 Points
Rendering Single 32Bit
Average Intel Core i7-1065G7
  (7083 - 7390, n=4)
7254 Points
Dell XPS 13 7390 2-in-1 Core i3
Intel Core i3-1005G1
6573 Points
Lenovo Legion Y540-17IRH
Intel Core i5-9300H
6421 Points
Dell G5 15 5590
Intel Core i7-8750H
6338 Points
Dynabook Portege A30-E-174
Intel Core i7-8550U
6212 Points
wPrime 2.10 - 1024m
Dell XPS 13 7390 2-in-1 Core i3
Intel Core i3-1005G1
439.8 s *
Average Intel Core i7-1065G7
  (233 - 354, n=3)
281 s *

* ... smaller is better

Cinebench R15 CPU Single 64Bit
181 Points
Cinebench R15 CPU Multi 64Bit
749 Points
Cinebench R15 OpenGL 64Bit
74.1 fps
Cinebench R15 Ref. Match 64Bit
97.8 %
Help

System Performance

PCMark results are essentially identical to our last Yoga C940 despite the native resolution differences.

PCMark 10 Standard
PCMark 10 Standard
PCMark 8 Home Accelerated
PCMark 8 Home Accelerated
PCMark 8 Work Accelerated
PCMark 8 Work Accelerated
PCMark 10
Score
MSI Prestige 15 A10SC
GeForce GTX 1650 Max-Q, i7-10710U, Samsung SSD PM981 MZVLB1T0HALR
5009 Points +8%
Dell XPS 13 7390 2-in-1 Core i7
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Toshiba BG4 KBG40ZPZ512G
4677 Points +1%
Lenovo Yoga C940-14IIL 81Q9
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Samsung PM981a MZVLB1T0HBLR
4633 Points
Razer Blade Stealth i7-1065G7 Iris Plus
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Samsung SSD PM981 MZVLB256HAHQ
4609 Points -1%
Lenovo Yoga C940-14IIL
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Samsung SSD PM981 MZVLB512HAJQ
4583 Points -1%
Lenovo Yoga C930-13IKB 81C4
UHD Graphics 620, i5-8550U, SK hynix PC401 HFS256GD9TNG
4072 Points -12%
Asus ZenBook S13 UX392FN
GeForce MX150, i7-8565U, WDC PC SN520 SDAPNUW-512G
3970 Points -14%
Essentials
Lenovo Yoga C940-14IIL 81Q9
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Samsung PM981a MZVLB1T0HBLR
9902 Points
Lenovo Yoga C940-14IIL
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Samsung SSD PM981 MZVLB512HAJQ
9678 Points -2%
Dell XPS 13 7390 2-in-1 Core i7
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Toshiba BG4 KBG40ZPZ512G
9678 Points -2%
Razer Blade Stealth i7-1065G7 Iris Plus
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Samsung SSD PM981 MZVLB256HAHQ
9664 Points -2%
Lenovo Yoga C930-13IKB 81C4
UHD Graphics 620, i5-8550U, SK hynix PC401 HFS256GD9TNG
9291 Points -6%
MSI Prestige 15 A10SC
GeForce GTX 1650 Max-Q, i7-10710U, Samsung SSD PM981 MZVLB1T0HALR
9048 Points -9%
Asus ZenBook S13 UX392FN
GeForce MX150, i7-8565U, WDC PC SN520 SDAPNUW-512G
7962 Points -20%
Productivity
Razer Blade Stealth i7-1065G7 Iris Plus
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Samsung SSD PM981 MZVLB256HAHQ
7245 Points +4%
Dell XPS 13 7390 2-in-1 Core i7
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Toshiba BG4 KBG40ZPZ512G
7179 Points +3%
Lenovo Yoga C940-14IIL 81Q9
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Samsung PM981a MZVLB1T0HBLR
6989 Points
Lenovo Yoga C940-14IIL
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Samsung SSD PM981 MZVLB512HAJQ
6924 Points -1%
MSI Prestige 15 A10SC
GeForce GTX 1650 Max-Q, i7-10710U, Samsung SSD PM981 MZVLB1T0HALR
6832 Points -2%
Lenovo Yoga C930-13IKB 81C4
UHD Graphics 620, i5-8550U, SK hynix PC401 HFS256GD9TNG
6505 Points -7%
Asus ZenBook S13 UX392FN
GeForce MX150, i7-8565U, WDC PC SN520 SDAPNUW-512G
6398 Points -8%
Digital Content Creation
MSI Prestige 15 A10SC
GeForce GTX 1650 Max-Q, i7-10710U, Samsung SSD PM981 MZVLB1T0HALR
5520 Points +41%
Dell XPS 13 7390 2-in-1 Core i7
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Toshiba BG4 KBG40ZPZ512G
3998 Points +2%
Lenovo Yoga C940-14IIL 81Q9
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Samsung PM981a MZVLB1T0HBLR
3902 Points
Lenovo Yoga C940-14IIL
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Samsung SSD PM981 MZVLB512HAJQ
3900 Points 0%
Razer Blade Stealth i7-1065G7 Iris Plus
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Samsung SSD PM981 MZVLB256HAHQ
3796 Points -3%
Asus ZenBook S13 UX392FN
GeForce MX150, i7-8565U, WDC PC SN520 SDAPNUW-512G
3334 Points -15%
Lenovo Yoga C930-13IKB 81C4
UHD Graphics 620, i5-8550U, SK hynix PC401 HFS256GD9TNG
3033 Points -22%
PCMark 8
Home Score Accelerated v2
Razer Blade Stealth i7-1065G7 Iris Plus
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Samsung SSD PM981 MZVLB256HAHQ
4030 Points +17%
Lenovo Yoga C940-14IIL
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Samsung SSD PM981 MZVLB512HAJQ
4003 Points +16%
Dell XPS 13 7390 2-in-1 Core i7
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Toshiba BG4 KBG40ZPZ512G
3982 Points +15%
Asus ZenBook S13 UX392FN
GeForce MX150, i7-8565U, WDC PC SN520 SDAPNUW-512G
3712 Points +8%
Lenovo Yoga C930-13IKB 81C4
UHD Graphics 620, i5-8550U, SK hynix PC401 HFS256GD9TNG
3615 Points +5%
MSI Prestige 15 A10SC
GeForce GTX 1650 Max-Q, i7-10710U, Samsung SSD PM981 MZVLB1T0HALR
3546 Points +3%
Lenovo Yoga C940-14IIL 81Q9
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Samsung PM981a MZVLB1T0HBLR
3448 Points
Work Score Accelerated v2
Razer Blade Stealth i7-1065G7 Iris Plus
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Samsung SSD PM981 MZVLB256HAHQ
5173 Points +18%
Asus ZenBook S13 UX392FN
GeForce MX150, i7-8565U, WDC PC SN520 SDAPNUW-512G
5159 Points +18%
Lenovo Yoga C940-14IIL
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Samsung SSD PM981 MZVLB512HAJQ
5158 Points +18%
Lenovo Yoga C930-13IKB 81C4
UHD Graphics 620, i5-8550U, SK hynix PC401 HFS256GD9TNG
5110 Points +17%
Dell XPS 13 7390 2-in-1 Core i7
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Toshiba BG4 KBG40ZPZ512G
5086 Points +16%
MSI Prestige 15 A10SC
GeForce GTX 1650 Max-Q, i7-10710U, Samsung SSD PM981 MZVLB1T0HALR
4483 Points +2%
Lenovo Yoga C940-14IIL 81Q9
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Samsung PM981a MZVLB1T0HBLR
4382 Points
PCMark 8 Home Score Accelerated v2
3448 points
PCMark 8 Work Score Accelerated v2
4382 points
PCMark 10 Score
4633 points
Help

