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Chuwi UBook CWI509 Tablet Review: The Surface Go Wannabe

Good colors, cheap hardware. Chuwi is at it again with yet another Microsoft Surface clone. This time, the Chinese manufacturer is targeting the Surface Go crowd with an 11.6-inch detachable. The end result has some respectable qualities, but it's a big miss overall.

Whereas the 12.3-inch Chuwi UBook Pro is the Microsoft Surface Pro clone, the 11.6-inch Chuwi UBook is the Microsoft Surface Go clone. The Chinese manufacturer is infamous for its cheap devices and knock-offs ranging from the MacBook Air-like AeroBook to the inexpensive 15.6-inch 4K LapBook Plus laptop. This review will focus on the Chuwi UBook and how it differs from the Surface Go that it's trying to imitate.

The Chuwi UBook can currently be found on Amazon for $340 with its official product page here.

More Chuwi reviews:

Chuwi UBook CWI509 (UBook Series)
Graphics adapter
Intel UHD Graphics 600, DDR4, 26.20.100.7262
Memory
8192 MB 
, DDR4, 1200 MHz, Dual-Channel
Display
11.6 inch 16:9, 1920 x 1080 pixel 190 PPI, 10-point capacitive, native pen support, Panda LC116LF1L01, IPS, glossy: yes, detachable screen
Storage
Netac SSD 256GB, 256 GB 
,
Soundcard
Intel Gemini Lake SoC - High Definition Audio Controller
Connections
3 USB 2.0, 1 USB 3.0 / 3.1 Gen1, 1 HDMI, 1 Docking Station Port, Audio Connections: 3.5 mm combo, Card Reader: MicroSD, Sensors: Accelerometer
Networking
Wireless AC-9461 (ac = Wi-Fi 5), Bluetooth 5
Size
height x width x depth (in mm): 9 x 290.4 x 179.3 ( = 0.35 x 11.43 x 7.06 in)
Battery
26 Wh Lithium-Polymer
Operating System
Microsoft Windows 10 Home 64 Bit
Camera
Primary Camera: 5 MPix
Secondary Camera: 2 MPix
Additional features
Speakers: Stereo, Keyboard: Chiclet, Keyboard Light: no, Wacom Pen, Keyboard dock, 12 Months Warranty, fanless
Weight
810 g ( = 28.57 oz / 1.79 pounds), Power Supply: 190 g ( = 6.7 oz / 0.42 pounds)
Price
340 USD
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

RatingDateModelWeightHeightSizeResolutionBest Price
70%12/2019Chuwi UBook CWI509
N4100, UHD Graphics 600
810 g9 mm11.6"1920x1080
88%11/2019Microsoft Surface Pro 7 Core i5-1035G4
1035G4, Iris Plus Graphics G4 (Ice Lake 48 EU)
775 g8.5 mm12.3"2736x1824
83%10/2018Microsoft Surface Go MHN-00003
4415Y, UHD Graphics 615
523 g8.3 mm10"1800x1200
83%09/2019HP ProBook x360 11 G4
8100Y, UHD Graphics 615
1.4 kg19.9 mm11.6"1366x768
77%12/2018HP x2 210 G2
Z8350, HD Graphics 400 (Braswell)
1.2 kg23.5 mm10.1"1280x800

Case

The chassis is nearly identical to the TrekStor Surftab Theatre S11 and so most of our existing comments apply here on the UBook. Even the dimensions between the two detachables are essentially the same. The main visual difference between them is that the UBook integrates a USB Type-C port while the TrekStor includes none.

