Notebookcheck

Chuwi LapBook 12.3 (Celeron, 2K IPS) Laptop Review

How much notebook do you need? The affordable Chuwi LapBook 12.3 is designed for everyday tasks. The metal chassis, the high-resolution display, as well as the silent operation are advantages of the laptop.

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Year after year, laptops are getting faster and high-end Ultrabooks impress us with slim cases, high-resolution displays, and powerful components. If you are only looking for a laptop for everyday tasks like web-browsing, mails, or video-streaming, however, you do not have to pay that much. There are plenty of devices for up to 500 Euros (~$589), but you will soon notice that there are always drawbacks, like a boring plastic case or a bad TN display.

This is where the Chinese manufacturer Chuwi wants to score with its LapBook 12.3. The specs look promising, because for about 350 Euros (~$412; current street price ~300 Euros, ~$353) you get a high-quality metal case, an entry-level quad-core processor from Intel, 6 GB RAM, and 64 GB eMMC storage. The highlight is certainly the high-resolution and matte 12.3-inch panel (3:2), which is already familiar from the Microsoft Surface Pro 4.

The list of rivals include the Acer Aspire 1Acer Switch 3Jumper EZBook 3Acer Swift 1, as well as the Lenovo E31-80.

Chuwi Lapbook 12.3 (LapBook Series)
Graphics adapter
Memory
6144 MB 
, DDR3, soldered
Display
12.3 inch 3:2, 2736 x 1824 pixel 267 PPI, SDC8353, IPS, glossy: yes
Mainboard
Apollo Lake
Storage
64 GB eMMC Flash, 64 GB 
, 38 GB free
Soundcard
RealTek ALC269 @ Intel Apollo Lake SoC - High Definition Audio Controller
Connections
1 USB 2.0, 1 USB 3.0 / 3.1 Gen1, 1 HDMI, Audio Connections: 3.5mm, Card Reader: microSD, Sensors: G-sensor
Networking
Intel Dual Band Wireless-AC 3165 (a/b/g/n/ac), Bluetooth 4.2
Size
height x width x depth (in mm): 17.5 x 299 x 222 ( = 0.69 x 11.77 x 8.74 in)
Battery
36.48 Wh Lithium-Polymer, Battery runtime (according to manufacturer): 5 h
Operating System
Microsoft Windows 10 Home 64 Bit
Camera
Webcam: 0.3 MP
Additional features
Speakers: Stereo, Keyboard: Chiclet, Keyboard Light: no, 24 W power adapter, 12 Months Warranty
Weight
1.4 kg ( = 49.38 oz / 3.09 pounds), Power Supply: 182 g ( = 6.42 oz / 0.4 pounds)
Price
350 Euro
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

Case & Connectivity

The first contact with the metal chassis of the LapBook 12.3 is already very positive. The front of the base unit is slightly rounded, so the device appears slimmer than it actually is. The whole base unit is very sturdy and you can only dent the central area a bit with a lot of pressure, but this is not important in practice. This applies for the lid as well, and we were not able to provoke picture distortions. The LapBook 12.3 can easily keep up with much more expensive devices in this respect.

The weakness of the case is definitely the black central hinge, which appears to be made out of plastic. An opening angle of ~135 degrees is sufficient, but there is some creaking when you adjust the angle, and the hinge could also be a bit firmer since there is some bouncing.

The maintenance hatch at the bottom is another advantage. It covers the M.2-2242 slot, which can be used to expand the integrated eMMC storage of the LapBook 12.3 with a corresponding SSD. All in all, the case is almost a small sensation in this price range.

Size Comparison

Ports

The port selection covers the basics. Besides two USB ports (1x 3.0 & 1x 2.0) you also get a microSD-reader, a 3.5 mm stereo jack, and finally a mini-HDMI output. We should mention that the USB ports are implemented the wrong way (upside-down), but this should not be an issue for regular USB thumb drives or cables.

Right side: microSD-reader, headphones, USB 2.0, power
Right side: microSD-reader, headphones, USB 2.0, power
Left side: power with status LED, USB 3.0, mini-HDMI, microphone
Left side: power with status LED, USB 3.0, mini-HDMI, microphone

The microSD-card reader is located at the right side. As expected, it is only attached via USB 2.0 and does not manage high transfer rates. We determined up to ~37 MB/s in combination with our reference card from Toshiba (Exceria Pro M501), but the rivals are not much better, either.

