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Onyx Boox Tab X review - E-Ink tablet for big tasks?

Reading in XXL format. At 13.3 inches, the Onyx Boox Tab X is one of the largest e-ink tablets on the market. Thanks to the Android operating system, it offers app support and therefore enables a wide range of applications. Find out how the tablet performs in our comprehensive test here.
Onyx Boox Tab X - Image: Florian Schmitt
Onyx Boox TabX
Processor
Qualcomm Snapdragon 662 8 x 1.8 - 2 GHz, Kryo 260
Graphics adapter
Memory
6 GB 
Display
13.30 inch 4:3, 2200 x 1650 pixel 195 PPI, capacitive touchscreen, native pen support, E-Ink Mobius, 16 greyscales, glossy: no
Storage
128 GB UFS 2.1 Flash, 128 GB 
, 100 GB free
Connections
1 USB 2.0, Audio Connections: audio via USB-C, Brightness Sensor, Sensors: position sensor
Networking
802.11 a/b/g/n/ac (a/b/g/n = Wi-Fi 4/ac = Wi-Fi 5/), Bluetooth 5.0
Size
height x width x depth (in mm): 7.9 x 310 x 228 ( = 0.31 x 12.2 x 8.98 in)
Battery
6300 mAh Lithium-Polymer
Operating System
Android 11
Additional features
Speakers: dual speakers on the back, digitizer, USB-C cable, 24 Months Warranty, fanless
Weight
570 g ( = 20.11 oz / 1.26 pounds) ( = 0 oz / 0 pounds)
Price
950 Euro
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

Possible competitors in comparison

Rating
Date
Model
Weight
Drive
Size
Resolution
Best Price
78.5 %
02/2024
Onyx Boox TabX
SD 662, Adreno 610
570 g128 GB UFS 2.1 Flash13.30"2200x1650
82.2 %
12/2023
Onyx Boox Tab Ultra C Pro
SD 855, Adreno 640
450 g128 GB UFS 3.1 Flash10.30"1240x930
75.2 %
08/2023
Lenovo Smart Paper
RK3566, Mali-G52 MP2
408 g64 GB eMMC Flash10.30"1872x1404
79.4 %
08/2022
Huawei MatePad Paper
Kirin 820e, Mali-G57 MP6
360 g64 GB UFS 2.2 Flash10.30"1872x1404

Case and equipment - Metal chassis looks fragile

If you are looking for a really large e-ink tablet with pen input, you should take a look at the Onyx Boox Tab X: With its 13.3-inch screen, it is one of the largest e-readers on the market. At 950 euros, the device is not exactly cheap, but there is hardly any other tablet that offers so much space for reading and taking notes.

The housing is made of an aluminum-magnesium material and weighs 570 grams. This is actually fine considering the size of the tablet, but it is still noticeably heavier than handier e-readers. The edges around the screen are just over a centimeter wide, only the bottom is 2.5 centimeters wide so that you can hold the Tab X comfortably without constantly accidentally operating the touchscreen.

With such a huge tablet, there is of course always the question of stability: The Onyx Boox Tab X can be twisted and then creaks noticeably; our test even revealed a hairline crack on the side. The tablet should therefore be handled with care. There is no IP certification for the chassis, so you should also refrain from submerging it in the bathtub or using it in dusty environments.

With 128 GB of mass storage and 6 GB of RAM, the memory configuration is adequate. However, the UFS 2.1 flash installed here could be faster in this price range.

External devices can be connected via a USB-C port and Bluetooth. However, there is no microSD port for memory expansion.

Onyx Boox Tab X
Onyx Boox Tab X
Onyx Boox Tab X
Onyx Boox Tab X
Onyx Boox Tab X
Onyx Boox Tab X
Onyx Boox Tab X

Size comparison

310 mm / 12.2 inch 228 mm / 8.98 inch 7.9 mm / 0.311 inch 570 g1.257 lbs225.2 mm / 8.87 inch 182.7 mm / 7.19 inch 6.65 mm / 0.2618 inch 360 g0.794 lbs225 mm / 8.86 inch 184.5 mm / 7.26 inch 6.6 mm / 0.2598 inch 450 g0.992 lbs226 mm / 8.9 inch 195 mm / 7.68 inch 5.5 mm / 0.2165 inch 408 g0.899 lbs297 mm / 11.7 inch 210 mm / 8.27 inch 1 mm / 0.03937 inch 5.7 g0.01257 lbs

Communication, software and operation - Android apps for more flexibility

WiFi 5 is the fastest Wi-Fi standard that the Tab X can use. It therefore achieves reasonable speeds and quite stable transmission. However, a gigabit Internet connection cannot really be utilized. This is a shame, especially considering the high price level. The Huawei MatePad Paper or the Onyx Boox Tab Ultra C Pro show how it can be done better.