Plastic keyboard base, aluminum tablet frame, and glass front
Plastic keyboard base, aluminum tablet frame, and glass front
Tablet chassis is strong while the keyboard base feels flimsy
Tablet chassis is strong while the keyboard base feels flimsy
Smooth plastic palm rests hide fingerprint well
Smooth plastic palm rests hide fingerprint well
Bracket hinges are weak at small angles. In other words, rigidity is uneven depending on the angle
Bracket hinges are weak at small angles. In other words, rigidity is uneven depending on the angle
U-shaped bracket opened to maximum angle
U-shaped bracket opened to maximum angle
Large gap between the crevices on our keyboard detachable due to poor build quality
Large gap between the crevices on our keyboard detachable due to poor build quality
300 mm / 11.8 inch 205.9 mm / 8.11 inch 19.9 mm / 0.783 inch 1.4 kg3.17 lbs292 mm / 11.5 inch 201 mm / 7.91 inch 8.5 mm / 0.3346 inch 775 g1.709 lbs290.4 mm / 11.4 inch 179.3 mm / 7.06 inch 9 mm / 0.3543 inch 810 g1.786 lbs290 mm / 11.4 inch 180 mm / 7.09 inch 9.3 mm / 0.3661 inch 719 g1.585 lbs265 mm / 10.4 inch 183 mm / 7.2 inch 23.5 mm / 0.925 inch 1.2 kg2.65 lbs245 mm / 9.65 inch 175 mm / 6.89 inch 8.3 mm / 0.3268 inch 523 g1.153 lbs

Connectivity

Port options and positioning are identical to the larger UBook Pro. However, attempting to recharge the tablet via USB Type-C will not work unlike on the UBook Pro.

Top: Power button, Volume rocker, MicroSD slot
Top: Power button, Volume rocker, MicroSD slot
Right: AC adapter, Micro HDMI, USB 3.0 Type-A
Right: AC adapter, Micro HDMI, USB 3.0 Type-A
Bottom: Pogo pins
Bottom: Pogo pins
Left: USB 3.0, 3.5 mm headphones
Left: USB 3.0, 3.5 mm headphones

SD Card Reader

Good luck trying to remove that MicroSD card
Good luck trying to remove that MicroSD card

The spring-loaded MicroSD card reader is as fast as the card reader on the Microsoft Surface series. An inserted card, however, can be difficult to remove especially for larger hands.

SDCardreader Transfer Speed
average JPG Copy Test (av. of 3 runs)
HP ProBook x360 11 G4
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
75.5 MB/s ∼100% +9%
Microsoft Surface Pro 7 Core i5-1035G4
  (Toshiba Exceria Pro M501 64 GB UHS-II)
73 MB/s ∼97% +5%
Chuwi UBook CWI509
  (Toshiba Exceria Pro M501 64 GB UHS-II)
69.4 MB/s ∼92%
Microsoft Surface Go MHN-00003
  (Toshiba Exceria Pro M501)
67.8 MB/s ∼90% -2%
HP x2 210 G2
  (Toshiba Exceria Pro M501 microSDXC 64GB)
48 MB/s ∼64% -31%
maximum AS SSD Seq Read Test (1GB)
HP ProBook x360 11 G4
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
85.9 MB/s ∼100% +4%
Microsoft Surface Pro 7 Core i5-1035G4
  (Toshiba Exceria Pro M501 64 GB UHS-II)
85.07 MB/s ∼99% +3%
Microsoft Surface Go MHN-00003
  (Toshiba Exceria Pro M501)
84.9 MB/s ∼99% +3%
Chuwi UBook CWI509
  (Toshiba Exceria Pro M501 64 GB UHS-II)
82.4 MB/s ∼96%
HP x2 210 G2
  (Toshiba Exceria Pro M501 microSDXC 64GB)
76.4 MB/s ∼89% -7%

Communication

The Intel 9461 is a 1x1 (433 Mbps) 802.11ac module providing half the transfer rates of most Ultrabooks today. It works reliably on our unit and it balances well with the entry-level package.

Networking
iperf3 Client (receive) TCP 1 m 4M x10
HP ProBook x360 11 G4
Intel Wireless-AC 9260
600 (min: 445, max: 675) MBit/s ∼100% +53%
Microsoft Surface Go MHN-00003
Qualcomm Atheros QCA61x4
581 MBit/s ∼97% +49%
HP x2 210 G2
Intel Dual Band Wireless-AC 7265
448 (min: 399, max: 476) MBit/s ∼75% +15%
Chuwi UBook CWI509
Wireless AC-9461
391 MBit/s ∼65%
Trekstor Surftab Theatre S11
802.11a/b/g/n
93 (min: 82, max: 98) MBit/s ∼16% -76%
iperf3 Client (transmit) TCP 1 m 4M x10
HP ProBook x360 11 G4
Intel Wireless-AC 9260
578 (min: 538, max: 619) MBit/s ∼100% +63%
HP x2 210 G2
Intel Dual Band Wireless-AC 7265
483 (min: 364, max: 559) MBit/s ∼84% +36%
Microsoft Surface Go MHN-00003
Qualcomm Atheros QCA61x4
476 MBit/s ∼82% +34%
Chuwi UBook CWI509
Wireless AC-9461
355 MBit/s ∼61%
Trekstor Surftab Theatre S11
802.11a/b/g/n
82 (min: 71, max: 89) MBit/s ∼14% -77%