SDCardreader Transfer Speed
average JPG Copy Test (av. of 3 runs)
Lenovo E31-80 80MX0107GE
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
26 MB/s ∼100% +12%
Acer Swift 1 SF113-31-P2CP
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
24 MB/s ∼92% +3%
Chuwi Lapbook 12.3
  (Toshiba Exceria Pro M501)
23.3 MB/s ∼90%
Jumper EZbook 3
 
19.3 MB/s ∼74% -17%
maximum AS SSD Seq Read Test (1GB)
Chuwi Lapbook 12.3
  (Toshiba Exceria Pro M501)
37.2 MB/s ∼100%
Acer Swift 1 SF113-31-P2CP
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
36.4 MB/s ∼98% -2%
Jumper EZbook 3
  (Toshiba Exceria Pro M401 64 GB)
27.4 MB/s ∼74% -26%
Lenovo E31-80 80MX0107GE
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
25.2 MB/s ∼68% -32%

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Internet connections are handled by the Wireless-AC 3165 dual-band module from Intel. It supports all important standards, including Bluetooth 4.2, and it also works with 5 GHz networks. However, it is only a 1x1 adapter with a theoretical transfer rate of up to 433 Mbps, so the results in the WLAN test fall behind the rivals, but the results are still okay. We did not experience any connectivity issues, either.

Networking
iperf3 Client (receive) TCP 1 m 4M x10
Acer Switch 3 SW312-31-P5VG
Intel Dual Band Wireless-AC 7265
560 MBit/s ∼100% +77%
Acer Swift 1 SF113-31-P2CP
Intel Dual Band Wireless-AC 7265
543 MBit/s ∼97% +72%
Acer Aspire 1 A114-31-C472
Qualcomm Atheros QCA9377 Wireless Network Adapter
340 MBit/s ∼61% +8%
Chuwi Lapbook 12.3
Intel Dual Band Wireless-AC 3165
316 MBit/s ∼56%
Jumper EZbook 3
Realtek RTL8723B USB 2.0
86 MBit/s ∼15% -73%
iperf3 Client (transmit) TCP 1 m 4M x10
Acer Switch 3 SW312-31-P5VG
Intel Dual Band Wireless-AC 7265
573 MBit/s ∼100% +104%
Chuwi Lapbook 12.3
Intel Dual Band Wireless-AC 3165
281 MBit/s ∼49%
Acer Swift 1 SF113-31-P2CP
Intel Dual Band Wireless-AC 7265
154 MBit/s ∼27% -45%
Acer Aspire 1 A114-31-C472
Qualcomm Atheros QCA9377 Wireless Network Adapter
144 MBit/s ∼25% -49%
Jumper EZbook 3
Realtek RTL8723B USB 2.0
78 MBit/s ∼14% -72%

Input Devices

Chuwi uses a black chiclet keyboard, which creates a nice contrast to the silver chassis. Thanks to the white lettering, you can see the smallish keys (16 x 14 mm) very well. Unfortunately, there is no background illumination. The typing experience is very convenient. You get comparatively long key travel for a modern device and also rich feedback. Only the space bar clatters quite a bit. You can definitely use this input for longer texts.

The touchpad sits a bit lower in the palm rest and has a slightly roughened surface, so you can easily find it with the fingers. Chuwi implemented a ClickPad and you can press the lower half down. It is well implemented and there is no clatter, but the mechanical clicking sound is extremely loud and sounds cheap. You should stick to tap-for-click. The handling was inconspicuous during our review period and gestures (up to four fingers) are well executed.

Input devices
Input devices

Display

Subpixel array
Subpixel array
Visible backlight-bleeding
Visible backlight-bleeding

Potential buyers of the Chuwi LapBook 12.3 do not have to worry about the display options, because there is just one: a 12.3-inch matte IPS display with a resolution of 2736x1824 pixels. The resolution is unusual and is otherwise only used by Microsoft for the Surface Pro. The Chuwi LapBook 12.3 is a special device thanks to the 3:2 aspect ratio since there are not many conventional notebooks with this aspect ratio (yet). By the way, the screen is provided by Samsung and has the ID SDC8353, which is the exact same model we know from the Surface Pro 4, while the 2017 models of the Surface Pro are equipped with LG panels. It is quite interesting that we could not determine any PWM-flickering on the Chuwi – contrary to Microsoft's Surface Pro 4.

Unlike the panel of the Surface Pro, however, the display of the test model cannot meet the highest quality standards. Both the contrast and the color gamut are very good, but the average luminance of 219 nits is significantly lower compared to the Surface Pro 4, which is close to 400 nits. The latter is obviously much more expensive, but many other rivals are better in this respect as well. The low black value is a big advantage though and results in an extremely high contrast of more than 1700:1. Subjectively, the picture is very crisp and there is only a slightly grainy impression on bright content. Dark content also reveals some backlight-bleeding at the lower edge as well as the upper corners.

