Notebookcheck

Lenovo Chromebook S340-14T Review: This simple Chromebook has a low-reflection touchscreen

Affordable typewriter with internet access. Lenovo's 14-inch Chromebook has an IPS touchscreen display, silent operation, and a good battery life. Some sacrifices will have to be made in terms of RAM and storage size, though.
Sascha Mölck, 👁 Sebastian Jentsch (translated by Katherine Bodner),

The Lenovo Chromebook S340-14T is an affordable 14-inch Chromebook. The device is powered by a Celeron N4000 processor of the Gemini Lake generation. The HP Chromebook 14 G5 can be considered a direct competitor of the S340, but the Windows notebooks Medion Akoya E4253, Chuwi LapBook Pro and Acer Swift 1 SF114-32 are possible alternatives as well

Lenovo Chromebook S340-14T 81V30002GE (Chromebook S340 Series)
Processor
Intel Celeron N4000 2 x 1.1 - 2.6 GHz, Gemini Lake
Graphics adapter
Intel UHD Graphics 600, Core: 200-650 MHz
Memory
4096 MB 
, LPDDR4-2400
Display
14 inch 16:9, 1920 x 1080 pixel 157 PPI, capacitive, 10 touch points, IPS, glossy: no
Storage
64 GB eMMC Flash, 64 GB 
, 45 GB free
Connections
4 USB 3.0 / 3.1 Gen1, 2 DisplayPort, 1 Kensington Lock, Audio Connections: combined audio jack, Card Reader: MicroSD
Networking
Intel Wireless-AC 9560 (a/b/g/n = Wi-Fi 4/ac = Wi-Fi 5), Bluetooth 4.2
Size
height x width x depth (in mm): 18.8 x 328.9 x 234.35 ( = 0.74 x 12.95 x 9.23 in)
Battery
42 Wh, 3735 mAh Lithium-Ion, 11.25 V
Operating System
Google Chrome OS
Camera
Webcam: HD
Primary Camera: 0.9 MPix
Additional features
Speakers: Stereo, Keyboard: Chiclet, Keyboard Light: no, 24 Months Warranty, fanless
Weight
1.4 kg ( = 49.38 oz / 3.09 pounds), Power Supply: 316 g ( = 11.15 oz / 0.7 pounds)
Price
349 Euro
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
81 %
01/2020
Lenovo Chromebook S340-14T 81V30002GE
Celeron N4000, UHD Graphics 600
1.4 kg18.8 mm14"1920x1080
82 %
06/2019
HP Chromebook 14 G5
Celeron N3350, HD Graphics 500
1.5 kg18.3 mm14"1920x1080
80 %
08/2019
Medion Akoya E4253-30025387
Pentium N5000, UHD Graphics 605
1.4 kg15 mm14"1920x1080
79 %
08/2019
Chuwi LapBook Pro
Celeron N4100, UHD Graphics 600
1.4 kg13.4 mm14"1920x1080
85 %
05/2018
Acer Swift 1 SF114-32-P8GG
Pentium N5000, UHD Graphics 605
1.4 kg14.95 mm14"1920x1080

Case & Connectivity- Chromebook with USB Type-C

Lenovo has chosen a slim, dark wine-red plastic case (Dark Orchid) for its Chromebook. Only the display bezel is black. If you prefer an all-black case, you can go for the Onyx Black version instead. We did not notice any issues with workmanship but found that the base unit and lid could be a bit sturdier. The battery is not accessible without opening up the device - which requires removing the entire bottom cover with the help of a spatula (after unscrewing all the screws), as there's no maintenance hatch. 

Lenovo has given the S340 four USB 3.2 Gen 1 ports (2x Type-A, 2x Type-C). The two Type-C ports can be used to supply the device with power or as a video output (DisplayPort-via-USB-C, but this requires an adapter that is not included in the scope of delivery). There is no HDMI connector.

The microSD card reader is not particularly fast. It transferred 250 JPG images (each around 5 MB in size) at a speed of 47.4 MB/s. We tested the SD card using our reference card Toshiba Exceria Pro M501 microSDXC 64GB.

The Wi-Fi module is from Intel (Dual Band Wireless-AC 9560). It supports the Wi-Fi standards 802.11a/b/g/h/n as well as the fast ac standard.