Storage Devices

Whereas our Yoga C940 FHD SKU comes equipped with a 512 GB Samsung PM981, our Yoga C940 4K SKU comes with the larger 1 TB version. Performance is otherwise very similar between them with average sequential read and write rates reaching more than 2200 MB/s and 1200 MB/s each, respectively. See our table of HDDs and SSDs for more comparisons between drives.

AS SSD
AS SSD
CDM 5.5
CDM 5.5
Lenovo Yoga C940-14IIL 81Q9
Samsung PM981a MZVLB1T0HBLR
Lenovo Yoga C930-13IKB 81C4
SK hynix PC401 HFS256GD9TNG
Lenovo Yoga C940-14IIL
Samsung SSD PM981 MZVLB512HAJQ
Dell XPS 13 7390 2-in-1 Core i7
Toshiba BG4 KBG40ZPZ512G
Razer Blade Stealth i7-1065G7 Iris Plus
Samsung SSD PM981 MZVLB256HAHQ
Asus ZenBook S13 UX392FN
WDC PC SN520 SDAPNUW-512G
AS SSD
-162%
3%
-74%
-45%
-15%
Seq Read
2213
1228
-45%
2525
14%
1801
-19%
1989
-10%
1224
-45%
Seq Write
1401
544
-61%
1253
-11%
1125
-20%
827
-41%
907
-35%
4K Read
55.2
39.16
-29%
59.1
7%
39.7
-28%
40.12
-27%
41.46
-25%
4K Write
130.3
106.5
-18%
134.1
3%
67
-49%
135.1
4%
126.2
-3%
4K-64 Read
878
466.4
-47%
1010
15%
1253
43%
531
-40%
1021
16%
4K-64 Write
1478
305.1
-79%
1461
-1%
209
-86%
309.9
-79%
1251
-15%
Access Time Read *
0.036
0.46
-1178%
0.052
-44%
0.069
-92%
0.085
-136%
0.053
-47%
Access Time Write *
0.086
0.51
-493%
0.029
66%
0.625
-627%
0.09
-5%
0.027
69%
Score Read
1154
628
-46%
1322
15%
1472
28%
770
-33%
1185
3%
Score Write
1748
466
-73%
1721
-2%
388
-78%
528
-70%
1468
-16%
Score Total
3467
1394
-60%
3670
6%
2583
-25%
1644
-53%
3250
-6%
Copy ISO MB/s
2161
628
-71%
2016
-7%
1293
-40%
1418
-34%
1404
-35%
Copy Program MB/s
572
540
-6%
542
-5%
560
-2%
382.7
-33%
402.4
-30%
Copy Game MB/s
1433
533
-63%
1278
-11%
927
-35%
334.2
-77%
902
-37%

* ... smaller is better

Samsung PM981a MZVLB1T0HBLR
CDM 5/6 Read Seq Q32T1: 3564 MB/s
CDM 5/6 Write Seq Q32T1: 3019 MB/s
CDM 5/6 Read 4K Q32T1: 404.5 MB/s
CDM 5/6 Write 4K Q32T1: 445 MB/s
CDM 5 Read Seq: 2359 MB/s
CDM 5 Write Seq: 1949 MB/s
CDM 5/6 Read 4K: 45.25 MB/s
CDM 5/6 Write 4K: 128.6 MB/s

GPU Performance

As mentioned before, 3DMark benchmarks paint a very different picture from real-world gaming performance. While 3DMark scores are within single-digit percentage points of the Radeon RX Vega 10 and about 20 to 27 percent behind the GeForce MX250, performance in games can vary wildly. Shadow of the Tomb Raider, for example, is 30 to 40 percent slower than the RX Vega 10 and MX250 while frame rates in Rocket League are more comparable. If you plan on doing any gaming at all, then your best bet is to stick with undemanding titles like Rocket League, Fortnite, or LoL where performance will be more reliable.

Performance will always be significantly faster than the last generation UHD Graphics 620 that the Ice Lake series replaces by at least 2x in most cases.

See our dedicated page on the Iris Plus G7 for more benchmark comparisons.