224
cd/m²
247
cd/m²
220
cd/m²
218
cd/m²
224
cd/m²
205
cd/m²
218
cd/m²
219
cd/m²
199
cd/m²
Distribution of brightness
X-Rite i1Pro 2
Maximum: 247 cd/m² Average: 219.3 cd/m² Minimum: 35.2 cd/m²
Brightness Distribution: 81 %
Center on Battery: 222 cd/m²
Contrast: 1723:1 (Black: 0.13 cd/m²)
ΔE Color 2.4 | 0.4-29.43 Ø6.2
ΔE Greyscale 2.5 | 0.64-98 Ø6.4
98.3% sRGB (Argyll 3D) 63.4% AdobeRGB 1998 (Argyll 3D)
Gamma: 2.31
Chuwi Lapbook 12.3
SDC8353, , 2736x1824, 12.3
Microsoft Surface Pro 4, Core m3
Samsung SDC3853, , 2736x1824, 12.3
Acer Swift 1 SF113-31-P2CP
AU Optronics AUO442D, , 1920x1080, 13.3
Acer Switch 3 SW312-31-P5VG
XR122EA2T, , 1920x1200, 12.2
Jumper EZbook 3
MS_9003, , 1920x1080, 14.1
Lenovo E31-80 80MX0107GE
AU Optronics B133XTN01.6, , 1366x768, 13.3
Response Times
2%
15%
22%
34%
13%
Response Time Grey 50% / Grey 80% *
48.4 (24.8, 23.6)
46 (17.2, 28.8)
5%
37 (18, 19)
24%
37 (18, 19)
24%
46 (25, 21)
5%
44 (25, 19)
9%
Response Time Black / White *
30.8 (16.4, 14.4)
31 (6, 25.2)
-1%
29 (16, 13)
6%
25 (14, 12)
19%
11.6 (7.7, 3.8)
62%
26 (20, 6)
16%
PWM Frequency
50 (50)
20000 (90)
200 (99)
Screen
-7%
-52%
-32%
-226%
-174%
Brightness middle
224
389.2
74%
273
22%
364
63%
384
71%
234
4%
Brightness
219
392
79%
258
18%
341
56%
341
56%
222
1%
Brightness Distribution
81
92
14%
81
0%
85
5%
76
-6%
87
7%
Black Level *
0.13
0.27
-108%
0.24
-85%
0.47
-262%
1.28
-885%
0.54
-315%
Contrast
1723
1441
-16%
1138
-34%
774
-55%
300
-83%
433
-75%
Colorchecker DeltaE2000 *
2.4
3.61
-50%
4.84
-102%
3.4
-42%
8.7
-263%
12.09
-404%
Colorchecker DeltaE2000 max. *
3.7
9.11
-146%
7.61
-106%
16.7
-351%
20.25
-447%
Greyscale DeltaE2000 *
2.5
3.8
-52%
5.23
-109%
1.7
32%
11.1
-344%
13
-420%
Gamma
2.31 95%
2.16 102%
2.38 92%
2.36 93%
2.2 100%
2.78 79%
CCT
6869 95%
5969 109%
7180 91%
6750 96%
12445 52%
15562 42%
Color Space (Percent of AdobeRGB 1998)
63.4
63
-1%
37
-42%
59
-7%
36
-43%
Color Space (Percent of sRGB)
98.3
97
-1%
59
-40%
91
-7%
56
-43%
Total Average (Program / Settings)
-3% / -5%
-19% / -41%
-5% / -23%
-96% / -174%
-81% / -143%

* ... smaller is better

You can see the potential of the display in our measurements with the X-Rite i1Pro2 spectrophotometer. The average DeltaE-2000 deviations for the grayscale as well as the colors are already in the target range <3 ex-works. The color temperature is slightly too cool and you can see a minor blue cast in the grayscale, but it is not visible in practice. There are still some smaller outliers for the colors, but the performance is already excellent, especially for the price, and calibration is not really necessary.

Grayscale
Grayscale
Saturation Sweeps
Saturation Sweeps
ColorChecker
ColorChecker

We still tried it and were able to improve the results even further. All values are now where they should be and there are no more outliers. Such a result is usually reserved for expensive laptops or high-end tablets like the Microsoft Surface Pro. Our calibrated profile is linked in the display box further at the top and can be downloaded for free.