Size Comparison

337 mm / 13.3 inch 226 mm / 8.9 inch 18.3 mm / 0.72 inch 1.5 kg3.4 lbs328.9 mm / 12.9 inch 234.35 mm / 9.23 inch 18.8 mm / 0.74 inch 1.4 kg3.09 lbs330 mm / 13 inch 219 mm / 8.62 inch 15 mm / 0.591 inch 1.4 kg3.09 lbs323 mm / 12.7 inch 228 mm / 8.98 inch 17.95 mm / 0.707 inch 1.6 kg3.53 lbs323 mm / 12.7 inch 228 mm / 8.98 inch 14.95 mm / 0.589 inch 1.4 kg3.09 lbs324.2 mm / 12.8 inch 209 mm / 8.23 inch 13.4 mm / 0.528 inch 1.4 kg3.15 lbs

Port Selection

Left: USB 3.2 Gen 1 (Type-C; DisplayPort, Power Delivery), USB 3.2 Gen 1 (Type-A), storage card reader (microSD), combined audio jack
Left: USB 3.2 Gen 1 (Type-C; DisplayPort, Power Delivery), USB 3.2 Gen 1 (Type-A), storage card reader (microSD), combined audio jack
Right: USB 3.2 Gen 1 (Type-A), USB 3.2 Gen 1 (Type-C; DisplayPort, Power Delivery), connector for cable lock
Right: USB 3.2 Gen 1 (Type-A), USB 3.2 Gen 1 (Type-C; DisplayPort, Power Delivery), connector for cable lock
SDCardreader Transfer Speed
average JPG Copy Test (av. of 3 runs)
Average of class Subnotebook
  (8 - 186, n=138)
63.9 MB/s ∼100% +35%
Lenovo Chromebook S340-14T 81V30002GE
  (Toshiba Exceria Pro M501 microSDXC 64GB)
47.4 MB/s ∼74%
Acer Swift 3 SF314-54-P2RK
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
26.1 MB/s ∼41% -45%
Acer Swift 1 SF114-32-P8GG
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
24.6 MB/s ∼38% -48%
maximum AS SSD Seq Read Test (1GB)
Average of class Subnotebook
  (17.7 - 251, n=140)
80.3 MB/s ∼100%
Acer Swift 1 SF114-32-P8GG
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
37.4 MB/s ∼47%
Medion Akoya E4253-30025387
  (Toshiba Exceria Pro M501 microSDXC 64GB)
33.9 MB/s ∼42%
Acer Swift 3 SF314-54-P2RK
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
28.8 MB/s ∼36%

Input Devices - no backlight for the S340

Lenovo has equipped the S340-14T with a chiclet keyboard without backlighting. The flat keys with a slightly rough finish have average travel and a clear pressure point. The keyboard gives way a little while typing, but this was not really a problem. Overall, this Lenovo keyboard is suitable for everyday use.

The ClickPad supports multi-touch gestures and is about 10.5 x 6.1 cm large. The smooth surface makes it easy for fingers to glide over it. The pad has short travel and a clear pressure point.

The touchpad supports up to 10 points of contact and responds quickly to inputs. We did not encounter any issues while using it.

Input devices
Input devices

Display - Lenovo computer with IPS touchscreen

The 14-inch touchscreen has a native resolution of 1920x1080 pixels. Its brightness (236.9 cd/m²) and contrast (800:1) are too low but are acceptable considering the device's price range. In general, we consider values above 300 cd/m² and 1000:1 to be good.

The screen is delivered with a decent color display and does not suffer from a blue cast. Its anti-glare finish works well and minimizes reflections effectively. Another advantage: We did not measure any PWM flickering.

Pixel array
Pixel array
CalMAN - grayscales
CalMAN - grayscales
244
cd/m²
251
cd/m²
238
cd/m²
236
cd/m²
248
cd/m²
231
cd/m²
228
cd/m²
243
cd/m²
213
cd/m²
Distribution of brightness
X-Rite i1Pro 2
Maximum: 251 cd/m² Average: 236.9 cd/m² Minimum: 12.4 cd/m²
Brightness Distribution: 85 %
Center on Battery: 248 cd/m²
Contrast: 800:1 (Black: 0.31 cd/m²)
ΔE Greyscale 3.58 | 0.64-98 Ø6
Gamma: 2.17
Lenovo Chromebook S340-14T 81V30002GE
IPS, 1920x1080, 14
HP Chromebook 14 G5
IPS, 1920x1080, 14
Medion Akoya E4253-30025387
IPS, 1920x1080, 14
Chuwi LapBook Pro
IPS, 1920x1080, 14
Acer Swift 1 SF114-32-P8GG
IPS, 1920x1080, 14
Response Times
-5%
10%
8%
10%
Response Time Grey 50% / Grey 80% *
46 (20, 26)
44 (23, 21)
4%
42 (23, 19)
9%
42 (21, 21)
9%
42 (22, 20)
9%
Response Time Black / White *
31 (17, 14)
35 (20, 15)
-13%
28 (16, 12)
10%
29 (15, 14)
6%
28 (16, 12)
10%
PWM Frequency
1000 (90)
24500 (20)
200 (90)
Screen
30%
-21%
-35%
25%
Brightness middle
248
253
2%
262
6%
297
20%
250
1%
Brightness
237
232
-2%
242
2%
268
13%
240
1%
Brightness Distribution
85
87
2%
87
2%
77
-9%
81
-5%
Black Level *
0.31
0.15
52%
0.505
-63%
0.625
-102%
0.13
58%
Contrast
800
1687
111%
519
-35%
475
-41%
1923
140%
Greyscale DeltaE2000 *
3.58
3.04
15%
4.84
-35%
6.72
-88%
5.2
-45%
Gamma
2.17 101%
2.21 100%
2.3 96%
2.38 92%
2.29 96%
CCT
6697 97%
7015 93%
6347 102%
7015 93%
5796 112%
Colorchecker DeltaE2000 *
5.49
5.23
5.54
Colorchecker DeltaE2000 max. *
10.63
9.53
10.5
Color Space (Percent of AdobeRGB 1998)
39
63
36
Color Space (Percent of sRGB)
61
96
56
Total Average (Program / Settings)
13% / 21%
-6% / -13%
-14% / -24%
18% / 21%