3DMark 11
3DMark 11
Ice Storm Ultra
Ice Storm Ultra
Cloud Gate
Cloud Gate
Fire Strike
Fire Strike
Fire Strike Ultra
Fire Strike Ultra
Time Spy
Time Spy
3DMark
1280x720 Cloud Gate Standard Graphics
Asus Zephyrus S GX531GM
NVIDIA GeForce GTX 1060 Mobile, i7-8750H
80615 Points +396%
Asus ZenBook 15 UX534FT-DB77
NVIDIA GeForce GTX 1650 Max-Q, i7-8565U
46686 Points +187%
MSI GL62M 7RD-077
NVIDIA GeForce GTX 1050 Mobile, i7-7700HQ
39824 Points +145%
Huawei MateBook 14 KLV-W29
NVIDIA GeForce MX250, i7-8565U
22615 Points +39%
Asus VivoBook 15 X512FL-EJ205T
NVIDIA GeForce MX250, i7-8565U
20961 Points +29%
Dell Inspiron 15 5000 5585
AMD Radeon RX Vega 10, R7 3700U
20784 Points +28%
Microsoft Surface Laptop 3 15 Ryzen 5 3580U
AMD Radeon RX Vega 9, R5 3580U
19255 Points +18%
Asus Zenbook 14 UX433FN-A6023T
NVIDIA GeForce MX150, i7-8565U
18633 Points +15%
Acer Swift 3 SF314-41-R8HZ
AMD Radeon RX Vega 8 (Ryzen 2000/3000), R5 3500U
18528 Points +14%
Lenovo Yoga C940-14IIL 81Q9
Intel Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7
16268 Points
Average Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
  (7024 - 18881, n=24)
15496 Points -5%
Apple MacBook Pro 13 2019 i5 4TB3
Intel Iris Plus Graphics 655, i5-8279U
15084 Points -7%
Lenovo Yoga S730-13IWL
Intel UHD Graphics 620, i7-8565U
8446 Points -48%
1920x1080 Fire Strike Graphics
Asus Zephyrus S GX531GM
NVIDIA GeForce GTX 1060 Mobile, i7-8750H
11332 Points +281%
Asus ZenBook 15 UX534FT-DB77
NVIDIA GeForce GTX 1650 Max-Q, i7-8565U
7593 Points +155%
MSI GL62M 7RD-077
NVIDIA GeForce GTX 1050 Mobile, i7-7700HQ
6382 Points +115%
Huawei MateBook 14 KLV-W29
NVIDIA GeForce MX250, i7-8565U
3664 Points +23%
Asus VivoBook 15 X512FL-EJ205T
NVIDIA GeForce MX250, i7-8565U
3321 Points +12%
Dell Inspiron 15 5000 5585
AMD Radeon RX Vega 10, R7 3700U
2999 Points +1%
Lenovo Yoga C940-14IIL 81Q9
Intel Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7
2973 Points
Asus Zenbook 14 UX433FN-A6023T
NVIDIA GeForce MX150, i7-8565U
2874 Points -3%
Microsoft Surface Laptop 3 15 Ryzen 5 3580U
AMD Radeon RX Vega 9, R5 3580U
2789 Points -6%
Average Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
  (1418 - 3156, n=27)
2594 Points -13%
Acer Swift 3 SF314-41-R8HZ
AMD Radeon RX Vega 8 (Ryzen 2000/3000), R5 3500U
2433 Points -18%
Apple MacBook Pro 13 2019 i5 4TB3
Intel Iris Plus Graphics 655, i5-8279U
2004 Points -33%
Lenovo Yoga S730-13IWL
Intel UHD Graphics 620, i7-8565U
1196 Points -60%
2560x1440 Time Spy Graphics
Asus Zephyrus S GX531GM
NVIDIA GeForce GTX 1060 Mobile, i7-8750H
3626 Points +340%
Asus ZenBook 15 UX534FT-DB77
NVIDIA GeForce GTX 1650 Max-Q, i7-8565U
2836 Points +244%
MSI GL62M 7RD-077
NVIDIA GeForce GTX 1050 Mobile, i7-7700HQ
1744 Points +111%
Huawei MateBook 14 KLV-W29
NVIDIA GeForce MX250, i7-8565U
1130 Points +37%
Asus VivoBook 15 X512FL-EJ205T
NVIDIA GeForce MX250, i7-8565U
1000 Points +21%
Microsoft Surface Laptop 3 15 Ryzen 5 3580U
AMD Radeon RX Vega 9, R5 3580U
872 Points +6%
Asus Zenbook 14 UX433FN-A6023T
NVIDIA GeForce MX150, i7-8565U
862 Points +4%
Dell Inspiron 15 5000 5585
AMD Radeon RX Vega 10, R7 3700U
852 Points +3%
Lenovo Yoga C940-14IIL 81Q9
Intel Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7
825 Points
Average Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
  (526 - 851, n=23)
744 Points -10%
Acer Swift 3 SF314-41-R8HZ
AMD Radeon RX Vega 8 (Ryzen 2000/3000), R5 3500U
742 Points -10%
Apple MacBook Pro 13 2019 i5 4TB3
Intel Iris Plus Graphics 655, i5-8279U
619 Points -25%
Lenovo Yoga S730-13IWL
Intel UHD Graphics 620, i7-8565U
387 Points -53%
3DMark 11
1280x720 Performance GPU
Asus Zephyrus S GX531GM
NVIDIA GeForce GTX 1060 Mobile, i7-8750H
12620 Points +173%
Asus ZenBook 15 UX534FT-DB77
NVIDIA GeForce GTX 1650 Max-Q, i7-8565U
10761 Points +132%
MSI GL62M 7RD-077
NVIDIA GeForce GTX 1050 Mobile, i7-7700HQ
8223 Points +78%
Lenovo Yoga C940-14IIL 81Q9
Intel Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7
4630 Points
Huawei MateBook 14 KLV-W29
NVIDIA GeForce MX250, i7-8565U
4459 Points -4%
Microsoft Surface Laptop 3 15 Ryzen 5 3580U
AMD Radeon RX Vega 9, R5 3580U
4380 Points -5%
Asus VivoBook 15 X512FL-EJ205T
NVIDIA GeForce MX250, i7-8565U
4274 Points -8%
Dell Inspiron 15 5000 5585
AMD Radeon RX Vega 10, R7 3700U
4165 Points -10%
Average Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
  (2112 - 4630, n=28)
3996 Points -14%
Acer Swift 3 SF314-41-R8HZ
AMD Radeon RX Vega 8 (Ryzen 2000/3000), R5 3500U
3949 Points -15%
Asus Zenbook 14 UX433FN-A6023T
NVIDIA GeForce MX150, i7-8565U
3560 Points -23%
Lenovo Yoga S730-13IWL
Intel UHD Graphics 620, i7-8565U
1817 Points -61%
1280x720 Performance Combined
Asus ZenBook 15 UX534FT-DB77
NVIDIA GeForce GTX 1650 Max-Q, i7-8565U
8563 Points +106%
MSI GL62M 7RD-077