Grayscale (calibrated)
Grayscale (calibrated)
Saturation Sweeps (calibrated)
Saturation Sweeps (calibrated)
ColorChecker (calibrated)
ColorChecker (calibrated)

The CalMAN screenshots already showed that the color accuracy does not decrease at higher saturation levels, which indicates high sRGB gamut. We can confirm this, and the sRGB reference is almost covered completely; the more challenging AdobeRGB gamut is still covered by 63.4%. This qualifies the LapBook 12.3 for some picture-editing, but complex operations will be too challenging for the otherwise pretty slow hardware.

sRGB: 98.3%
sRGB: 98.3%
AdobeRGB: 63.4%
AdobeRGB: 63.4%

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
30.8 ms ... rise ↗ and fall ↘ combined↗ 16.4 ms rise
↘ 14.4 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. » 77 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (25.6 ms).
       Response Time 50% Grey to 80% Grey
48.4 ms ... rise ↗ and fall ↘ combined↗ 24.8 ms rise
↘ 23.6 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. » 80 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (40.9 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: 52 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 9254 (minimum: 43 - maximum: 142900) Hz was measured.

The matte screen surface helps outdoors, but a comfortable experience is prevented by the low luminance. Even working on a cloudy day is not very enjoyable. However, this is not a result of the viewing-angle stability. Chuwi uses a high-quality IPS panel, and there are no picture distortions even from extreme angles.

In the sun
In the sun
Viewing-angle stability
Viewing-angle stability

Performance

After the good results for the case and the display in particular, we now have to lower our expectations or adjust them to the low price, respectively. However, everyday tasks are still no problem for the Intel Celeron CPU, 6 GB RAM, and 64 GB eMMC storage. This includes things like web-browsing, mails, YouTube (also 4K), video-streaming and light picture or video-editing. The performance should be sufficient for many home users.

Preloaded apps
Preloaded apps
 

Processor

Maximum clock: 2.13 GHz
Maximum clock: 2.13 GHz

Intel's Celeron N3450 inside the Chuwi LapBook 12.3 is a quad-core processor with a low base clock of 1.1 GHz. It does not consume much power and is a good choice for passively cooled devices. The Celeron belongs to the Apollo Lake series and is less powerful than its popular Core-i siblings. Features like Hyper-Threading or Turbo Boost are missing as well, but the processor cores can still reach up to 2.2 GHz via Burst. Our LapBook 12.3 can reach up to 2.13 GHz.

This value can be maintained in single-core and multi-core tests, so the Cinebench R15 Multi score is comparatively good. You will notice the slightly lower clock (2.13 vs. 2.2 GHz) in the Single test though.

Cinebench R15
CPU Single 64Bit
Microsoft Surface Pro 4, Core i5, 128GB
Intel Core i5-6300U
122 Points ∼56% +177%
Lenovo E31-80 80MX0107GE
Intel Core i5-6200U
116 Points ∼53% +164%
Cube Thinker m3
Intel Core m3-7Y30
103 Points ∼47% +134%
Microsoft Surface Pro 4, Core m3
Intel Core m3-6Y30
88 Points ∼40% +100%
Acer Swift 1 SF113-31-P2CP
Intel Pentium N4200
53 Points ∼24% +20%
Acer Switch 3 SW312-31-P5VG
Intel Pentium N4200
51 Points ∼23% +16%
Acer Aspire 1 A114-31-C472
Intel Celeron N3450
48 Points ∼22% +9%
Jumper EZbook 3
Intel Celeron N3350
46 Points ∼21% +5%
Chuwi Lapbook 12.3
Intel Celeron N3450
44 Points ∼20%
CPU Multi 64Bit
Microsoft Surface Pro 4, Core i5, 128GB
Intel Core i5-6300U
306 Points ∼7% +83%
Lenovo E31-80 80MX0107GE
Intel Core i5-6200U
287 Points ∼7% +72%
Cube Thinker m3
Intel Core m3-7Y30
226 Points ∼5% +35%
Microsoft Surface Pro 4, Core m3
Intel Core m3-6Y30
206 Points ∼5% +23%
Chuwi Lapbook 12.3
Intel Celeron N3450
167 Points ∼4%
Acer Switch 3 SW312-31-P5VG
Intel Pentium N4200
159 Points ∼4% -5%
Acer Swift 1 SF113-31-P2CP
Intel Pentium N4200
144.5 Points ∼3% -13%
Acer Aspire 1 A114-31-C472
Intel Celeron N3450
144 Points ∼3% -14%
Jumper EZbook 3
Intel Celeron N3350
84 Points ∼2% -50%

Our Cinebench R15 Multi loop checks how the laptop can handle sustained workloads. Passively cooled laptops often struggle in this test, and this seems to be the case here as well. However, the score stabilizes after a couple of runs and the high level can be maintained. This illustrates the limited performance potential of the CPU pretty well, because even small background tasks can affect the performance noticeably.

The processor performance is not limited on battery. More information and benchmarks for the Intel Celeron N3450 are available here.