* ... smaller is better

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
31 ms ... rise ↗ and fall ↘ combined↗ 17 ms rise
↘ 14 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers.
In comparison, all tested devices range from 0.8 (minimum) to 240 (maximum) ms. » 79 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (24.6 ms).
       Response Time 50% Grey to 80% Grey
46 ms ... rise ↗ and fall ↘ combined↗ 20 ms rise
↘ 26 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers.
In comparison, all tested devices range from 0.9 (minimum) to 636 (maximum) ms. » 71 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (39 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: 51 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 17901 (minimum: 5 - maximum: 2500000) Hz was measured.

Lenovo has equipped the Chromebook with an IPS panel with stable viewing angles. This makes the screen readable from every position. Unfortunately, it is very difficult or often even impossible to read the screen outdoors - particularly in bright sunlight.

The Chromebook outdoors
The Chromebook outdoors
The Chromebook outdoors
The Chromebook outdoors

Performance - enough for Office and the internet

Lenovo has created a 14-inch Chrome OS notebook with sufficient performance for simple applications such as word-processing and browsing the web. Our test unit is available for around $350 with other options available. Models without a touchscreen are available from around $250.

Processor

The Chromebook S340 has a Celeron N4000 (Gemini Lake) two-core processor. Thanks to its low TDP of 6 watt, the SoC can be cooled passively. The CPU clocks at a base rate of 1.1 GHz, which can be increased to up to 2.5 GHz (two cores) or 2.6 GHz (one core) via the turbo. 

Geekbench 5.1 / 5.2
64 Bit Multi-Core Score
Average of class Subnotebook
  (591 - 4855, n=40)
2973 Points ∼24% +269%
Lenovo Chromebook S340-14T 81V30002GE
Intel Celeron N4000
806 Points ∼7%
Average Intel Celeron N4000
  (797 - 806, n=2)
802 Points ∼6% 0%
64 Bit Single-Core Score
Average of class Subnotebook
  (310 - 1324, n=40)
946 Points ∼65% +119%
Average Intel Celeron N4000
  (431 - 436, n=2)
434 Points ∼30% +1%
Lenovo Chromebook S340-14T 81V30002GE
Intel Celeron N4000
431 Points ∼30%
Sunspider - 1.0 Total Score
HP Chromebook 14 G5
Intel Celeron N3350 (Chrome OS 74.0.3729.159)
627.6 ms * ∼7% -41%
Average Intel Celeron N4000
 
447 ms * ∼5% -0%
Lenovo Chromebook S340-14T 81V30002GE
Intel Celeron N4000 (Chrome 79.0.3945.86)
446.5 ms * ∼5%
Acer Swift 1 SF114-32-P8GG
Intel Pentium Silver N5000 (Edge 42)
194.6 ms * ∼2% +56%
Average of class Subnotebook
  (65.2 - 747, n=111)
178 ms * ∼2% +60%
Acer Swift 3 SF314-54-P2RK
Intel Pentium Gold 4417U (Edge 44)
165.1 ms * ∼2% +63%
Mozilla Kraken 1.1 - Total Score
HP Chromebook 14 G5
Intel Celeron N3350 (Chrome OS 74.0.3729.159)
3201.4 ms * ∼5% -39%
Chuwi LapBook Pro
Intel Celeron N4100 (Edge 44)
3192.7 ms * ∼5% -38%
Medion Akoya E4253-30025387
Intel Pentium Silver N5000 (Edge 44)
2868.4 ms * ∼5% -24%
Acer Swift 1 SF114-32-P8GG
Intel Pentium Silver N5000 (Edge 42)
2796.6 ms * ∼5% -21%
Average Intel Celeron N4000
  (2306 - 2457, n=2)
2382 ms * ∼4% -3%
Lenovo Chromebook S340-14T 81V30002GE
Intel Celeron N4000 (Chrome 79.0.3945.86)
2306.2 ms * ∼4%
Acer Swift 3 SF314-54-P2RK
Intel Pentium Gold 4417U (Edge 44)
2161.7 ms * ∼4% +6%
Average of class Subnotebook
  (740 - 30250, n=202)
1836 ms * ∼3% +20%
Octane V2 - Total Score
Average of class Subnotebook
  (3963 - 50464, n=176)
26586 Points ∼51% +70%
Acer Swift 3 SF314-54-P2RK
Intel Pentium Gold 4417U (Edge 44)
16702 Points ∼32% +7%
Lenovo Chromebook S340-14T 81V30002GE
Intel Celeron N4000 (Chrome 79.0.3945.86)
15679 Points ∼30%
Average Intel Celeron N4000
 