Accessories and Warranty

Extras include the keyboard base, active HiPen H3 stylus, and a AAAA battery. 

The standard one-year limited warranty applies. Keep in mind that return shipping will likely be overseas for a slow turnaround time.

Input Devices

Keyboard

The typing experience is decent with loud clatter and relatively firm key feedback. The keyboard deck, however, tends to flex a bit with each key press meaning that the center keys can feel a bit softer than the edge and corner keys. More uniform feedback would have been ideal.

Touchpad

The clickpad is disappointing. Not only is it very small (~8.8 x 4 cm), but its gliding properties are sticky and jumpy when moving the cursor at slow speeds. Thus, precision clicks are difficult with the clickpad. Furthermore, the integrated mouse keys are both very shallow and difficult to press for an overall frustrating experience.

Standard keyboard layout with no backlight options
Standard keyboard layout with no backlight options
Small clickpad feels horrible to use and it is not Precision enabled
Small clickpad feels horrible to use and it is not Precision enabled
Keys will clatter quite loudly when typing
Keys will clatter quite loudly when typing
Cramped and spongy Arrow keys
Cramped and spongy Arrow keys
Chuwi fail — the pen loop on the detachable keyboard is too small for the included WACOM pen
Chuwi fail — the pen loop on the detachable keyboard is too small for the included WACOM pen

Display

The UBook uses the exact same Panda LC116LF1L01 IPS panel as found on last year's Trekstor Yourbook C11B convertible. Thus, these two systems share similar attributes including color coverage, response times, and contrast ratio. It's a decent mid-range panel considering the low entry price of the tablet. The display on the pricier Surface Pro 7 is two times brighter with two times the contrast ratio.

Picture is slightly on the grainy side despite the glossy overlay due to the thick glass layer. Uneven backlight bleeding is also noticeable during a cold boot or when viewing videos with black borders.