You have to do without mobile internet, as there is no SIM slot. The tablet can determine an approximate position even without satellite support via Google's Wi-Fi database, but this is rather inaccurate when moving and in areas with few Wi-Fi networks.

The operating system used is Android 11, which has a less modified interface than other e-readers: You can find widgets and icons on the home screen and place additional apps on new pages. Everything can be moved or combined into groups. The security patches date from June 2023 and are therefore over six months old at the time of testing. The manufacturer does not specify how often new updates will be available.

The touchscreen works reliably, but the low frame rate of the e-ink display means you have to get used to slight delays in the system's response. The stylus can be used to take notes and draw, although only the 16 shades of gray on the screen are available. Of course, you can also use creativity apps from the Google Play Store.

What strikes us: The large e-ink tablet has hardly any physical buttons. There is only the standby button on the top edge but no scroll buttons or volume control. You therefore have to control these things via the touchscreen.

A password can be set for data security. However, the device cannot be unlocked biometrically, for example using fingerprints.

Networking
iperf3 transmit AXE11000
Huawei MatePad Paper
945 (826min - 958max) MBit/s +164%
Onyx Boox Tab Ultra C Pro
470.3 (462min - 483max) MBit/s +31%
Onyx Boox TabX
358 (346min - 373max) MBit/s
Lenovo Smart Paper
286 (236min - 308max) MBit/s -20%
iperf3 receive AXE11000
Huawei MatePad Paper
928 (812min - 949max) MBit/s +196%
Onyx Boox Tab Ultra C Pro
505 (437min - 545max) MBit/s +61%
Onyx Boox TabX
313 (283min - 338max) MBit/s
Lenovo Smart Paper
211 (186min - 246max) MBit/s -33%

Legend

 
Onyx Boox TabX Qualcomm Snapdragon 662, Qualcomm Adreno 610, 128 GB UFS 2.1 Flash
 
Onyx Boox Tab Ultra C Pro Qualcomm Snapdragon 855, Qualcomm Adreno 640, 128 GB UFS 3.1 Flash
 
Lenovo Smart Paper Rockchip RK3566, ARM Mali-G52 MP2, 64 GB eMMC Flash
 
Huawei MatePad Paper HiSilicon Kirin 820e, ARM Mali-G57 MP6, 64 GB UFS 2.2 Flash
020406080100120140160180200220240260280300320340360Tooltip
Onyx Boox TabX; iperf3 receive AXE11000; iperf 3.1.3: Ø313 (283-338)
Onyx Boox TabX; iperf3 transmit AXE11000; iperf 3.1.3: Ø358 (346-373)

E-reading - Many possibilities

The pre-installed Neo Reader is very versatile and can also be used in split-screen mode with other apps, for example, to take notes. You can activate automatic page turning after a set time or have texts read aloud using text-to-speech. In terms of voice quality, this is of course more of a makeshift solution than a real audio book, but at least it works.

A big advantage of the Android system is that you can also download other reader apps such as Tolino or Amazon Kindle, and use them without any problems.

Display - Black and white display with high contrast

Close-up display
Close-up display

The E-Ink display comes from the Mobius series and has a resolution of 2,200 x 1,650 pixels. This type of screen works completely differently than IPS, OLED, or MiniLED displays: here, tiny ink particles with different electrical charges are actually physically present and positioned. This results in great contrast and good readability in ambient light without additional lighting.

In this case, it is a black and white panel with 16 shades of gray, which often makes the display appear somewhat coarse for images, but is ideal for drawings and text. The screen has a matt coating so that the tablet can also be used outdoors.

The display is illuminated from the front if required, as the ink particles are not translucent. The maximum brightness is between 55 and 88 cd/m², depending on the area. As the screen light is only required for operation in low ambient brightness, this brightness level is completely sufficient.

There is no PWM flickering, as once an image has been displayed, it does not need to be refreshed with this technology, provided the content does not change. The screen lighting should also be flicker-free thanks to the use of a direct current voltage source, as confirmed by our oscilloscope.