15679 Points ∼30% 0%
Medion Akoya E4253-30025387
Intel Pentium Silver N5000 (Edge 44)
14601 Points ∼28% -7%
Acer Swift 1 SF114-32-P8GG
Intel Pentium Silver N5000 (Edge 42)
13075 Points ∼25% -17%
Chuwi LapBook Pro
Intel Celeron N4100 (Edge 44)
11852 Points ∼23% -24%
HP Chromebook 14 G5
Intel Celeron N3350 (Chrome OS 74.0.3729.159)
11461 Points ∼22% -27%
Speedometer 2.0 - Result
Average of class Subnotebook
  (12.6 - 130, n=20)
68.9 runs/min ∼44% +49%
Lenovo Chromebook S340-14T 81V30002GE
Intel Celeron N4000 (Chrome 79.0.3945.86)
46.21 runs/min ∼29%
Average Intel Celeron N4000
 
46.2 runs/min ∼29% 0%
HP Chromebook 14 G5
Intel Celeron N3350 (Chrome OS 74.0.3729.159)
26.27 runs/min ∼17% -43%
Acer Swift 3 SF314-54-P2RK
Intel Pentium Gold 4417U (Edge 44)
26 runs/min ∼16% -44%
WebXPRT 3 - ---
Average of class Subnotebook
  (49.2 - 224, n=39)
147 Points ∼55% +71%
Acer Swift 3 SF314-54-P2RK
Intel Pentium Gold 4417U (Edge 44)
102 Points ∼38% +19%
Lenovo Chromebook S340-14T 81V30002GE
Intel Celeron N4000 (Chrome 79.0.3945.86)
86 Points ∼32%
Average Intel Celeron N4000
  (71.2 - 86, n=2)
78.6 Points ∼30% -9%
HP Chromebook 14 G5
Intel Celeron N3350 (Chrome OS 74.0.3729.159)
68 Points ∼26% -21%
JetStream 1.1 - Total Score
Average of class Subnotebook
  (34.8 - 297, n=164)
191 Points ∼54% +134%
Acer Swift 3 SF314-54-P2RK
Intel Pentium Gold 4417U (Edge 44)
124.67 Points ∼35% +53%
Acer Swift 1 SF114-32-P8GG
Intel Pentium Silver N5000 (Edge 42)
107.97 Points ∼31% +32%
Medion Akoya E4253-30025387
Intel Pentium Silver N5000 (Edge 44)
105.07 Points ∼30% +29%
Chuwi LapBook Pro
Intel Celeron N4100 (Edge 44)
91.243 Points ∼26% +12%
Average Intel Celeron N4000
  (81.6 - 88.1, n=2)
84.9 Points ∼24% +4%
Lenovo Chromebook S340-14T 81V30002GE
Intel Celeron N4000 (Chrome 79.0.3945.86)
81.649 Points ∼23%
HP Chromebook 14 G5
Intel Celeron N3350 (Chrome OS 74.0.3729.159)
60.236 Points ∼17% -26%

* ... smaller is better

System Performance

The system runs smoothly and without any issues. The processor provides sufficient computing power for simple applications such as word-processing and browsing. The operating system loads quickly and applications open swiftly as well.