Edge-to-edge glass touchscreen suffers from low brightness
Edge-to-edge glass touchscreen suffers from low brightness
Thick bezels all around
Thick bezels all around
Subpixel array. Note the glass overlay obscuring the pixels
Subpixel array. Note the glass overlay obscuring the pixels
Heavy uneven backlight bleeding along the edges and corners
Heavy uneven backlight bleeding along the edges and corners
213.2
cd/m²
221.2
cd/m²
222.6
cd/m²
210.9
cd/m²
235.6
cd/m²
223.2
cd/m²
206.8
cd/m²
222.6
cd/m²
219.7
cd/m²
Distribution of brightness
Panda LC116LF1L01
X-Rite i1Pro 2
Maximum: 235.6 cd/m² Average: 219.5 cd/m² Minimum: 18.6 cd/m²
Brightness Distribution: 88 %
Center on Battery: 235.6 cd/m²
Contrast: 589:1 (Black: 0.4 cd/m²)
ΔE Color 8.9 | 0.6-29.43 Ø6, calibrated: 1.85
ΔE Greyscale 11.9 | 0.64-98 Ø6.2
93.8% sRGB (Argyll 3D) 59.5% AdobeRGB 1998 (Argyll 3D)
Gamma: 2.07
Chuwi UBook CWI509
Panda LC116LF1L01, IPS, 11.6, 1920x1080
Microsoft Surface Pro 7 Core i5-1035G4
LG Philips LP123WQ112604, IPS, 12.3, 2736x1824
Microsoft Surface Go MHN-00003
Sharp SHP14A6, IPS, 10, 1800x1200
HP ProBook x360 11 G4
AU Optronics AUO405C, IPS, 11.6, 1366x768
Trekstor Surftab Theatre S11
IPS, 11.6, 1920x1080
HP x2 210 G2
AU Optronics AUO18D4, IPS, 10.1, 1280x800
Response Times
44%
-32%
3%
33%
-22%
Response Time Grey 50% / Grey 80% *
38 (16.4, 21.6)
34.8 (16.8, 18)
8%
44 (22, 22)
-16%
40 (19, 21)
-5%
48.8 (25.2, 23.6)
-28%
46 (22, 24)
-21%
Response Time Black / White *
28.8 (15.6, 13.2)
26.4 (13.2, 13.2)
8%
25.6 (11.6, 14)
11%
26 (15, 11)
10%
37 (20.8, 16.4)
-28%
35 (18, 17)
-22%
PWM Frequency
10000 (25)
21550 (24)
116%
1020 (99)
-90%
25510 (71)
155%
Screen
36%
60%
25%
29%
25%
Brightness middle
235.6
480.4
104%
456
94%
211
-10%
245
4%
292
24%
Brightness
220
485
120%
426
94%
211
-4%
231
5%
275
25%
Brightness Distribution
88
91
3%
88
0%
88
0%
87
-1%
82
-7%
Black Level *
0.4
0.48
-20%
0.31
22%
0.15
62%
0.25
37%
0.17
57%
Contrast
589
1001
70%
1471
150%
1407
139%
980
66%
1718
192%
Colorchecker DeltaE2000 *
8.9
5
44%
1.3
85%
4.32
51%
5.2
42%
6.76
24%
Colorchecker DeltaE2000 max. *
16.83
7.72
54%
3
82%
18.44
-10%
10.8
36%
24.45
-45%
Colorchecker DeltaE2000 calibrated *
1.85
2.44
-32%
1.1
41%
Greyscale DeltaE2000 *
11.9
5.9
50%
1.4
88%
2.39
80%
7.3
39%
6.01
49%
Gamma
2.07 106%
2.38 92%
2.24 98%
2.38 92%
2.24 98%
2.26 97%
CCT
11176 58%
7805 83%
6687 97%
6815 95%
7496 87%
6749 96%
Color Space (Percent of AdobeRGB 1998)
59.5
60.3
1%
62.3
5%
42
-29%
40
-33%
Color Space (Percent of sRGB)
93.8
93.2
-1%
96.8
3%
65
-31%
63
-33%
Total Average (Program / Settings)
40% / 38%
14% / 41%
14% / 21%
31% / 30%
2% / 18%

* ... smaller is better

Color space covers nearly 95 percent of sRGB to be surprisingly similar to even the 2019 Microsoft Surface Pro. The competing HP ProBook x360 11 G4 utilizes a cheaper AU Optronics panel with a narrower gamut.

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

X-Rite colorimeter measurements show a very poorly calibrated display out of the box with an overly cool color temperature of 11176 and a high average grayscale deltaE value of 11.6. Nonetheless, the wide color gamut of the panel as mentioned above means that the display is capable of much more accurate colors if properly calibrated. Colors and grayscale improve dramatically after calibrating the panel ourselves and so we recommend an end-user calibration if possible to get the most out of the tablet. Owners can also apply our calibrated ICM profile above.

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

Display Response Times

Display response times show how fast the screen is able to change from one color to the next. Slow response times can lead to afterimages and can cause moving objects to appear blurry (ghosting). Gamers of fast-paced 3D titles should pay special attention to fast response times.
       Response Time Black to White
28.8 ms ... rise ↗ and fall ↘ combined↗ 15.6 ms rise
↘ 13.2 ms fall
The screen shows relatively slow response rates in our tests and may be too slow for gamers.
In comparison, all tested devices range from 0.8 (minimum) to 240 (maximum) ms. » 66 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (24.9 ms).
       Response Time 50% Grey to 80% Grey
38 ms ... rise ↗ and fall ↘ combined↗ 16.4 ms rise
↘ 21.6 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. » 37 % of all devices are better.
This means that the measured response time is similar to the average of all tested devices (39.6 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 detected 10000 Hz ≤ 25 % brightness setting

The display backlight flickers at 10000 Hz (Likely utilizing PWM) Flickering detected at a brightness setting of 25 % and below. There should be no flickering or PWM above this brightness setting.