0102030405060708090100110120130140150160170Tooltip
Cinebench R15 OpenGL Ref. Match 64 Bit
Cinebench R11.5 CPU Multi 32Bit
1.35 Points
Cinebench R11.5 CPU Single 32Bit
0.5 Points
Cinebench R15 CPU Single 64Bit
44 Points
Cinebench R15 CPU Multi 64Bit
167 Points
Cinebench R15 OpenGL 64Bit
15.74 fps
Cinebench R15 Ref. Match 64Bit
97.7 %
Help

System Performance

It is no surprise that our test model does not perform very well in the PCMarks considering the slow components in combination with the high display resolution. But is that actually noticeable in practice? The limitations are actually very small, which is also a result of the storage solution (more on that in the next section). The system is still quite responsive in general.

4K YouTube video (H.265)
4K YouTube video (H.265)
4K video (H.264)
4K video (H.264)

It is no problem to watch high-resolution videos, which look great on this screen. A 4K YouTube video (H.265, 60 FPS) with the default Edge browser results in a CPU load between 40-60%, but the playback is still completely smooth. The situation is even better when you watch a 4K video (H.264) from the hard drive at 15-25% CPU load.

PCMark 8 - Home Score Accelerated v2
Lenovo E31-80 80MX0107GE
HD Graphics 520, 6200U, Samsung MZYTY256HDHP
3393 Points ∼56% +132%
Cube Thinker m3
HD Graphics 615, 7Y30
2881 Points ∼47% +97%
Acer Switch 3 SW312-31-P5VG
HD Graphics 505, N4200, Hynix HCG4a2 64 GB
2066 Points ∼34% +41%
Acer Swift 1 SF113-31-P2CP
HD Graphics 505, N4200, 256 GB NVMe
1926 Points ∼32% +32%
Jumper EZbook 3
HD Graphics 500, N3350, Toshiba 064G93 64 GB eMMC
1592 Points ∼26% +9%
Chuwi Lapbook 12.3
HD Graphics 500, N3450, 64 GB eMMC Flash
1461 (min: 1450, max: 1461) Points ∼24%
PCMark 8 Home Score Accelerated v2
1461 points
PCMark 8 Creative Score Accelerated v2
1861 points
PCMark 8 Work Score Accelerated v2
2152 points
Help

Storage Devices

Chuwi uses flash storage for the LapBook 12.3, but it is only a slow eMMC module (Toshiba) with a capacity of 64 GB. The benchmark results are clearly beaten by other eMMC modules. Subjectively, however, the handling is still sufficiently quick and responsive. You will still notice some occasional delays if you are used to an SSD-based system.

We already mentioned the maintenance hatch at the bottom, where you can implement an M.2-SSD (2242, SATA) to expand the storage capacity. We cannot say whether you can use this SSD as the primary drive due to the lack of a corresponding module.

Chuwi Lapbook 12.3
64 GB eMMC Flash
Microsoft Surface Pro 4, Core i5, 128GB
Samsung MZFLV128 NVMe
Acer Switch 3 SW312-31-P5VG
Hynix HCG4a2 64 GB
Acer Aspire 1 A114-31-C472
Hynix HBG4a2 32 GB eMMC
Acer Swift 1 SF113-31-P2CP
256 GB NVMe
Lenovo E31-80 80MX0107GE
Samsung MZYTY256HDHP
CrystalDiskMark 3.0
1721%
387%
435%
1141%
2114%
Write 4k QD32
2.57
153.6
5877%
33.54
1205%
35.02
1263%
101
3830%
229.8
8842%
Read 4k QD32
15.28
368.3
2310%
30.39
99%
29.93
96%
130.3
753%
299.7
1861%
Write 4k
2.42
101.5
4094%
26.31
987%
28.62
1083%
56.96
2254%
88.02
3537%
Read 4k
4.93
28.51
478%
11.43
132%
24.06
388%
10.78
119%
35.05
611%
Write 512
32.94
154.2
368%
140
325%
132.1
301%
387.1
1075%
303.6
822%
Read 512
132.01
266.3
102%
231.6
75%
233.9
77%
318.9
142%
398.1
202%
Write Seq
51.5
154.2
199%
149.3
190%
147.9
187%
440.1
755%
457.4
788%
Read Seq
150.8
666
342%
272.2
81%
275.7
83%
450.3
199%
521.6
246%
64 GB eMMC Flash
Sequential Read: 150.8 MB/s
Sequential Write: 51.5 MB/s
512K Read: 132.01 MB/s
512K Write: 32.94 MB/s
4K Read: 4.93 MB/s
4K Write: 2.42 MB/s
4K QD32 Read: 15.28 MB/s
4K QD32 Write: 2.57 MB/s

GPU Performance

GPU-Z: Intel HD Graphics 500
GPU-Z: Intel HD Graphics 500

The Intel HD Graphics 500 is an iGPU for Apollo Lake CPUs. It is equipped with just 12 EUs (Executive Units) and is based on the older Skylake GPU architecture.