PCMark for Android
Computer Vision score
Lenovo Chromebook S340-14T 81V30002GE
UHD Graphics 600, Celeron N4000, 64 GB eMMC Flash
6152 Points ∼27%
Average Intel Celeron N4000, Intel UHD Graphics 600
 
6152 Points ∼27% 0%
Average of class Subnotebook
 
6152 Points ∼27% 0%
HP Chromebook 14 G5
HD Graphics 500, Celeron N3350, 32 GB eMMC Flash
3574 Points ∼15% -42%
Storage score
Lenovo Chromebook S340-14T 81V30002GE
UHD Graphics 600, Celeron N4000, 64 GB eMMC Flash
22786 Points ∼69%
Average Intel Celeron N4000, Intel UHD Graphics 600
 
22786 Points ∼69% 0%
Average of class Subnotebook
 
22786 Points ∼69% 0%
HP Chromebook 14 G5
HD Graphics 500, Celeron N3350, 32 GB eMMC Flash
7138 Points ∼22% -69%
Work 2.0 performance score
Lenovo Chromebook S340-14T 81V30002GE
UHD Graphics 600, Celeron N4000, 64 GB eMMC Flash
7604 Points ∼58%
Average Intel Celeron N4000, Intel UHD Graphics 600
 
7604 Points ∼58% 0%
Average of class Subnotebook
  (5998 - 7616, n=3)
7073 Points ∼54% -7%
HP Chromebook 14 G5
HD Graphics 500, Celeron N3350, 32 GB eMMC Flash
5377 Points ∼41% -29%
Work performance score
Lenovo Chromebook S340-14T 81V30002GE
UHD Graphics 600, Celeron N4000, 64 GB eMMC Flash
10205 Points ∼52%
Average Intel Celeron N4000, Intel UHD Graphics 600
 
10205 Points ∼52% 0%
HP Chromebook 14 G5
HD Graphics 500, Celeron N3350, 32 GB eMMC Flash
7007 Points ∼36% -31%
Average of class Subnotebook
  (242 - 10205, n=2)
5224 Points ∼27% -49%

Storage Device

The device is equipped with an eMMC storage device that has a capacity of 64 GB. The storage capacity can be expanded via microSD card.

GPU Performance

Intel's integrated UHD Graphics 600 is responsible for displaying graphics in the Lenovo Chromebook S340. It clocks at up to 650 MHz. The decoder that is integrated into this GPU takes load off the processor when displaying videos in the usual formats such as H.264 and HEVC/H.265.

3DMark
2560x1440 Sling Shot OpenGL ES 3.0 Unlimited Graphics
Lenovo Chromebook S340-14T 81V30002GE
Intel UHD Graphics 600, Intel Celeron N4000
2776 Points ∼100%
Average Intel UHD Graphics 600
 
2776 Points ∼100% 0%
Average of class Subnotebook
 
2776 Points ∼100% 0%
2560x1440 Sling Shot OpenGL ES 3.0 Graphics
HP Chromebook 14 G5
Intel HD Graphics 500, Intel Celeron N3350
2516 Points ∼100% +5%
Lenovo Chromebook S340-14T 81V30002GE
Intel UHD Graphics 600, Intel Celeron N4000
2407 Points ∼96%
Average Intel UHD Graphics 600
 