NVIDIA GeForce GTX 1050 Mobile, i7-7700HQ
7072 Points +70%
Asus Zephyrus S GX531GM
NVIDIA GeForce GTX 1060 Mobile, i7-8750H
6839 Points +64%
Huawei MateBook 14 KLV-W29
NVIDIA GeForce MX250, i7-8565U
4552 Points +9%
Lenovo Yoga C940-14IIL 81Q9
Intel Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7
4163 Points
Asus VivoBook 15 X512FL-EJ205T
NVIDIA GeForce MX250, i7-8565U
4097 Points -2%
Asus Zenbook 14 UX433FN-A6023T
NVIDIA GeForce MX150, i7-8565U
3707 Points -11%
Dell Inspiron 15 5000 5585
AMD Radeon RX Vega 10, R7 3700U
3247 Points -22%
Average Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
  (1319 - 4163, n=28)
3189 Points -23%
Microsoft Surface Laptop 3 15 Ryzen 5 3580U
AMD Radeon RX Vega 9, R5 3580U
3041 Points -27%
Acer Swift 3 SF314-41-R8HZ
AMD Radeon RX Vega 8 (Ryzen 2000/3000), R5 3500U
2782 Points -33%
Lenovo Yoga S730-13IWL
Intel UHD Graphics 620, i7-8565U
1705 Points -59%
3DMark 11 Performance
4950 points
3DMark Ice Storm Standard Score
58009 points
3DMark Cloud Gate Standard Score
12842 points
3DMark Fire Strike Score
2792 points
3DMark Time Spy Score
934 points
Help
Rocket League
1280x720 Performance
Acer Nitro 5 AN515-42-R6V0
AMD Ryzen 7 2700U, AMD Radeon RX 560X (Laptop)
182 fps +53%
Acer Aspire 5 A515-52G-723L
Intel Core i7-8565U, NVIDIA GeForce MX250
175.4 fps +47%
Xiaomi Mi Notebook Air 13.3 2018
Intel Core i5-8250U, NVIDIA GeForce MX150
156 (126min - 202max) fps +31%
Huawei MateBook 13 i7
Intel Core i7-8565U, NVIDIA GeForce MX150
156 fps +31%
Dell Inspiron 15 5000 5585
AMD Ryzen 7 3700U, AMD Radeon RX Vega 10
119.7 fps +1%
Lenovo Yoga C940-14IIL 81Q9
Intel Core i7-1065G7, Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
119 fps
Average Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
  (22.1 - 123, n=16)
90.6 fps -24%
Dell XPS 13 7390 Core i7-10710U
Intel Core i7-10710U, Intel UHD Graphics 620
76.2 fps -36%
HP ProBook 440 G6-5TK01EA
Intel Core i7-8565U, Intel UHD Graphics 620
25.5 fps -79%
1920x1080 Quality AA:Medium FX
Acer Nitro 5 AN515-42-R6V0
AMD Ryzen 7 2700U, AMD Radeon RX 560X (Laptop)
119 fps +74%
Acer Aspire 5 A515-52G-723L
Intel Core i7-8565U, NVIDIA GeForce MX250
77 fps +12%
Huawei MateBook 13 i7
Intel Core i7-8565U, NVIDIA GeForce MX150
76.1 fps +11%
Lenovo Yoga C940-14IIL 81Q9
Intel Core i7-1065G7, Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
68.5 fps
Dell Inspiron 15 5000 5585
AMD Ryzen 7 3700U, AMD Radeon RX Vega 10
59.9 fps -13%
Xiaomi Mi Notebook Air 13.3 2018
Intel Core i5-8250U, NVIDIA GeForce MX150
57.1 (48min - 75max) fps -17%
Average Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
  (24.9 - 71.3, n=16)
54.1 fps -21%
Dell XPS 13 7390 Core i7-10710U
Intel Core i7-10710U, Intel UHD Graphics 620
36.6 fps -47%
HP ProBook 440 G6-5TK01EA
Intel Core i7-8565U, Intel UHD Graphics 620
16.9 fps -75%
1920x1080 High Quality AA:High FX
Acer Nitro 5 AN515-42-R6V0
AMD Ryzen 7 2700U, AMD Radeon RX 560X (Laptop)
82.8 fps +87%
Acer Aspire 5 A515-52G-723L
Intel Core i7-8565U, NVIDIA GeForce MX250
52.1 fps +18%
Huawei MateBook 13 i7
Intel Core i7-8565U, NVIDIA GeForce MX150
47.4 fps +7%
Lenovo Yoga C940-14IIL 81Q9
Intel Core i7-1065G7, Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
44.3 fps
Xiaomi Mi Notebook Air 13.3 2018
Intel Core i5-8250U, NVIDIA GeForce MX150
39.9 (32min - 56max) fps -10%
Dell Inspiron 15 5000 5585
AMD Ryzen 7 3700U, AMD Radeon RX Vega 10
38.9 fps -12%
Average Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
  (21.1 - 48.5, n=15)
37.9 fps -14%
Dell XPS 13 7390 Core i7-10710U
Intel Core i7-10710U, Intel UHD Graphics 620
23 fps -48%
Shadow of the Tomb Raider - 1280x720 Lowest Preset
Acer Nitro 5 AN515-42-R6V0
AMD Ryzen 7 2700U, AMD Radeon RX 560X (Laptop)
54 fps +108%
Acer Aspire 5 A515-52G-723L
Intel Core i7-8565U, NVIDIA GeForce MX250
46 fps +77%
Dell Inspiron 15 5000 5585
AMD Ryzen 7 3700U, AMD Radeon RX Vega 10
38 fps +46%
Average Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
  (15.6 - 33, n=13)
26.4 fps +2%
Lenovo Yoga C940-14IIL 81Q9
Intel Core i7-1065G7, Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
26 fps
Dell XPS 13 7390 Core i7-10710U
Intel Core i7-10710U, Intel UHD Graphics 620
15 fps -42%
The Witcher 3
1024x768 Low Graphics & Postprocessing
Acer Nitro 5 AN515-42-R6V0
AMD Ryzen 7 2700U, AMD Radeon RX 560X (Laptop)
97.2 fps +84%
Huawei MateBook 13 i7
Intel Core i7-8565U, NVIDIA GeForce MX150
70.5 fps +34%
Acer Aspire 5 A515-52G-723L
Intel Core i7-8565U, NVIDIA GeForce MX250
63.5 fps +20%
Dell Inspiron 15 5000 5585
AMD Ryzen 7 3700U, AMD Radeon RX Vega 10
53.8 fps +2%
Lenovo Yoga C940-14IIL 81Q9
Intel Core i7-1065G7, Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
52.7 fps
Average Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
  (28.2 - 58, n=20)
47.8 fps -9%