The GPU is very slow and not designed for challenging applications. Intel's HD Graphics 620, also not a performance miracle, is almost three times faster. Still, the LapBook 12.3 performs well against its direct rivals and is on par with the Acer Swift 1 in 3DMark 11. Both the Acer Switch 3 (HD 505) and the Surface Pro 4 (HD 515), however, are noticeably faster.

The graphics performance is not reduced on battery power. More technical information and benchmarks for the HD Graphics 500 are available in our Tech section.

3DMark 11 - 1280x720 Performance GPU
Lenovo ThinkPad X270 20HN0012PB
Intel HD Graphics 620, Intel Core i7-7500U
1501 Points ∼100% +157%
Lenovo E31-80 80MX0107GE
Intel HD Graphics 520, Intel Core i5-6200U
1258 Points ∼84% +115%
Microsoft Surface Pro 4, Core m3
Intel HD Graphics 515, Intel Core m3-6Y30
1206 Points ∼80% +107%
Acer Switch 3 SW312-31-P5VG
Intel HD Graphics 505, Intel Pentium N4200
726 Points ∼48% +24%
Chuwi Lapbook 12.3
Intel HD Graphics 500, Intel Celeron N3450
584 Points ∼39%
Acer Swift 1 SF113-31-P2CP
Intel HD Graphics 505, Intel Pentium N4200
552 Points ∼37% -5%
Jumper EZbook 3
Intel HD Graphics 500, Intel Celeron N3350
458 Points ∼31% -22%
3DMark 11 Performance
655 points
3DMark Cloud Gate Standard Score
2262 points
3DMark Fire Strike Score
286 points
3DMark Fire Strike Extreme Score
129 points
Help

Gaming Performance

The integrated Intel HD Graphics is definitely designed for multimedia applications but not for gaming. Even BioShock Infinite from 2013 is not playable at the lowest settings. You should either focus on even older games or simple titles from the Windows Store.

low med. high ultra
BioShock Infinite (2013) 21.213fps

Emissions & Energy

System Noise

The CPU of the LapBook 12.3 is cooled passively. There is no mechanical hard drive, either, so the laptop is silent in every situation. We did not hear any electronic noises from our test model.

Temperature

Stress test (Prime95 + FurMark)
Stress test (Prime95 + FurMark)

The components are not particularly powerful, so the moderate temperature development is no surprise. The surface temperatures also stay below 40 °C in the stress test, while the CPU warms up to 73 °C, which is not critical by any means though. The CPU starts at 1.9 GHz for all four cores in the stress test, and the GPU runs at 700 MHz – but only for two seconds. The TDP then drops from 15 to 6 W (CPU: 1.2 GHz; GPU: 200 MHz), which does not change over the course of the test.

Max. Load
 38.7 °C
102 F
36.3 °C
97 F
30 °C
86 F
 
 39.2 °C
103 F
34.8 °C
95 F
29.8 °C
86 F
 
 34.1 °C
93 F
32 °C
90 F
28.7 °C
84 F
 
Maximum: 39.2 °C = 103 F
Average: 33.7 °C = 93 F
28.9 °C
84 F
33.4 °C
92 F
39.3 °C
103 F
28.7 °C
84 F
34.5 °C
94 F
39.4 °C
103 F
28.5 °C
83 F
29.1 °C
84 F
33.3 °C
92 F
Maximum: 39.4 °C = 103 F
Average: 32.8 °C = 91 F
Power Supply (max.)  40.9 °C = 106 F | Room Temperature 22.6 °C = 73 F | Voltcraft IR-900
(±) The average temperature for the upper side under maximal load is 33.7 °C / 93 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 39.2 °C / 103 F, compared to the average of 35.8 °C / 96 F, ranging from 22 to 57 °C for the class Subnotebook.
(+) The bottom heats up to a maximum of 39.4 °C / 103 F, compared to the average of 40.2 °C / 104 F
(+) In idle usage, the average temperature for the upper side is 26.5 °C / 80 F, compared to the device average of 30.7 °C / 87 F.
(+) The palmrests and touchpad are reaching skin temperature as a maximum (34.1 °C / 93.4 F) and are therefore not hot.
(-) The average temperature of the palmrest area of similar devices was 28.6 °C / 83.5 F (-5.5 °C / -9.9 F).
Stress test (top)
Stress test (top)
Stress test (bottom)
Stress test (bottom)