2407 Points ∼96% 0%
Average of class Subnotebook
 
2407 Points ∼96% 0%
GFXBench
Aztec Ruins High Tier Onscreen
Average of class Subnotebook
  (6.1 - 48.3, n=9)
22.9 fps ∼100% +247%
Lenovo Chromebook S340-14T 81V30002GE
Intel UHD Graphics 600, Intel Celeron N4000
6.6 fps ∼29%
Average Intel UHD Graphics 600
  (6.1 - 6.6, n=2)
6.35 fps ∼28% -4%
HP Chromebook 14 G5
Intel HD Graphics 500, Intel Celeron N3350
6.3 fps ∼28% -5%
2560x1440 Aztec Ruins High Tier Offscreen
Average of class Subnotebook
  (3.4 - 28.8, n=10)
13.1 fps ∼100% +254%
Lenovo Chromebook S340-14T 81V30002GE
Intel UHD Graphics 600, Intel Celeron N4000
3.7 fps ∼28%
HP Chromebook 14 G5
Intel HD Graphics 500, Intel Celeron N3350
3.6 fps ∼27% -3%
Average Intel UHD Graphics 600
  (3.4 - 3.7, n=3)
3.6 fps ∼27% -3%
Aztec Ruins Normal Tier Onscreen
Average of class Subnotebook
  (8.7 - 59.8, n=9)
31.2 fps ∼100% +212%
HP Chromebook 14 G5
Intel HD Graphics 500, Intel Celeron N3350
10 fps ∼32% 0%
Lenovo Chromebook S340-14T 81V30002GE
Intel UHD Graphics 600, Intel Celeron N4000
10 fps ∼32%
Average Intel UHD Graphics 600
  (8.7 - 10, n=2)
9.35 fps ∼30% -6%
1920x1080 Aztec Ruins Normal Tier Offscreen
Average of class Subnotebook
  (9 - 74.6, n=10)
33.2 fps ∼100% +232%
Lenovo Chromebook S340-14T 81V30002GE
Intel UHD Graphics 600, Intel Celeron N4000
10 fps ∼30%
HP Chromebook 14 G5
Intel HD Graphics 500, Intel Celeron N3350
9.7 fps ∼29% -3%
Average Intel UHD Graphics 600
  (9 - 10, n=3)
9.6 fps ∼29% -4%
off screen Car Chase Offscreen
Average of class Subnotebook
  (5.4 - 62, n=15)
29.1 fps ∼100% +238%
Acer Swift 1 SF114-32-P8GG
Intel UHD Graphics 605, Intel Pentium Silver N5000
11.3 fps ∼39% +31%
Lenovo Chromebook S340-14T 81V30002GE
Intel UHD Graphics 600, Intel Celeron N4000
8.6 fps ∼30%
HP Chromebook 14 G5
Intel HD Graphics 500, Intel Celeron N3350
8.4 fps ∼29% -2%
Average Intel UHD Graphics 600
  (5.4 - 8.6, n=3)
7.17 fps ∼25% -17%
on screen Car Chase Onscreen
Average of class Subnotebook
  (7.9 - 56.6, n=15)
29.9 fps ∼100% +236%
Acer Swift 1 SF114-32-P8GG
Intel UHD Graphics 605, Intel Pentium Silver N5000
11.2 fps ∼37% +26%
Average Intel UHD Graphics 600
  (7.9 - 12, n=3)
9.6 fps ∼32% +8%
Lenovo Chromebook S340-14T 81V30002GE
Intel UHD Graphics 600, Intel Celeron N4000
8.9 fps ∼30%
HP Chromebook 14 G5
Intel HD Graphics 500, Intel Celeron N3350
8.8 fps ∼29% -1%
GFXBench (DX / GLBenchmark) 2.7
1920x1080 T-Rex HD Offscreen C24Z16
Average of class Subnotebook
  (33.3 - 235, n=25)
113 fps ∼100% +176%
Acer Swift 1 SF114-32-P8GG
Intel UHD Graphics 605, Intel Pentium Silver N5000
45.5 fps ∼40% +11%
HP Chromebook 14 G5
Intel HD Graphics 500, Intel Celeron N3350
42 fps ∼37% +2%
Lenovo Chromebook S340-14T 81V30002GE
Intel UHD Graphics 600, Intel Celeron N4000
41 fps ∼36%
Average Intel UHD Graphics 600
  (33.3 - 41, n=2)
37.2 fps ∼33% -9%
T-Rex HD Onscreen C24Z16
Average of class Subnotebook
  (24.8 - 210, n=22)
74.5 fps ∼100% +140%
Acer Swift 1 SF114-32-P8GG
Intel UHD Graphics 605, Intel Pentium Silver N5000
42.9 fps ∼58% +38%
HP Chromebook 14 G5
Intel HD Graphics 500, Intel Celeron N3350
37 fps ∼50% +19%
Lenovo Chromebook S340-14T 81V30002GE
Intel UHD Graphics 600, Intel Celeron N4000
31 fps ∼42%
Average Intel UHD Graphics 600
  (24.8 - 31, n=2)
27.9 fps ∼37% -10%
GFXBench 3.0
off screen Manhattan Offscreen OGL
Average of class Subnotebook
  (18.2 - 200, n=22)
58.6 fps ∼100% +179%
Acer Swift 1 SF114-32-P8GG
Intel UHD Graphics 605, Intel Pentium Silver N5000
22.1 fps ∼38% +5%
Lenovo Chromebook S340-14T 81V30002GE
Intel UHD Graphics 600, Intel Celeron N4000
21 fps ∼36%
HP Chromebook 14 G5
Intel HD Graphics 500, Intel Celeron N3350
20 fps ∼34% -5%
Average Intel UHD Graphics 600
  (18.2 - 21, n=2)
19.6 fps ∼33% -7%
on screen Manhattan Onscreen OGL
Average of class Subnotebook
  (10.3 - 113, n=20)
38 fps ∼100% +111%
HP Chromebook 14 G5
Intel HD Graphics 500, Intel Celeron N3350
20 fps ∼53% +11%
Acer Swift 1 SF114-32-P8GG
Intel UHD Graphics 605, Intel Pentium Silver N5000
19.9 fps ∼52% +11%
Lenovo Chromebook S340-14T 81V30002GE
Intel UHD Graphics 600, Intel Celeron N4000
18 fps ∼47%
Average Intel UHD Graphics 600
  (10.3 - 18, n=2)
14.2 fps ∼37% -21%
GFXBench 3.1
off screen Manhattan ES 3.1 Offscreen
Average of class Subnotebook
  (13.4 - 92.1, n=15)
42.5 fps ∼100% +183%
Acer Swift 1 SF114-32-P8GG
Intel UHD Graphics 605, Intel Pentium Silver N5000
16.5 fps ∼39% +10%
HP Chromebook 14 G5
Intel HD Graphics 500, Intel Celeron N3350
15 fps ∼35% 0%
Lenovo Chromebook S340-14T 81V30002GE
Intel UHD Graphics 600, Intel Celeron N4000
15 fps ∼35%
Average Intel UHD Graphics 600
  (13.4 - 15, n=2)
14.2 fps ∼33% -5%
on screen Manhattan ES 3.1 Onscreen
Average of class Subnotebook
  (7.8 - 83.6, n=14)
37 fps ∼100% +147%
Acer Swift 1 SF114-32-P8GG
Intel UHD Graphics 605, Intel Pentium Silver N5000
15.2 fps ∼41% +1%
HP Chromebook 14 G5
Intel HD Graphics 500, Intel Celeron N3350
15 fps ∼41% 0%
Lenovo Chromebook S340-14T 81V30002GE
Intel UHD Graphics 600, Intel Celeron N4000
15 fps ∼41%
Average Intel UHD Graphics 600
  (7.8 - 15, n=2)
11.4 fps ∼31% -24%