75
cd/m²
59
cd/m²
57
cd/m²
80
cd/m²
65
cd/m²
55
cd/m²
88
cd/m²
65
cd/m²
59
cd/m²
Distribution of brightness
tested with X-Rite i1Pro 2
Maximum: 88 cd/m² (Nits) Average: 67 cd/m² Minimum: 0.1 cd/m²
Brightness Distribution: 63 %
Center on Battery: 65 cd/m²
Contrast: ∞:1 (Black: 0 cd/m²)
ΔE Greyscale 15.2 | 0.57-98 Ø5.3
Gamma: 1.157
Onyx Boox TabX
E-Ink Mobius, 2200x1650, 13.30
Onyx Boox Tab Ultra C Pro
E-Ink, 1240x930, 10.30
Lenovo Smart Paper
E-Ink, 1872x1404, 10.30
Huawei MatePad Paper
E-Ink, 1872x1404, 10.30
Response Times
13%
39%
9%
Response Time Grey 50% / Grey 80% *
144.7 ?(67, 77.7)
105.5 ?(50.8, 54.7)
27%
134.4 ?(56.2, 68.2)
7%
121 ?(61, 60)
16%
Response Time Black / White *
95.9 ?(47.1, 48.8)
98.1 ?(45.6, 52.5)
-2%
27.5 ?(14.4, 13.1)
71%
94 ?(47, 47)
2%
PWM Frequency
Screen
2%
50%
13%
Brightness middle
65
44
-32%
113
74%
61.9
-5%
Brightness
67
43
-36%
106
58%
60
-10%
Brightness Distribution
63
91
44%
83
32%
80
27%
Black Level *
Greyscale dE 2000 *
15.2
10.5
31%
9.9
35%
9.1
40%
Gamma
1.157 190%
1.202 183%
1.371 160%
2.02 109%
CCT
8312 78%
6629 98%
7116 91%
6848 95%
Colorchecker dE 2000 *
19.76
Colorchecker dE 2000 max. *
37.12
Total Average (Program / Settings)
8% / 5%
45% / 46%
11% / 12%

* ... 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
95.9 ms ... rise ↗ and fall ↘ combined↗ 47.1 ms rise
↘ 48.8 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers.
In comparison, all tested devices range from 0.1 (minimum) to 240 (maximum) ms. » 100 % 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
144.7 ms ... rise ↗ and fall ↘ combined↗ 67 ms rise
↘ 77.7 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. » 100 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (34 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 18205 (minimum: 5 - maximum: 3846000) Hz was measured.

CalMAN Grayscale
CalMAN Grayscale

Performance, emissions and battery life - Only mediocre performance

With the Qualcomm Snapdragon 662 onyx Boox has only opted for a mid-range SoC for its Tab X, despite the high device price, which was also released 5 years ago. Compared to conventional e-readers without app support, the tablet still offers good performance. However, the in-house competition, such as the Tab Ultra C Pro, achieves results that are sometimes twice or even three times as high in the benchmarks.

The Tab X's performance is sufficient for everyday use; if you mainly read books and take notes, you will get a reasonably smooth experience. However, the UFS 2.1 flash used is also relatively slow. When surfing the Internet, you sometimes have to wait longer for websites to load, and images, in particular, take a long time to scroll.

Due to the tablet's large surface area, the SoC has no problem dissipating waste heat. As a result, the casing hardly heats up even after prolonged load: We measured a maximum of 29.2 °C. Even longer load hardly reduces the performance: The SoC delivers similar values in the 3DMark burnout test towards the end as at the beginning.

The speakers are located on the back of the device. Since there are two of them, stereo effects are possible, but they are not very noticeable due to the close placement. The speakers are not particularly loud, and the sound is very treble-heavy. Voices are reproduced clearly but sound less present and not very warm.

External speakers or headphones can be connected via Bluetooth or the USB-C port, which works without any problems and delivers a much better sound.

The battery has a capacity of 6300 mAh. This makes it significantly more powerful than most other e-readers and also gives the Tab X very good runtimes: With minimum screen lighting and in reading mode, the tablet manages 24:46 hours.

The tablet can be charged with up to 10 watts, which leads to very long charging times of up to 5 hours due to the large battery. Furthermore, you have to get a charger since it is not included in the package.