Speakers

The two speaker grilles are located at the outer edges of the bottom panel behind the front support feet. Our measurements show a decent maximum volume and the speakers leave a good impression for movies or TV shows in particular. The lack of bass and problems with the differentiation are mainly noticeable when you listen to music. You should use a pair of headphones or external speakers if you like to listen to more than a bit of web radio in the background. The stereo jack was inconspicuous during our review.

dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2029.230.62528303127304025.726.55026.127.66324.526.8802426.410024.428.412522.128.816021.428.720023.435.925020.43731518.541.240017.645.350016.948.563016.255.980015.962.4100015.767.2125015.668.6160015.764.3200016.160.2250016.559.3315017.363.8400017.766.1500018.365.5630018.866.9800019.564.8100002056.51250020.454.5160002147.7SPL29.776.4N1.335.7median 18.3median 56.5Delta2.111.829.832.129.831.229.631.230.431.530.428.932.828.929.429.229.427.827.727.825.925.525.927.124.327.124.924.124.924.22424.222.525.922.521.526.921.520.733.720.720.239.820.219.239.119.218.450.418.418.159.118.117.56317.517.256.617.217.558.517.517.355.317.317.35817.317.658.817.617.656.317.617.754.917.717.957.817.91859.21818.256.318.218.249.118.218.342.318.330.169.730.11.423.91.4median 18.2median 54.9median 18.21.4111.4hearing rangehide median Pink NoiseChuwi Lapbook 12.3Acer Switch 3 SW312-31-P5VG
Chuwi Lapbook 12.3 audio analysis

(±) | speaker loudness is average but good (76.4 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 23.2% lower than median
(+) | bass is linear (6.5% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 7.5% higher than median
(±) | linearity of mids is average (11.7% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 6.7% higher than median
(±) | linearity of highs is average (7.5% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (29.3% difference to median)
Compared to same class
» 86% of all tested devices in this class were better, 2% similar, 12% worse
» The best had a delta of 8%, average was 20%, worst was 50%
Compared to all devices tested
» 86% of all tested devices were better, 4% similar, 10% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Acer Switch 3 SW312-31-P5VG audio analysis

(-) | not very loud speakers (63 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 28.4% lower than median
(+) | bass is linear (5.1% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | reduced mids - on average 6.7% lower than median
(±) | linearity of mids is average (14.4% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2.4% away from median
(+) | highs are linear (5.6% delta to prev. frequency)
Overall 100 - 16.000 Hz
(-) | overall sound is not linear (30.7% difference to median)
Compared to same class
» 84% of all tested devices in this class were better, 4% similar, 12% worse
» The best had a delta of 11%, average was 22%, worst was 53%
Compared to all devices tested
» 89% of all tested devices were better, 4% similar, 7% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Frequency comparison (checkboxes select/deselectable!)

Power Consumption

Our consumption measurements reveal high idle consumption results. The two comparison devices with similar processors (Swift 1 and Jumper EZBook 3) are much more efficient; only the Cube Thinker consumes more power while idling. However, you have to consider the much higher display resolution of the LapBook; but more optimizations would have been nice.

The 24-W power adapter is sufficient but does not have any headroom to charge the device under load.

Chuwi Lapbook 12.3
N3450, 12.3, 2736x1824
Acer Swift 1 SF113-31-P2CP
N4200, 13.3, 1920x1080
Jumper EZbook 3
N3350, 14.1, 1920x1080
Cube Thinker m3
7Y30, 13.5, 3000x2000
Lenovo E31-80 80MX0107GE
6200U, 13.3, 1366x768
Microsoft Surface Pro 4, Core i5, 128GB
6300U, 12.3, 2736x1824
Power Consumption
20%
32%
-12%
-6%
-2%
Idle Minimum *
5.9
3.4
42%
3.18
46%
4.5
24%
5.6
5%
4.4
25%
Idle Average *
7.7
7
9%
6.14
20%
10.3
-34%
6.8
12%
9
-17%
Idle Maximum *
8.6
9.1
-6%
6.4
26%
11.5
-34%
7.5
13%
10.7
-24%
Load Average *
18.2
15.2
16%
13.3
27%
23.3
-28%
26.9
-48%
19.6
-8%
Load Maximum *
23.6
14.7
38%
13.6
42%
21.1
11%
26.4
-12%
19.9
16%

* ... smaller is better

Power Consumption
Off / Standbydarklight 1.4 / 1.7 Watt
Idledarkmidlight 5.9 / 7.7 / 8.6 Watt
Load midlight 18.2 / 23.6 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy

Battery Runtime

The battery capacity is just 36.5 Wh, which is not much. Chuwi is quite conservative with its runtime prediction at 5 hours; our WLAN test runs for more than 6.5 hours – a decent result for this capacity. The Acer Swift 1, for example, has a bigger battery, but it does not last as long. The Lenovo E31-80 on the other hand manages longer runtimes with a smaller battery but is only equipped with a lower display resolution.