Emissions & Energy - The Lenovo S340 is silent

System Noise

The Chromebook has passive cooling and does not have a mechanical drive, which means that it is absolutely silent.

Temperature

The Lenovo Chromebook never becomes particularly hot. We measured temperatures in the mid and high 30s (°C) in some areas under load. The temperatures while idling are all absolutely fine. We run Google's Octane V2 benchmark and the Jetstream benchmark in a loop to put Chromebooks under load.

Max. Load
 38.3 °C
101 F
36 °C
97 F
26.1 °C
79 F
 
 34.7 °C
94 F
34 °C
93 F
25.1 °C
77 F
 
 24 °C
75 F
23.2 °C
74 F
22.3 °C
72 F
 
Maximum: 38.3 °C = 101 F
Average: 29.3 °C = 85 F
24.3 °C
76 F
34.7 °C
94 F
36.3 °C
97 F
25.2 °C
77 F
34.5 °C
94 F
35 °C
95 F
21.9 °C
71 F
26 °C
79 F
26.2 °C
79 F
Maximum: 36.3 °C = 97 F
Average: 29.3 °C = 85 F
Power Supply (max.)  33.6 °C = 92 F | Room Temperature 20.4 °C = 69 F | FIRT 550-Pocket
(+) The average temperature for the upper side under maximal load is 29.3 °C / 85 F, compared to the average of 30.7 °C / 87 F for the devices in the class Subnotebook.
(+) The maximum temperature on the upper side is 38.3 °C / 101 F, compared to the average of 35.7 °C / 96 F, ranging from 22 to 57 °C for the class Subnotebook.
(+) The bottom heats up to a maximum of 36.3 °C / 97 F, compared to the average of 39.7 °C / 103 F
(+) In idle usage, the average temperature for the upper side is 22.8 °C / 73 F, compared to the device average of 30.7 °C / 87 F.
(+) The palmrests and touchpad are cooler than skin temperature with a maximum of 24 °C / 75.2 F and are therefore cool to the touch.
(+) The average temperature of the palmrest area of similar devices was 28.5 °C / 83.3 F (+4.5 °C / 8.1 F).
Heat development top (load)
Heat development top (load)
Heat development bottom (load)
Heat development bottom (load)
Heat development top (idle)
Heat development top (idle)
Heat development bottom (idle)
Heat development bottom (idle)

Speakers

The stereo speakers are positioned on the bottom of the base unit, towards the front. They produce a decent sound that lacks bass. We recommend using headphones or external speakers for a better audio experience.

dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2031.134.331.12532.934.132.93138.13638.1403233.8325033.432.233.46329.33129.38029.628.229.610030.829.330.812529.129.329.116026.124.326.120027.622.427.625041.922.441.931550.421.250.440058.920.458.950059.819.559.86306118.76180073.318.373.310007317.773125068.617.768.6160065.817.165.8200066.317.466.3250060.517.460.5315063.617.663.6400061.717.761.7500065.81865.8630065.21865.2800063.818.363.81000066.118.166.11250064.818.264.8160006218.262SPL7930.479N42.31.442.3median 62median 18.2median 62Delta8.82.38.8hearing rangehide median Pink NoiseLenovo Chromebook S340-14T 81V30002GE
Frequency diagram (checkboxes can be checked and unchecked to compare devices)
Lenovo Chromebook S340-14T 81V30002GE audio analysis

(±) | speaker loudness is average but good (73.25 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 27.6% lower than median
(±) | linearity of bass is average (11.4% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 5.4% higher than median
(±) | linearity of mids is average (8.8% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2.3% away from median
(+) | highs are linear (6.2% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (22.7% difference to median)
Compared to same class
» 71% of all tested devices in this class were better, 5% similar, 24% worse
» The best had a delta of 8%, average was 20%, worst was 50%
Compared to all devices tested
» 60% of all tested devices were better, 8% similar, 32% worse
» The best had a delta of 3%, average was 21%, worst was 65%

Power Consumption

We measured a maximum power consumption of 10.4 watt while idling. This is unusually high for a device of this performance category. The consumption increases to about 19.6 watt max under load. The rated output of the USB Type-C AC adapter is 45 watt.