The frequency of 10000 Hz is quite high, so most users sensitive to PWM should not notice any flickering.

In comparison: 51 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 13539 (minimum: 43 - maximum: 2500000) Hz was measured.

Outdoor visibility is poor because of the dim backlight and glossy screen. The wide viewing angles can only do so much to mitigate the inevitable glare in an outdoor scenario.

Outdoors under sunlight
Outdoors under sunlight
Outdoors under shade
Outdoors under shade
Outdoors under sunlight
Outdoors under sunlight
Wide IPS viewing angles. Contrast and colors degrade if viewing from extreme angles
Wide IPS viewing angles. Contrast and colors degrade if viewing from extreme angles

Performance

Chuwi offers no other SKUs at the moment other than the Gemini Lake Celeron N4100 CPU. This passively-cooled processor is a step down from the Core m3-6Y30 which is considered one of the Intel's slowest Core CPUs from the Skylake family. Chuwi uses the same Celeron CPU for its GBox mini PC as well.

LatencyMon shows DPC latency issues regardless of wireless activity.

Processor

CPU performance is essentially the same as the Pentium Gold 4415Y as found on the Surface Go. The newer and more efficient Amber Lake-Y Core m3-8100Y is able to consistently outperform our Celeron while at a lower TDP (6 W vs. 5 W).

Running CineBench R15 in a loop results in consistent scores throughout to suggest no significant Turbo Boost potential as expected from a passively-cooled CPU. See our dedicated page on the Celeron N4100 for more technical information and benchmarks.

CineBench R15
CineBench R15
CineBench R20
CineBench R20
0102030405060708090100110120130140150160170180Tooltip
Chuwi UBook CWI509 UHD Graphics 600, N4100, Netac SSD 256GB; CPU Multi 64Bit: Ø174 (172.96-175.02)
Microsoft Surface Go MHN-00003 UHD Graphics 615, 4415Y, 64 GB eMMC Flash; CPU Multi 64Bit: Ø163 (162.13-163.67)
HP x2 210 G2 HD Graphics 400 (Braswell), Z8350, 64 GB eMMC Flash; CPU Multi 64Bit: Ø96.1 (93.86-96.75)
Chuwi LapBook Plus HD Graphics 505, x7-E3950, Kimtigo KT256GM28S3; CPU Multi 64Bit: Ø124 (124.01-124.67)
Cinebench R15
CPU Single 64Bit
Microsoft Surface Pro 7 Core i5-1035G4
Intel Core i5-1035G4
172 Points ∼79% +157%
Schenker Slim 15 L19
Intel Core i5-10210U
172 Points ∼79% +157%
Acer Swift 3 SF313-51-59SZ
Intel Core i5-8250U
143 Points ∼66% +113%
HP ProBook x360 11 G4
Intel Core m3-8100Y
97 Points ∼44% +45%
Apple MacBook 12 (Early 2016) 1.1 GHz
Intel Core m3-6Y30
91 Points ∼42% +36%
Apple MacBook 12 (Early 2016) 1.1 GHz
Intel Core m3-6Y30
90 Points ∼41% +34%
Average Intel Celeron N4100
  (62 - 71, n=8)
68 Points ∼31% +1%
Chuwi UBook CWI509
Intel Celeron N4100
67 Points ∼31%
Microsoft Surface Go MHN-00003
Intel Pentium Gold 4415Y
65 Points ∼30% -3%
Chuwi LapBook Plus
Intel Atom x7-E3950
41 Points ∼19% -39%
HP x2 210 G2
Intel Atom x5-Z8350
28 Points ∼13% -58%
CPU Multi 64Bit
Schenker Slim 15 L19
Intel Core i5-10210U
744 Points ∼17% +325%
Microsoft Surface Pro 7 Core i5-1035G4
Intel Core i5-1035G4
644 Points ∼15% +268%
Acer Swift 3 SF313-51-59SZ
Intel Core i5-8250U
576 Points ∼13% +229%
Apple MacBook 12 (Early 2016) 1.1 GHz
Intel Core m3-6Y30
218 Points ∼5% +25%
Average Intel Celeron N4100
  (161 - 254, n=8)
201 Points ∼5% +15%
HP ProBook x360 11 G4
Intel Core m3-8100Y
197 Points ∼5% +13%
Chuwi UBook CWI509
Intel Celeron N4100
175 Points ∼4%
Microsoft Surface Go MHN-00003
Intel Pentium Gold 4415Y
164 Points ∼4% -6%
Chuwi LapBook Plus
Intel Atom x7-E3950
125 Points ∼3% -29%
HP x2 210 G2
Intel Atom x5-Z8350
97 Points ∼2% -45%
Cinebench R20
CPU (Single Core)
Microsoft Surface Pro 7 Core i5-1035G4
Intel Core i5-1035G4
441 Points ∼86% +190%
HP ProBook x360 11 G4
Intel Core m3-8100Y
232 Points ∼45% +53%
Chuwi UBook CWI509
Intel Celeron N4100
152 Points ∼30%
Average Intel Celeron N4100
  (151 - 153, n=3)
152 Points ∼30% 0%
Chuwi LapBook Plus
Intel Atom x7-E3950
93 Points ∼18% -39%
CPU (Multi Core)
Microsoft Surface Pro 7 Core i5-1035G4
Intel Core i5-1035G4
1410 Points ∼16% +265%
Average Intel Celeron N4100
  (368 - 560, n=3)
438 Points ∼5% +13%
HP ProBook x360 11 G4
Intel Core m3-8100Y
413 Points ∼5% +7%
Chuwi UBook CWI509
Intel Celeron N4100
386 Points ∼4%
Chuwi LapBook Plus
Intel Atom x7-E3950
272 Points ∼3% -30%
Cinebench R15 CPU Single 64Bit
67 Points
Cinebench R15 CPU Multi 64Bit
175 Points
Cinebench R15 OpenGL 64Bit
12.18 fps
Cinebench R15 Ref. Match 64Bit
97.8 %
Help