Geekbench 5.5
Single-Core
Onyx Boox Tab Ultra C Pro
Qualcomm Snapdragon 855, Adreno 640, 6144
744 Points +141%
Average of class Tablet
  (140 - 1892, n=64, last 2 years)
679 Points +120%
Huawei MatePad Paper
HiSilicon Kirin 820e, Mali-G57 MP6, 4096
566 Points +83%
Onyx Boox TabX
Qualcomm Snapdragon 662, Adreno 610, 6144
309 Points
Average Qualcomm Snapdragon 662
  (275 - 316, n=13)
308 Points 0%
Lenovo Smart Paper
Rockchip RK3566, Mali-G52 MP2, 4096
143 Points -54%
Multi-Core
Average of class Tablet
  (312 - 8524, n=64, last 2 years)
2429 Points +88%
Onyx Boox Tab Ultra C Pro
Qualcomm Snapdragon 855, Adreno 640, 6144
2268 Points +75%
Huawei MatePad Paper
HiSilicon Kirin 820e, Mali-G57 MP6, 4096
1853 Points +43%
Average Qualcomm Snapdragon 662
  (763 - 1453, n=13)
1299 Points 0%
Onyx Boox TabX
Qualcomm Snapdragon 662, Adreno 610, 6144
1295 Points
Lenovo Smart Paper
Rockchip RK3566, Mali-G52 MP2, 4096
312 Points -76%
Geekbench 6.2
Single-Core
Onyx Boox Tab Ultra C Pro
Qualcomm Snapdragon 855, Adreno 640, 6144
1008 Points +203%
Average of class Tablet
  (185 - 2107, n=38, last 2 years)
807 Points +142%
Onyx Boox TabX
Qualcomm Snapdragon 662, Adreno 610, 6144
333 Points
Average Qualcomm Snapdragon 662
  (330 - 333, n=2)
332 Points 0%
Lenovo Smart Paper
Rockchip RK3566, Mali-G52 MP2, 4096
203 Points -39%
Multi-Core
Onyx Boox Tab Ultra C Pro
Qualcomm Snapdragon 855, Adreno 640, 6144
2757 Points +148%
Average of class Tablet
  (493 - 5652, n=38, last 2 years)
2276 Points +105%
Average Qualcomm Snapdragon 662
  (1111 - 1147, n=2)
1129 Points +2%
Onyx Boox TabX
Qualcomm Snapdragon 662, Adreno 610, 6144
1111 Points
Lenovo Smart Paper
Rockchip RK3566, Mali-G52 MP2, 4096
493 Points -56%
PCMark for Android - Work 3.0
Average of class Tablet
  (3195 - 17267, n=60, last 2 years)
8515 Points +60%
Onyx Boox Tab Ultra C Pro
Qualcomm Snapdragon 855, Adreno 640, 6144
8421 Points +58%
Average Qualcomm Snapdragon 662
  (3195 - 7554, n=6)
5608 Points +5%
Onyx Boox TabX
Qualcomm Snapdragon 662, Adreno 610, 6144
5327 Points
Lenovo Smart Paper
Rockchip RK3566, Mali-G52 MP2, 4096
4045 Points -24%
3DMark
2560x1440 Sling Shot Extreme (ES 3.1)
Onyx Boox Tab Ultra C Pro
Qualcomm Snapdragon 855, Adreno 640, 6144
4851 Points +339%
Huawei MatePad Paper
HiSilicon Kirin 820e, Mali-G57 MP6, 4096
2571 Points +132%
Average of class Tablet
  (503 - 14235, n=48, last 2 years)
1994 Points +80%
Average Qualcomm Snapdragon 662
  (1106 - 1905, n=12)
1220 Points +10%
Onyx Boox TabX
Qualcomm Snapdragon 662, Adreno 610, 6144
1106 Points
Lenovo Smart Paper
Rockchip RK3566, Mali-G52 MP2, 4096
567 Points -49%
2560x1440 Sling Shot Extreme (ES 3.1) Graphics
Onyx Boox Tab Ultra C Pro
Qualcomm Snapdragon 855, Adreno 640, 6144
5429 Points +457%
Huawei MatePad Paper
HiSilicon Kirin 820e, Mali-G57 MP6, 4096
2675 Points +175%
Average of class Tablet
  (427 - 24605, n=48, last 2 years)
2107 Points +116%
Average Qualcomm Snapdragon 662
  (974 - 1074, n=12)
1017 Points +4%
Onyx Boox TabX
Qualcomm Snapdragon 662, Adreno 610, 6144
974 Points
Lenovo Smart Paper
Rockchip RK3566, Mali-G52 MP2, 4096
517 Points -47%
2560x1440 Sling Shot Extreme (ES 3.1) Physics
Onyx Boox Tab Ultra C Pro
Qualcomm Snapdragon 855, Adreno 640, 6144
3534 Points +68%
Average of class Tablet
  (858 - 5751, n=48, last 2 years)
2762 Points +31%
Average Qualcomm Snapdragon 662
  (2108 - 2513, n=12)
2368 Points +12%
Huawei MatePad Paper
HiSilicon Kirin 820e, Mali-G57 MP6, 4096
2262 Points +7%
Onyx Boox TabX
Qualcomm Snapdragon 662, Adreno 610, 6144