Power Consumption
Off / Standbydarklight 0.45 / 0.38 Watt
Idledarkmidlight 2.4 / 6.4 / 10.4 Watt
Load midlight 8.6 / 15.7 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy

Battery Life

Our practical Wi-Fi test simulates the load of browsing the web with the help of a script. The display brightness is set to around 150 c/m². In this scenario, our Lenovo notebook managed a runtime of 8:32 hours.

Battery Runtime
NBC WiFi Websurfing Battery Test 1.3 (Chrome 79.0.3945.86)
8h 32min
Battery Runtime - WiFi Websurfing 1.3
Acer Swift 1 SF114-32-P8GG
Pentium N5000, UHD Graphics 605, 53.9 Wh (Edge 41)
740 min ∼28% +45%
HP Chromebook 14 G5
Celeron N3350, HD Graphics 500, 47.36 Wh (Chrome OS 74.0.3729.159)
661 min ∼25% +29%
Acer Swift 3 SF314-54-P2RK
Pentium 4417U, HD Graphics 610, 48 Wh (Edge 44)
570 min ∼22% +11%
Medion Akoya E4253-30025387
Pentium N5000, UHD Graphics 605, 41 Wh (Edge 44)
555 min ∼21% +8%
Lenovo Chromebook S340-14T 81V30002GE
Celeron N4000, UHD Graphics 600, 42 Wh (Chrome 79.0.3945.86)
512 min ∼19%
Average of class Subnotebook
  (206 - 991, n=262)
493 min ∼19% -4%
Chuwi LapBook Pro
Celeron N4100, UHD Graphics 600, 38 Wh (Edge 44)
491 min ∼19% -4%

Pros

+ IPS display
+ Full HD resolution
+ good battery life
+ DisplayPort via USB-C
+ Power Delivery

Cons

- dark, low-contrast display
- meager storage capacity
- only 4 GB of RAM
- no SSD
- only one microSD card reader

Verdict

The Lenovo Chromebook S340-14T (81V30002GE), provided by Lenovo Germany.
The Lenovo Chromebook S340-14T (81V30002GE), provided by Lenovo Germany.

Lenovo's Chromebook S340-14T is a simple 14-inch notebook with an unusually colored case. It is called Dark Orchid and is a dark wine red. Alternatively, the device is also available in black (Onyx Black).

The Celeron N4000 two-core processor offers sufficient computing power for simple Office and internet applications. The decoder that is integrated into the GPU takes load off the processor when displaying videos. This means that users can use streaming services on the device. Thanks to its passive cooling, the Chromebook operates silently - and still hardly heats up.

Lenovo has created a tenacious typewriter and browser - the Chromebook S340-14T. 

The RAM is comparatively small at 4 GB (soldered on); still, this should be sufficient for a Chromebook of this performance category. The total storage capacity of 64 GB is quite meager. Storage could be expanded by inserting a microSD card.

The Chromebook has two USB Type-C ports that can be used to supply the device with power. Both ports also support DisplayPort-via-USB-C. The keyboard (no backlighting) is suitable for everyday use and the battery life is very good.

The IPS Full HD touchscreen has stable viewing angles and very limited reflections thanks to a good anti-glare finish. The brightness and contrast are too low, but this is okay considering the device's price. The touchscreen does make this 14-inch device more expensive, so if you can do without it, you can get this Chromebook for less money.

Lenovo Chromebook S340-14T 81V30002GE - 01/24/2020 v7
Sascha Mölck

Chassis
72 / 98 → 73%
Keyboard
75%
Pointing Device
87%
Connectivity
53 / 75 → 70%
Weight
70 / 20-75 → 91%
Battery
83%
Display
81%
Games Performance
13 / 78 → 17%
Application Performance
65 / 85 → 77%
Temperature
95%
Noise
100%
Audio
60 / 91 → 66%
Camera
22 / 85 → 26%
Average
67%
81%
Subnotebook - Weighted Average

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> Notebook / Laptop Reviews and News > Reviews > Lenovo Chromebook S340-14T Review: This simple Chromebook has a low-reflection touchscreen
Sascha Mölck, 2020-01-25 (Update: 2020-01-26)
Sascha Mölck
Editor of the original article: Sascha Mölck - Editor
Studied computer science, working as an author in the IT sector for over 15 years.