System Performance

PCMark benchmarks are where we expect them to be albeit still consistently below the average Celeron N4100 by just a few percentage points. We didn't experience any software issues during our time with the unit and we can appreciate the lack of bloatware as well.

PCMark 10 Standard
PCMark 10 Standard
PCMark 8 Home Accelerated
PCMark 8 Home Accelerated
PCMark 8 Work Accelerated
PCMark 8 Work Accelerated
PCMark 10
Digital Content Creation
Microsoft Surface Pro 7 Core i5-1035G4
Iris Plus Graphics G4 (Ice Lake 48 EU), 1035G4, Toshiba BG4 KBG40ZPZ256G
3315 Points ∼26% +252%
HP ProBook x360 11 G4
UHD Graphics 615, 8100Y, WDC PC SN520 SDAPNUW-256G
1490 Points ∼12% +58%
Average Intel Celeron N4100, Intel UHD Graphics 600
  (943 - 1237, n=6)
1017 Points ∼8% +8%
Chuwi UBook CWI509
UHD Graphics 600, N4100, Netac SSD 256GB
943 Points ∼7%
HP x2 210 G2
HD Graphics 400 (Braswell), Z8350, 64 GB eMMC Flash
605 Points ∼5% -36%
Productivity
Microsoft Surface Pro 7 Core i5-1035G4
Iris Plus Graphics G4 (Ice Lake 48 EU), 1035G4, Toshiba BG4 KBG40ZPZ256G
6678 Points ∼64% +145%
HP ProBook x360 11 G4
UHD Graphics 615, 8100Y, WDC PC SN520 SDAPNUW-256G
4817 Points ∼46% +77%
Average Intel Celeron N4100, Intel UHD Graphics 600
  (2567 - 2993, n=6)
2819 Points ∼27% +3%
Chuwi UBook CWI509
UHD Graphics 600, N4100, Netac SSD 256GB
2724 Points ∼26%
HP x2 210 G2
HD Graphics 400 (Braswell), Z8350, 64 GB eMMC Flash
1121 Points ∼11% -59%
Essentials
Microsoft Surface Pro 7 Core i5-1035G4
Iris Plus Graphics G4 (Ice Lake 48 EU), 1035G4, Toshiba BG4 KBG40ZPZ256G
8847 Points ∼77% +94%
HP ProBook x360 11 G4
UHD Graphics 615, 8100Y, WDC PC SN520 SDAPNUW-256G
5843 Points ∼51% +28%
Chuwi UBook CWI509
UHD Graphics 600, N4100, Netac SSD 256GB
4559 Points ∼40%
Average Intel Celeron N4100, Intel UHD Graphics 600
  (3776 - 5199, n=6)
4354 Points ∼38% -4%
HP x2 210 G2
HD Graphics 400 (Braswell), Z8350, 64 GB eMMC Flash
2662 Points ∼23% -42%
Score
Microsoft Surface Pro 7 Core i5-1035G4
Iris Plus Graphics G4 (Ice Lake 48 EU), 1035G4, Toshiba BG4 KBG40ZPZ256G
4163 Points ∼51% +156%