Dell XPS 13 7390 Core i7-10710U
Intel Core i7-10710U, Intel UHD Graphics 620
19.7 fps -63%
1366x768 Medium Graphics & Postprocessing
Acer Nitro 5 AN515-42-R6V0
AMD Ryzen 7 2700U, AMD Radeon RX 560X (Laptop)
68.4 fps +88%
Huawei MateBook 13 i7
Intel Core i7-8565U, NVIDIA GeForce MX150
39.7 fps +9%
Acer Aspire 5 A515-52G-723L
Intel Core i7-8565U, NVIDIA GeForce MX250
37.9 fps +4%
Lenovo Yoga C940-14IIL 81Q9
Intel Core i7-1065G7, Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
36.3 fps
Average Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
  (20.8 - 36.8, n=18)
32.1 fps -12%
1920x1080 High Graphics & Postprocessing (Nvidia HairWorks Off)
Acer Nitro 5 AN515-42-R6V0
AMD Ryzen 7 2700U, AMD Radeon RX 560X (Laptop)
33.2 fps +69%
Huawei MateBook 13 i7
Intel Core i7-8565U, NVIDIA GeForce MX150
22.1 fps +13%
Acer Aspire 5 A515-52G-723L
Intel Core i7-8565U, NVIDIA GeForce MX250
20.4 fps +4%
Lenovo Yoga C940-14IIL 81Q9
Intel Core i7-1065G7, Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
19.6 fps
Dell Inspiron 15 5000 5585
AMD Ryzen 7 3700U, AMD Radeon RX Vega 10
18.8 fps -4%
Average Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
  (10.9 - 20.1, n=18)
17 fps -13%
1920x1080 Ultra Graphics & Postprocessing (HBAO+)
Acer Nitro 5 AN515-42-R6V0
AMD Ryzen 7 2700U, AMD Radeon RX 560X (Laptop)
20.6 fps +108%
Huawei MateBook 13 i7
Intel Core i7-8565U, NVIDIA GeForce MX150
11.9 fps +20%
Dell Inspiron 15 5000 5585
AMD Ryzen 7 3700U, AMD Radeon RX Vega 10
11.5 fps +16%
Acer Aspire 5 A515-52G-723L
Intel Core i7-8565U, NVIDIA GeForce MX250
11.4 fps +15%
Lenovo Yoga C940-14IIL 81Q9
Intel Core i7-1065G7, Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
9.9 fps
Xiaomi Mi Notebook Air 13.3 2018
Intel Core i5-8250U, NVIDIA GeForce MX150
9.7 (7min - 12max) fps -2%
Average Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
  (5.13 - 10, n=13)
8.36 fps -16%
BioShock Infinite
1280x720 Very Low Preset
Huawei MateBook 13 i7
Intel Core i7-8565U, NVIDIA GeForce MX150
195 fps +87%
Acer Aspire 5 A515-52G-723L
Intel Core i7-8565U, NVIDIA GeForce MX250
180.2 fps +73%
Dell Inspiron 15 5000 5585
AMD Ryzen 7 3700U, AMD Radeon RX Vega 10
123.7 fps +19%
Lenovo Yoga C940-14IIL 81Q9
Intel Core i7-1065G7, Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
104.2 fps
Average Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
  (48.6 - 112.6, n=18)
94.6 fps -9%
Dell XPS 13 7390 Core i7-10710U
Intel Core i7-10710U, Intel UHD Graphics 620
85.3 fps -18%
HP ProBook 440 G6-5TK01EA
Intel Core i7-8565U, Intel UHD Graphics 620
59.8 fps -43%
1366x768 Medium Preset
Huawei MateBook 13 i7
Intel Core i7-8565U, NVIDIA GeForce MX150
110.3 fps +61%
Acer Aspire 5 A515-52G-723L
Intel Core i7-8565U, NVIDIA GeForce MX250
107 fps +57%
Lenovo Yoga C940-14IIL 81Q9
Intel Core i7-1065G7, Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
68.3 fps
Average Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
  (25.8 - 73, n=18)
58.8 fps -14%
Dell XPS 13 7390 Core i7-10710U
Intel Core i7-10710U, Intel UHD Graphics 620
42 fps -39%
HP ProBook 440 G6-5TK01EA
Intel Core i7-8565U, Intel UHD Graphics 620
34.3 fps -50%
1366x768 High Preset
Acer Aspire 5 A515-52G-723L
Intel Core i7-8565U, NVIDIA GeForce MX250
94 fps +57%
Huawei MateBook 13 i7
Intel Core i7-8565U, NVIDIA GeForce MX150
93.4 fps +56%
Lenovo Yoga C940-14IIL 81Q9
Intel Core i7-1065G7, Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
59.9 fps
Average Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
  (21.1 - 61.5, n=18)
50.2 fps -16%
Dell XPS 13 7390 Core i7-10710U
Intel Core i7-10710U, Intel UHD Graphics 620
35.8 fps -40%
HP ProBook 440 G6-5TK01EA
Intel Core i7-8565U, Intel UHD Graphics 620
27.4 fps -54%
1920x1080 Ultra Preset, DX11 (DDOF)
Acer Aspire 5 A515-52G-723L
Intel Core i7-8565U, NVIDIA GeForce MX250
34.8 fps +57%
Huawei MateBook 13 i7
Intel Core i7-8565U, NVIDIA GeForce MX150
34.3 fps +55%
Xiaomi Mi Notebook Air 13.3 2018
Intel Core i5-8250U, NVIDIA GeForce MX150
29.7 fps +34%
Lenovo Yoga C940-14IIL 81Q9
Intel Core i7-1065G7, Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
22.1 fps
Dell Inspiron 15 5000 5585
AMD Ryzen 7 3700U, AMD Radeon RX Vega 10
21.3 fps -4%
Average Intel Iris Plus Graphics G7 (Ice Lake 64 EU)
  (7.8 - 22.6, n=18)
18.4 fps -17%
Dell XPS 13 7390 Core i7-10710U
Intel Core i7-10710U, Intel UHD Graphics 620
11.2 fps -49%
HP ProBook 440 G6-5TK01EA
Intel Core i7-8565U, Intel UHD Graphics 620
8.2 fps -63%
05101520253035Tooltip
Lenovo Yoga C940-14IIL 81Q9 Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Samsung PM981a MZVLB1T0HBLR: Ø31.9 (25-37)
low med. high ultra
BioShock Infinite (2013) 104.2 68.3 59.9 22.1
The Witcher 3 (2015) 52.7 36.3 19.6 9.9
Rocket League (2017) 119 68.5 44.3
Shadow of the Tomb Raider (2018) 26