A full charge takes three hours and four minutes with the provided 24-W power adapter (182 grams, 9.5 x 4.2 x 3 cm). The charging progress is very linear and quick-charge is not supported.

WLAN runtime: more than 6.5 hours
WLAN runtime: more than 6.5 hours
Charging takes more than 3 hours.
Charging takes more than 3 hours.
Battery Runtime - WiFi Websurfing 1.3
Microsoft Surface Pro 4, Core m3
6Y30, HD Graphics 515, 38 Wh, 2736x1824
488 min ∼19% +24%
Lenovo E31-80 80MX0107GE
6200U, HD Graphics 520, 35 Wh, 1366x768
422 min ∼16% +7%
Jumper EZbook 3
N3350, HD Graphics 500, 38 Wh, 1920x1080
420 min ∼16% +6%
Chuwi Lapbook 12.3
N3450, HD Graphics 500, 36.48 Wh, 2736x1824
395 min ∼15%
Acer Switch 3 SW312-31-P5VG
N4200, HD Graphics 505, 36 Wh, 1920x1200
309 min ∼12% -22%
Acer Swift 1 SF113-31-P2CP
N4200, HD Graphics 505, 42 Wh, 1920x1080
285 min ∼11% -28%
Cube Thinker m3
7Y30, HD Graphics 615, 50 Wh, 3000x2000
253 min ∼10% -36%

Pros

+ great aluminum case
+ high-quality IPS screen (matte, no PWM)
+ almost full sRGB gamut
+ silent operation
+ easy storage expansion via M.2 SSD (2242)
+ inexpensive

Cons

- display could be brighter
- loud ClickPad
- slow eMMC storage
- long charging time

Verdict

In review: Chuwi LapBook 12.3. Test model courtesy of Chuwi.
In review: Chuwi LapBook 12.3. Test model courtesy of Chuwi.

We are positively surprised by the Chuwi LapBook 12.3. Test models in this price range are usually equipped with plastic cases and mediocre screens. The aluminum chassis of the LapBook 12.3 on the other hand feels premium, and you might suspect a four-digit price when you watch a video on the high-res screen.

The other sections, especially the performance, are much more in line with the price. Still, everyday tasks are no problem for the small quad-core processor, and the same applies for playback of high-res movies as well. The LapBook 12.3 does not have any serious issues in general. We think two areas could be improved: The very good panel could be brighter, and the Surface Pro 4 shows there is still a lot of headroom. However, the power consumption would probably be much higher in return. An illuminated keyboard would have been nice as well.

Great aluminum chassis, excellent display, silent operation, and sufficient performance for common tasks: The Chuwi LapBook 12.3 offers an impressive price-performance ratio and deserves our recommendation. 

If you consider the current price at around 300 Euros (~$353), however, there are not really any drawbacks. The LapBook 12.3 is almost a sensation in this price range and even noticeably more expensive systems like the Acer Switch 3 or Swift 1 do not offer much more, so the Chuwi LapBook 12.3 deserves our Best Value Award.

Chuwi Lapbook 12.3 - 10/16/2017 v6
Andreas Osthoff, Benjamin Herzig

Chassis
88 /  98 → 90%
Keyboard
84%
Pointing Device
83%
Connectivity
38 / 80 → 48%
Weight
70 / 35-78 → 82%
Battery
89%
Display
90%
Games Performance
45 / 68 → 66%
Application Performance
49 / 87 → 57%
Temperature
92 / 91 → 100%
Noise
100%
Audio
77 / 91 → 85%
Camera
35 / 85 → 42%
Average
72%
84%
Subnotebook - Weighted Average

Pricecompare

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> Notebook / Laptop Reviews and News > Reviews > Chuwi LapBook 12.3 (Celeron, 2K IPS) Laptop Review
Andreas Osthoff, Benjamin Herzig, 2017-10-18 (Update: 2017-10-19)
Andreas Osthoff
Andreas Osthoff - Senior Editor Business
I grew up with computers and modern consumer electronics. I am interested in the technology since I had my first computer, a Commodore C64, and started building my own PCs after that. My focus here at Notebookcheck is the business segment including mobile workstations, but I also like to test new mobile devices. It is always a great experience to review and compare new products. My free time is filled with a lot of sports, in the summer mainly on my bike.