2108 Points
Lenovo Smart Paper
Rockchip RK3566, Mali-G52 MP2, 4096
858 Points -59%
2560x1440 Sling Shot Extreme (ES 3.1) Unlimited
Onyx Boox Tab Ultra C Pro
Qualcomm Snapdragon 855, Adreno 640, 6144
5803 Points +393%
Huawei MatePad Paper
HiSilicon Kirin 820e, Mali-G57 MP6, 4096
4281 Points +264%
Average of class Tablet
  (267 - 14235, n=56, last 2 years)
3133 Points +166%
Onyx Boox TabX
Qualcomm Snapdragon 662, Adreno 610, 6144
1176 Points
Average Qualcomm Snapdragon 662
  (740 - 1197, n=12)
1135 Points -3%
Lenovo Smart Paper
Rockchip RK3566, Mali-G52 MP2, 4096
596 Points -49%
2560x1440 Sling Shot Extreme (ES 3.1) Unlimited Graphics
Onyx Boox Tab Ultra C Pro
Qualcomm Snapdragon 855, Adreno 640, 6144
6636 Points +541%
Huawei MatePad Paper
HiSilicon Kirin 820e, Mali-G57 MP6, 4096
4472 Points +332%
Average of class Tablet
  (240 - 24605, n=56, last 2 years)
3728 Points +260%
Onyx Boox TabX
Qualcomm Snapdragon 662, Adreno 610, 6144
1036 Points
Average Qualcomm Snapdragon 662
  (642 - 1081, n=12)
999 Points -4%
Lenovo Smart Paper
Rockchip RK3566, Mali-G52 MP2, 4096
530 Points -49%
2560x1440 Sling Shot Extreme (ES 3.1) Unlimited Physics
Onyx Boox Tab Ultra C Pro
Qualcomm Snapdragon 855, Adreno 640, 6144
4031 Points +81%
Huawei MatePad Paper
HiSilicon Kirin 820e, Mali-G57 MP6, 4096
3725 Points +67%
Average of class Tablet
  (441 - 5751, n=56, last 2 years)
3195 Points +43%
Average Qualcomm Snapdragon 662
  (1588 - 2534, n=12)
2240 Points +1%
Onyx Boox TabX
Qualcomm Snapdragon 662, Adreno 610, 6144
2228 Points
Lenovo Smart Paper
Rockchip RK3566, Mali-G52 MP2, 4096
1061 Points -52%
Wild Life Score
Onyx Boox Tab Ultra C Pro
Qualcomm Snapdragon 855, Adreno 640, 6144
2951 Points +689%
Huawei MatePad Paper
HiSilicon Kirin 820e, Mali-G57 MP6, 4096
1925 Points +415%
Average of class Tablet
  (286 - 10018, n=56, last 2 years)
1704 Points +356%
Average Qualcomm Snapdragon 662
  (369 - 391, n=11)
378 Points +1%
Onyx Boox TabX
Qualcomm Snapdragon 662, Adreno 610, 6144
374 Points
Lenovo Smart Paper
Rockchip RK3566, Mali-G52 MP2, 4096
286 Points -24%
Wild Life Unlimited Score
Average of class Tablet
  (289 - 25317, n=62, last 2 years)
3208 Points +769%
Onyx Boox Tab Ultra C Pro
Qualcomm Snapdragon 855, Adreno 640, 6144
3079 Points +734%
Huawei MatePad Paper
HiSilicon Kirin 820e, Mali-G57 MP6, 4096
1886 Points +411%
Average Qualcomm Snapdragon 662
  (366 - 382, n=8)
370 Points 0%
Onyx Boox TabX
Qualcomm Snapdragon 662, Adreno 610, 6144
369 Points
Lenovo Smart Paper
Rockchip RK3566, Mali-G52 MP2, 4096
289 Points -22%
Wild Life Extreme
Average of class Tablet
  (75 - 6919, n=62, last 2 years)
917 Points +749%
Onyx Boox Tab Ultra C Pro
Qualcomm Snapdragon 855, Adreno 640, 6144
867 Points +703%
Huawei MatePad Paper
HiSilicon Kirin 820e, Mali-G57 MP6, 4096
625 Points +479%
Onyx Boox TabX
Qualcomm Snapdragon 662, Adreno 610, 6144
108 Points
Average Qualcomm Snapdragon 662
  (102 - 111, n=5)
107 Points -1%
Lenovo Smart Paper
Rockchip RK3566, Mali-G52 MP2, 4096
75 Points -31%
Wild Life Extreme Unlimited
Average of class Tablet
  (72 - 6909, n=60, last 2 years)
962 Points +843%
Onyx Boox Tab Ultra C Pro
Qualcomm Snapdragon 855, Adreno 640, 6144
864 Points +747%
Huawei MatePad Paper
HiSilicon Kirin 820e, Mali-G57 MP6, 4096
609 Points +497%
Average Qualcomm Snapdragon 662
  (100 - 107, n=4)
102.5 Points 0%
Onyx Boox TabX
Qualcomm Snapdragon 662, Adreno 610, 6144
102 Points
Lenovo Smart Paper
Rockchip RK3566, Mali-G52 MP2, 4096
72 Points -29%
GFXBench