Emissions

System Noise

White: Background, Red: System idle, Blue: 3DMark 06, Orange: Witcher 3, Green: Prime95+FurMark
White: Background, Red: System idle, Blue: 3DMark 06, Orange: Witcher 3, Green: Prime95+FurMark

Fan noise is generally quiet at about 29 to 33 dB(A) when under most conditions. However, an annoying pulsing behavior occurs when under higher loads like gaming. For example, fan noise will steadily rise and fall between 31 dB(A) and 40.7 dB(A) when running Witcher 3. We would have preferred a fixed RPM to be more inconspicuous during gameplay.

Our unit exhibits slight electronic noise when placing an ear near the keyboard keys.

Lenovo Yoga C940-14IIL 81Q9
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Samsung PM981a MZVLB1T0HBLR
MSI Prestige 15 A10SC
GeForce GTX 1650 Max-Q, i7-10710U, Samsung SSD PM981 MZVLB1T0HALR
Asus ZenBook S13 UX392FN
GeForce MX150, i7-8565U, WDC PC SN520 SDAPNUW-512G
Lenovo Yoga C930-13IKB 81C4
UHD Graphics 620, i5-8550U, SK hynix PC401 HFS256GD9TNG
Razer Blade Stealth i7-1065G7 Iris Plus
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Samsung SSD PM981 MZVLB256HAHQ
Dell XPS 13 7390 2-in-1 Core i7
Iris Plus Graphics G7 (Ice Lake 64 EU), i7-1065G7, Toshiba BG4 KBG40ZPZ512G
Noise
-3%
-4%
2%
-1%
-1%
off / environment *
28.5
29.3
-3%
28.1
1%
27.9
2%
28.3
1%
28.1
1%
Idle Minimum *
28.5
30.1
-6%
28.1
1%
27.9
2%
28.3
1%
28.1
1%
Idle Average *
28.5
30.2
-6%
28.1
1%
27.9
2%
28.3
1%
28.1
1%
Idle Maximum *
29
30.2
-4%
29
-0%
29.3
-1%
28.3
2%
28.1
3%
Load Average *
33
31.5
5%
41.1
-25%
32
3%
33.5
-2%
31.7
4%
Witcher 3 ultra *
40.7
37
9%
41.1
-1%
34.5
15%
43.4
-7%
Load Maximum *
39.5
47
-19%
41.1
-4%
39.3
1%
49.4
-25%
43.4
-10%

* ... smaller is better

Noise Level

Idle
28.5 / 28.5 / 29 dB(A)
Load
33 / 39.5 dB(A)
  red to green bar
 
 
30 dB
silent
40 dB(A)
audible
50 dB(A)
loud
 
min: dark, med: mid, max: light   Audix TM1, Arta (15 cm distance)   environment noise: 28.5 dB(A)
dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2040.741.147.845.240.5253834.344.943.3383137.734.638.936.336.44035.436.335.835.836.55034.734.936.936.135.86336.734.535.834.734.58035.433.433.833.934.710034.533.333.834.733.212532.432.932.531.532.716031.531.631.131.732.120030.931.230.230.831.22503130.530.229.730.731530.7303030.130.840031.129.929.329.431.550031.129.228.729.230.663031.129.628.128.231.280029.528.728.228.529.9100029.728.628.228.329.2125031.128.828.22830.516003128.82827.830.7200030.628.527.727.730.7250032.32927.427.431.9315031.428.527.427.431.3400030.62827.527.430.1500029.627.927.527.429.3630029.527.827.427.329.4800028.527.427.427.228.31000027.427.427.327.127.51250027.427.227.227.227.41600027.827.427.727.327.3SPL42.640.6404042.4N4.53.93.73.74.4median 30.9median 28.8median 28.1median 28median 30.7Delta1.11.20.60.81.2hearing rangehide median Fan NoiseLenovo Yoga C940-14IIL 81Q9

Temperature

No exhaust from the sides or rear
No exhaust from the sides or rear
AC adapter after running Witcher 3 for an hour
AC adapter after running Witcher 3 for an hour
Max. Load
 35.2 °C
95 F
42.6 °C
109 F
39.2 °C
103 F
 
 30.6 °C
87 F
39.6 °C
103 F
32.4 °C
90 F
 
 29.6 °C
85 F
28 °C
82 F
29.2 °C
85 F
 
Maximum: 42.6 °C = 109 F
Average: 34 °C = 93 F
33 °C
91 F
43.8 °C
111 F
33.4 °C
92 F
29.4 °C
85 F
34.4 °C
94 F
31 °C
88 F
28.2 °C
83 F
29.2 °C
85 F
29.2 °C
85 F
Maximum: 43.8 °C = 111 F
Average: 32.4 °C = 90 F
Power Supply (max.)  36.4 °C = 98 F | Room Temperature 20 °C = 68 F | Fluke 62 Mini IR Thermometer
(±) The average temperature for the upper side under maximal load is 34 °C / 93 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 42.6 °C / 109 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 43.8 °C / 111 F, compared to the average of 36.7 °C / 98 F
(+) In idle usage, the average temperature for the upper side is 23.7 °C / 75 F, compared to the device average of 30.2 °C / 86 F.
(±) Playing The Witcher 3, the average temperature for the upper side is 34.2 °C / 94 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 29.6 °C / 85.3 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 (-1.5 °C / -2.7 F).
System idle (top)
System idle (top)
System idle (bottom)
System idle (bottom)
Witcher 3 stress (top)
Witcher 3 stress (top)
Witcher 3 stress (bottom)
Witcher 3 stress (bottom)
Maximum stress (top)
Maximum stress (top)
Maximum stress (bottom)
Maximum stress (bottom)

Stress Test

We stress the system to identify for any potential throttling or stability issues. When running Prime95, the CPU can be observed boosting up to 3.5 GHz for the first few seconds before eventually falling to 2.9 GHz for the next 30 seconds. CPU temperature would remain stable at about 96 C during this period. Thereafter, clock rates and temperature would drop and cycle indefinitely between 2.3 to 2.4 GHz and 77 C to 81 C, respectively. It's not surprising that the convertible is unable to maintain very high Turbo Boost clock rates for very long periods considering the form factor and what we observed during our CineBench R15 loop test above.

Running Witcher 3 results in a stable GPU clock rate of 1050 Hz and a core temperature of 77 C compared to 85 C on the XPS 13 7390 2-in-1 with the same CPU. Running on battery power will reduce performance just slightly; a 3DMark 11 run on batteries returns Physics and Graphics scores of 9687 and 4502 points, respectively, compared to 10494 and 4594 points when on mains.

System idle
System idle
Witcher 3 stress
Witcher 3 stress
Prime95 stress
Prime95 stress
Prime95+FurMark stress
Prime95+FurMark stress
CPU Clock (GHz) GPU Clock (MHz) Average CPU Temperature (°C)
System Idle -- -- 38
Prime95 Stress 2.3 - 2.4 -- 77 - 81
Prime95 + FurMark Stress 1.2 - 1.3 850 70 - 72
Witcher 3 Stress 1.5 1050 77

Speakers

Pink noise at maximum volume. Speakers are powerful with wide range especially for a subnotebook
Pink noise at maximum volume. Speakers are powerful with wide range especially for a subnotebook
dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2037.147.837.12537.144.937.13136.938.936.94035.935.835.95035.836.935.86343.735.843.78044.233.844.210053.233.853.212557.332.557.316063.331.163.320067.830.267.825073.330.273.331575.93075.940076.429.376.450078.228.778.263080.228.180.280078.528.278.5100076.328.276.3125077.928.277.9160080.12880.1200080.427.780.4250082.127.482.1315078.327.478.3400080.227.580.250007127.571630072.927.472.9800064.227.464.21000066.927.366.91250066.127.266.11600060.927.760.9SPL90.34090.3N89.43.789.4median 76.3median 28.1median 76.3Delta6.20.66.235.335.132.931.831.83236.535.132.428.93328.936.328.848.32761.52752.924.860.92462.822.763.32269.521.267.82174.82075.919.472.718.97117.770.117.86917.671.817.668.117.671.417.673.717.670.417.571.617.671.617.669.617.459.717.583.630.662.51.5median 69.6median 17.84.72.4hearing rangehide median Pink NoiseLenovo Yoga C940-14IIL 81Q9Apple MacBook 12 (Early 2016) 1.1 GHz
Frequency diagram (checkboxes can be checked and unchecked to compare devices)
Lenovo Yoga C940-14IIL 81Q9 audio analysis

(+) | speakers can play relatively loud (90.3 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 11.2% lower than median
(±) | linearity of bass is average (10.9% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 2.2% away from median
(+) | mids are linear (3.2% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | reduced highs - on average 6% lower than median
(±) | linearity of highs is average (8.9% delta to prev. frequency)
Overall 100 - 16.000 Hz
(+) | overall sound is linear (14.9% difference to median)
Compared to same class
» 19% of all tested devices in this class were better, 3% similar, 78% worse
» The best had a delta of 6%, average was 21%, worst was 57%
Compared to all devices tested
» 16% of all tested devices were better, 4% similar, 80% worse
» The best had a delta of 4%, average was 25%, worst was 134%

Apple MacBook 12 (Early 2016) 1.1 GHz audio analysis

(+) | speakers can play relatively loud (83.6 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 11.3% lower than median
(±) | linearity of bass is average (14.2% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 2.4% away from median
(+) | mids are linear (5.5% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2% away from median
(+) | highs are linear (4.5% delta to prev. frequency)
Overall 100 - 16.000 Hz
(+) | overall sound is linear (10.2% difference to median)
Compared to same class
» 5% of all tested devices in this class were better, 2% similar, 93% worse
» The best had a delta of 5%, average was 19%, worst was 53%
Compared to all devices tested
» 3% of all tested devices were better, 1% similar, 96% worse
» The best had a delta of 4%, average was 25%, worst was 134%

Energy Management

Power Consumption

Idling on desktop will demand between 5 W and 12 W compared to just 3 W and 9 W on the FHD option likely due to both the brighter display and higher native resolution of our 4K unit. Consumption is consistently higher during higher processing loads as well which will impact battery life as shown in our next section.

It's worth noting that power consumption when gaming on the Lenovo is about 16 percent less than the Huawei MateBook 14 with GeForce MX250 graphics while GPU performance is roughly 20 to 27 percent behind according to 3DMark benchmarks. In other words, performance-per-Watt is not necessarily greater on Intel's integrated chipset when compared to the more common discrete Nvidia and Intel solution especially since gaming performance is generally more inconsistent on the Ice Lake Iris platform.

We're able to measure a maximum consumption of 64.6 W from the small (~10.8 x 4.7 x 3 cm) 65 W AC adapter immediately after initiating Prime95 for 100 percent CPU utilization. This high of a consumption is sustainable for just a few seconds before falling to just 35 W after 5 full minutes of stress as shown by our graphs below. We wouldn't be observing declining power consumption over time had the laptop been able to maintain maximum Turbo Boost indefinitely.