on screen Aztec Ruins Normal Tier Onscreen
Average of class Tablet
  (3 - 111, n=66, last 2 years)
21.3 fps +344%
Huawei MatePad Paper
HiSilicon Kirin 820e, Mali-G57 MP6, 4096
19 fps +296%
Onyx Boox Tab Ultra C Pro
Qualcomm Snapdragon 855, Adreno 640, 6144
19 fps +296%
Average Qualcomm Snapdragon 662
  (4.8 - 15, n=13)
10.5 fps +119%
Onyx Boox TabX
Qualcomm Snapdragon 662, Adreno 610, 6144
4.8 fps
Lenovo Smart Paper
Rockchip RK3566, Mali-G52 MP2, 4096
3 fps -37%
1920x1080 Aztec Ruins Normal Tier Offscreen
Onyx Boox Tab Ultra C Pro
Qualcomm Snapdragon 855, Adreno 640, 6144
38 fps +358%
Average of class Tablet
  (2.5 - 279, n=66, last 2 years)
37.5 fps +352%
Huawei MatePad Paper
HiSilicon Kirin 820e, Mali-G57 MP6, 4096
29 fps +249%
Onyx Boox TabX
Qualcomm Snapdragon 662, Adreno 610, 6144
8.3 fps
Average Qualcomm Snapdragon 662
  (7.4 - 8.6, n=13)
8.27 fps 0%
Lenovo Smart Paper
Rockchip RK3566, Mali-G52 MP2, 4096
3.9 fps -53%
on screen Aztec Ruins High Tier Onscreen
Average of class Tablet
  (1.9 - 97.3, n=66, last 2 years)
14.8 fps +410%
Huawei MatePad Paper
HiSilicon Kirin 820e, Mali-G57 MP6, 4096
13 fps +348%
Onyx Boox Tab Ultra C Pro
Qualcomm Snapdragon 855, Adreno 640, 6144
13 fps +348%
Average Qualcomm Snapdragon 662
  (2.9 - 9.6, n=13)
6.43 fps +122%
Onyx Boox TabX
Qualcomm Snapdragon 662, Adreno 610, 6144
2.9 fps
Lenovo Smart Paper
Rockchip RK3566, Mali-G52 MP2, 4096
1.9 fps -34%
2560x1440 Aztec Ruins High Tier Offscreen
Onyx Boox Tab Ultra C Pro
Qualcomm Snapdragon 855, Adreno 640, 6144
15 fps +436%
Average of class Tablet
  (0.9 - 90, n=66, last 2 years)
14 fps +400%
Huawei MatePad Paper
HiSilicon Kirin 820e, Mali-G57 MP6, 4096
10 fps +257%
Onyx Boox TabX
Qualcomm Snapdragon 662, Adreno 610, 6144
2.8 fps
Average Qualcomm Snapdragon 662
  (2.5 - 2.9, n=13)
2.78 fps -1%
Lenovo Smart Paper
Rockchip RK3566, Mali-G52 MP2, 4096
1.4 fps -50%
3840x2160 4K Aztec Ruins High Tier Offscreen
Onyx Boox Tab Ultra C Pro
Qualcomm Snapdragon 855, Adreno 640, 6144
6.6 fps +450%
Average of class Tablet
  (0.4 - 48, n=62, last 2 years)
6.38 fps +432%
Huawei MatePad Paper
HiSilicon Kirin 820e, Mali-G57 MP6, 4096
4.8 fps +300%
Onyx Boox TabX
Qualcomm Snapdragon 662, Adreno 610, 6144
1.2 fps
Average Qualcomm Snapdragon 662
  (1.1 - 1.2, n=3)
1.133 fps -6%
Lenovo Smart Paper
Rockchip RK3566, Mali-G52 MP2, 4096
0.6 fps -50%
Octane V2 - Total Score
Onyx Boox Tab Ultra C Pro
Qualcomm Snapdragon 855, Adreno 640, 6144
33918 Points +249%
Average of class Tablet
  (2672 - 74614, n=68, last 2 years)
23123 Points +138%
Huawei MatePad Paper
HiSilicon Kirin 820e, Mali-G57 MP6, 4096
18755 Points +93%
Onyx Boox TabX
Qualcomm Snapdragon 662, Adreno 610, 6144
9714 Points
Average Qualcomm Snapdragon 662
  (8893 - 10247, n=14)
9495 Points -2%
Lenovo Smart Paper
Rockchip RK3566, Mali-G52 MP2, 4096
5022 Points -48%
Onyx Boox TabXOnyx Boox Tab Ultra C ProLenovo Smart PaperHuawei MatePad PaperAverage 128 GB UFS 2.1 FlashAverage of class Tablet
AndroBench 3-5
118%
-54%
65%
59%
119%
Sequential Read 256KB
514.4
1487
189%
163
-68%
880.1
71%
765 ?(427 - 1011, n=111)
49%
825 ?(163 - 3414, n=63, last 2 years)
60%
Sequential Write 256KB
109.5
302.2
176%
139
27%
256.2
134%
293 ?(13.6 - 719, n=111)
168%
524 ?(78.2 - 2528, n=63, last 2 years)
379%
Random Read 4KB
137.8
226.8
65%
25.3
-82%
145.6
6%
152 ?(92.6 - 239, n=111)
10%
163.2 ?(18.4 - 451, n=63, last 2 years)
18%
Random Write 4KB
121.7
169.9
40%
8.8
-93%
183.1
50%
130.2 ?(18.2 - 290, n=111)
7%
146.6 ?(8.23 - 503, n=63, last 2 years)
20%