Power consumption while running the first benchmark scene of 3DMark 06
Power consumption while running the first benchmark scene of 3DMark 06
Power Consumption while running Witcher 3
Power Consumption while running Witcher 3
Prime95 initiated at 10s mark. Note the initial spike up to 64.6 W and subsequent drops mirror our Prime95 and CineBench loop test observations above
Prime95 initiated at 10s mark. Note the initial spike up to 64.6 W and subsequent drops mirror our Prime95 and CineBench loop test observations above
Prime95+FurMark initiated at 10s mark. The fall after the initial consumption spike is steeper than Prime95 alone
Prime95+FurMark initiated at 10s mark. The fall after the initial consumption spike is steeper than Prime95 alone
Power Consumption
Off / Standbydarklight 0.37 / 0.37 Watt
Idledarkmidlight 5.6 / 10.5 / 12 Watt
Load midlight 53.3 / 64.6 Watt
 color bar
Key: min: dark, med: mid, max: light        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 C940-14IIL 81Q9
i7-1065G7, Iris Plus Graphics G7 (Ice Lake 64 EU), Samsung PM981a MZVLB1T0HBLR, IPS, 3840x2160, 14.00
Asus ZenBook S13 UX392FN
i7-8565U, GeForce MX150, WDC PC SN520 SDAPNUW-512G, IPS, 1920x1080, 13.90
Lenovo Yoga C930-13IKB 81C4
i5-8550U, UHD Graphics 620, SK hynix PC401 HFS256GD9TNG, IPS, 1920x1080, 13.90
Lenovo Yoga C940-14IIL
i7-1065G7, Iris Plus Graphics G7 (Ice Lake 64 EU), Samsung SSD PM981 MZVLB512HAJQ, IPS LED, 1920x1080, 14.00
Razer Blade Stealth 13, Core i7-1065G7
i7-1065G7, GeForce GTX 1650 Max-Q, Lite-On CA3-8D512, IPS LED, 3840x2160, 13.30
Dell XPS 13 7390 2-in-1 Core i7
i7-1065G7, Iris Plus Graphics G7 (Ice Lake 64 EU), Toshiba BG4 KBG40ZPZ512G, IPS, 1920x1200, 13.40
Huawei MateBook 14 KLV-W29
i7-8565U, GeForce MX250, Samsung SSD PM981 MZVLB512HAJQ, IPS, 2160x1440, 14.00
Power Consumption
19%
17%
23%
-35%
33%
1%
Idle Minimum *
5.6
3.4
39%
3.4
39%
3.2
43%
10.7
-91%
2.6
54%
3.7
34%
Idle Average *
10.5
6.3
40%
7.5
29%
7
33%
13.6
-30%
5.3
50%
9.3
11%
Idle Maximum *
12
10.4
13%
11.8
2%
8.9
26%
15.7
-31%
7
42%
12.8
-7%
Load Average *
53.3
51
4%
47.7
11%
47.6
11%
60
-13%
43.1
19%
58.8
-10%
Witcher 3 ultra *
46.9
39
17%
64
-36%
43.1
8%
55.8
-19%
Load Maximum *
64.6
62.7
3%
63.2
2%
63.1
2%
71
-10%
49
24%
65
-1%

* ... smaller is better

Battery Life

A battery deficit is expected when compared to the FHD SKU. Our 4K unit would shut down after approximately 7 hours of real-world WLAN use to be about 3 hours shorter than the FHD version. Both laptops were subjected to the same 150-nit brightness setting and Balanced power profile while looping various web pages at identical intervals. 

Charging from empty to full capacity takes about 2.5 hours to be slower than most Ultrabooks where 1.5 hours is more common. The included USB Type-C charger can also be used to charge smartphones, Switch consoles, and other compatible laptops.

Battery Runtime
WiFi Websurfing
7h 16min
Lenovo Yoga C940-14IIL 81Q9
i7-1065G7, Iris Plus Graphics G7 (Ice Lake 64 EU), 60 Wh
Asus ZenBook S13 UX392FN
i7-8565U, GeForce MX150, 50 Wh
Lenovo Yoga C930-13IKB 81C4
i5-8550U, UHD Graphics 620, 60 Wh
Lenovo Yoga C940-14IIL
i7-1065G7, Iris Plus Graphics G7 (Ice Lake 64 EU), 60 Wh
Razer Blade Stealth i7-1065G7 Iris Plus
i7-1065G7, Iris Plus Graphics G7 (Ice Lake 64 EU), 53.1 Wh
Dell XPS 13 7390 2-in-1 Core i7
i7-1065G7, Iris Plus Graphics G7 (Ice Lake 64 EU), 51 Wh
Battery Runtime
16%
52%
46%
34%
23%
WiFi v1.3
436
506
16%
664
52%
636
46%
583
34%
537
23%
Reader / Idle
1710
Load
99
64

Pros

+ good CPU and GPU performance for its category
+ strong audio quality for a subnotebook
+ long battery life despite the 4K screen
+ active pen with integrated garage
+ wider color gamut than FHD SKU
+ relatively bright 4K UHD display
+ rigid aluminum lid and base
+ webcam privacy shutter

Cons

- keyboard keys and clickpad could be firmer and less spongy
- display could be better calibrated out of the box
- CPU Turbo Boost sustainability could be better
- noticeably shorter battery life than FHD SKU
- inconsistent Ice Lake gaming performance
- no SD card reader or HDMI
- difficult serviceability

Verdict

In review: Lenovo Yoga C940-14IIL 81Q9. Test model provided by Lenovo
In review: Lenovo Yoga C940-14IIL 81Q9. Test model provided by Lenovo

Opting for the 4K UHD Yoga C940 instead of the less expensive FHD SKU will bring some advantages and disadvantages. The good news is that the higher native resolution allows for finer pen inputs, slightly deeper colors, and a measurably brighter backlight than the FHD SKU without impacting response times or contrast by very much. Colors and grayscale are curiously not as accurate out of the box, but an end-user calibration addresses this.

The main drawback of the 4K option is its shorter battery life by about 3 hours according to our measurements and slightly higher power consumption levels. Even so, 7 hours of real-world WLAN use should be more than enough for most users. All Yoga C940-14 SKUs share the same disadvantages when it comes to the difficult serviceability, pulsing fans when gaming, and highly variable gaming performance of Ice Lake.

The business-centric HP EliteBook x360 1040 series has more connectivity options, brighter displays, and slimmer designs for a higher starting price than the Lenovo Yoga C940-14. If you want a more balanced 14-inch consumer convertible without settling for the smaller 13.3-inch Spectre x360 or 13.4-inch Dell XPS 2-in-1, then the Yoga C940 should be on the top of your list.

Lenovo Yoga C940-14IIL 81Q9 - 12/19/2019 v7
Allen Ngo

Chassis
89 / 98 → 91%
Keyboard
83%
Pointing Device
90%
Connectivity
63 / 75 → 85%
Weight
71 / 20-75 → 92%
Battery
76%
Display
82%
Games Performance
61 / 78 → 78%
Application Performance
87 / 85 → 100%
Temperature
89%
Noise
95%
Audio
74 / 91 → 81%
Camera
48 / 85 → 56%
Average
78%
87%
Convertible - Weighted Average

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> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > Reviews > Lenovo Yoga C940-14IIL Review: The 14-inch Consumer Convertible to Beat
Allen Ngo, 2019-12-19 (Update: 2019-12-19)