Temperature

Max. Load
 22.9 °C
73 F
23.6 °C
74 F
23.6 °C
74 F
 
 23.3 °C
74 F
29.2 °C
85 F
24.4 °C
76 F
 
 22.9 °C
73 F
26.5 °C
80 F
24.5 °C
76 F
 
Maximum: 29.2 °C = 85 F
Average: 24.5 °C = 76 F
23.9 °C
75 F
24.7 °C
76 F
24.7 °C
76 F
25.2 °C
77 F
28 °C
82 F
25.3 °C
78 F
25 °C
77 F
26.9 °C
80 F
24.8 °C
77 F
Maximum: 28 °C = 82 F
Average: 25.4 °C = 78 F
Power Supply (max.)  41.2 °C = 106 F | Room Temperature 20.5 °C = 69 F | Fluke t3000FC (calibrated), Voltcraft IR-260
(+) The average temperature for the upper side under maximal load is 24.5 °C / 76 F, compared to the average of 30 °C / 86 F for the devices in the class Tablet.
(+) The maximum temperature on the upper side is 29.2 °C / 85 F, compared to the average of 33.8 °C / 93 F, ranging from 20.7 to 53.2 °C for the class Tablet.
(+) The bottom heats up to a maximum of 28 °C / 82 F, compared to the average of 33.3 °C / 92 F
(+) In idle usage, the average temperature for the upper side is 23.4 °C / 74 F, compared to the device average of 30 °C / 86 F.


Heatmap Front
Heatmap Front
Heatmap Back
Heatmap Back

3DMark Wild Life Stress Test

01234567891011121314151617Tooltip
Onyx Boox TabX Adreno 610, SD 662, 128 GB UFS 2.1 Flash; Wild Life Extreme Stress Test; 1.1.4.1: Ø0.671 (0.662-0.682)
Onyx Boox Tab Ultra C Pro Adreno 640, SD 855, 128 GB UFS 3.1 Flash; Wild Life Extreme Stress Test; 1.1.4.1: Ø4.53 (4.51-4.71)
Lenovo Smart Paper Mali-G52 MP2, RK3566, 64 GB eMMC Flash; Wild Life Extreme Stress Test; 1.1.0.2: Ø0.447 (0.4391-0.4529)
Huawei MatePad Paper Mali-G57 MP6, Kirin 820e, 64 GB UFS 2.2 Flash; Wild Life Extreme Stress Test; 1.0.9.1: Ø3.74 (3.73-3.75)
Onyx Boox TabX Adreno 610, SD 662, 128 GB UFS 2.1 Flash; Wild Life Stress Test Stability; 0.0.0.0: Ø2.27 (2.26-2.27)
Onyx Boox Tab Ultra C Pro Adreno 640, SD 855, 128 GB UFS 3.1 Flash; Wild Life Stress Test Stability; 0.0.0.0: Ø16.1 (15.8-17.5)
Lenovo Smart Paper Mali-G52 MP2, RK3566, 64 GB eMMC Flash; Wild Life Stress Test Stability; 0.0.0.0: Ø1.728 (1.71-1.735)
Huawei MatePad Paper Mali-G57 MP6, Kirin 820e, 64 GB UFS 2.2 Flash; Wild Life Stress Test Stability; 0.0.0.0: Ø11.3 (10.9-11.3)

Speaker

dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2037.233.32530.331.53124.121.54031.428.75037.333.76325.924.48019.518.210016.517.412513.71316013.719.52009.224.12508.323.73156.730.54007375008.845.26308.348.98008.953100010.759.312508.766.516009.169.720009.765.9250010.661.2315011.35440001261.8500012.959.1630013.760.8800014.464.51000015.362.9125001661160001764.5SPL23.975.4N0.530.1median 10.7median 59.1Delta2.715.543.939.334.536.227.729.728.535.633.235.226.334.823.432.422.538.215.443.714.649.612.352.313.357.711.659.77.562.811.467.815.266.814.769.811.872.7127310.376.29.372.310.869.814.767.614.358.914.964.11566.615.46316.856.416.151.91754.225.982.10.750.6median 14.6median 632.17.8hearing rangehide median Pink NoiseOnyx Boox TabXHuawei MatePad Paper
Frequency diagram (checkboxes can be checked and unchecked to compare devices)
Onyx Boox TabX audio analysis

(±) | speaker loudness is average but good (75.4 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 37.7% lower than median
(±) | linearity of bass is average (8.1% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | reduced mids - on average 9.7% lower than median
(±) | linearity of mids is average (11.1% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 3% away from median
(±) | linearity of highs is average (8.7% delta to prev. frequency)
Overall 100 - 16.000 Hz
(-) | overall sound is not linear (31.2% difference to median)
Compared to same class
» 86% of all tested devices in this class were better, 4% similar, 10% worse
» The best had a delta of 7%, average was 23%, worst was 129%
Compared to all devices tested
» 88% of all tested devices were better, 3% similar, 10% worse
» The best had a delta of 4%, average was 25%, worst was 134%

Huawei MatePad Paper audio analysis

(+) | speakers can play relatively loud (82.1 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 12.8% lower than median
(±) | linearity of bass is average (9.4% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 7.2% higher than median
(+) | mids are linear (5.7% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 3.8% away from median
(±) | linearity of highs is average (9.2% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (17.6% difference to median)
Compared to same class
» 35% of all tested devices in this class were better, 7% similar, 59% worse
» The best had a delta of 7%, average was 23%, worst was 129%
Compared to all devices tested
» 29% of all tested devices were better, 8% similar, 63% worse
» The best had a delta of 4%, average was 25%, worst was 134%

Battery life

Battery Runtime - Reader / Idle
Average of class Tablet
  (746 - 5003, n=51, last 2 years)
1934 min +30%
Onyx Boox TabX
6300 mAh
1486 min
Onyx Boox Tab Ultra C Pro
4600 mAh
1244 min
Lenovo Smart Paper
3500 mAh
1056 min
Huawei MatePad Paper
3625 mAh
963 min
Battery Runtime
Idle (without WLAN, min brightness)
24h 46min

Pros

+ good battery life
+ Android-App support
+ precise touchscreen
+ pen input
+ large, matt e-ink display...
+ ...with good readability
+ hardly any heat build-up under load

Cons

- high price
- only mediocre performance
- no charger included
- weak speakers
- slow charging
- no physical scroll buttons
- chassis seems fragile

Verdict - Lots of screen space, but also limitations

In review: Onyx Boox Tab X. Test device provided by:
In review: Onyx Boox Tab X. Test device provided by:
KEX GmbH

The Onyx Boox Tab X is an extraordinary e-ink tablet with a huge screen. Digitizer support and the option to use Android apps make the device even more flexible. The long runtimes are impressive, the device hardly heats up, has a high-quality look, and offers a touchscreen that can be operated precisely.

However, for a price of just under 950 euros, you can expect more in some areas: the SoC and the flash memory used are quite slow, the casing is made of a metal alloy but looks a little fragile, and the battery charging times are very long. A charger is not included in the package, the speakers sound weak, and we miss a microSD slot as well as physical buttons for scrolling and volume control. Other devices also offer faster WLAN.

So there are definitely some points of criticism of the Onyx Boox Tab X. However, if you mainly want to use it for reading documents and taking notes, you will get a tablet that can display a DIN A4 page almost in its original size with high contrast and great readability.

The Onyx Boox Tab X is very large, expensive, and flexible thanks to the Android app support, and lasts a long time. The e-ink tablet is great for studying documents and taking notes, but it also has some weak points.

There are not many other manufacturers who have dared to use this screen size for an e-ink tablet. Most competitors are somewhat smaller at 10.3 inches, while the Onyx Boox Tab Ultra C Pro offers a color screen and significantly more performance for less money. If a black and white panel is enough for you, the Lenovo Smart Paper or the MatePad Paper will save even more money.

Price and availability

The Onyx Boox Tab X is available in stores. At the time of review, Amazon US lists the device for just under $900.

Onyx Boox TabX - 02/04/2024 v7
Florian Schmitt

Chassis
80 / 98 → 82%
Keyboard
65%
Pointing Device
91 / 40-88 → 100%
Connectivity
29%
Weight
82%
Battery
90 / 92 → 98%
Display
72%
Games Performance
14%
Application Performance
42 / 91 → 46%
Temperature
97%
Noise
100%
Audio
52%
Average
68%
79%
Tablet - Weighted Average

Transparency

The present review sample was made available to the author as a loan by the manufacturer or a shop for the purposes of review. The lender had no influence on this review, nor did the manufacturer receive a copy of this review before publication. There was no obligation to publish this review.

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> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > Reviews > Onyx Boox Tab X review - E-Ink tablet for big tasks?
Florian Schmitt, 2024-02- 7 (Update: 2024-02- 7)