HP ProBook x360 11 G4
UHD Graphics 615, 8100Y, WDC PC SN520 SDAPNUW-256G
2490 Points ∼31% +53%
Average Intel Celeron N4100, Intel UHD Graphics 600
  (1502 - 1920, n=6)
1661 Points ∼20% +2%
Chuwi UBook CWI509
UHD Graphics 600, N4100, Netac SSD 256GB
1627 Points ∼20%
HP x2 210 G2
HD Graphics 400 (Braswell), Z8350, 64 GB eMMC Flash
872 Points ∼11% -46%
PCMark 8
Work Score Accelerated v2
Microsoft Surface Pro 7 Core i5-1035G4
Iris Plus Graphics G4 (Ice Lake 48 EU), 1035G4, Toshiba BG4 KBG40ZPZ256G
4639 Points ∼70% +58%
HP ProBook x360 11 G4
UHD Graphics 615, 8100Y, WDC PC SN520 SDAPNUW-256G
4014 Points ∼61% +37%
Average Intel Celeron N4100, Intel UHD Graphics 600
  (2858 - 3191, n=5)
2995 Points ∼45% +2%
Chuwi UBook CWI509
UHD Graphics 600, N4100, Netac SSD 256GB
2940 Points ∼45%
HP x2 210 G2
HD Graphics 400 (Braswell), Z8350, 64 GB eMMC Flash
1220 Points ∼19% -59%
Home Score Accelerated v2
Microsoft Surface Pro 7 Core i5-1035G4
Iris Plus Graphics G4 (Ice Lake 48 EU), 1035G4, Toshiba BG4 KBG40ZPZ256G
3537 Points ∼58% +100%
HP ProBook x360 11 G4
UHD Graphics 615, 8100Y, WDC PC SN520 SDAPNUW-256G
2459 Points ∼40% +39%
Average Intel Celeron N4100, Intel UHD Graphics 600
  (1765 - 2259, n=8)
1965 Points ∼32% +11%
Chuwi UBook CWI509
UHD Graphics 600, N4100, Netac SSD 256GB
1765 Points ∼29%
HP x2 210 G2
HD Graphics 400 (Braswell), Z8350, 64 GB eMMC Flash
1546 Points ∼25% -12%
Microsoft Surface Go MHN-00003
UHD Graphics 615, 4415Y, 64 GB eMMC Flash
741 Points ∼12% -58%
PCMark 8 Home Score Accelerated v2
1765 points
PCMark 8 Work Score Accelerated v2
2940 points
Help

Storage Devices

The tablet uses the same 256 GB Netac SSD as found on the Chuwi AeroBook 13. However, transfer rates are much slower on the tablet likely because of the slower SATA interface of the UBook.

CDM 5.5
CDM 5.5
AS SSD
AS SSD
Chuwi UBook CWI509
Netac SSD 256GB
Microsoft Surface Pro 7 Core i5-1035G4
Toshiba BG4 KBG40ZPZ256G
Microsoft Surface Go MHN-00003
64 GB eMMC Flash
HP ProBook x360 11 G4
WDC PC SN520 SDAPNUW-256G
HP x2 210 G2
64 GB eMMC Flash
CrystalDiskMark 5.2 / 6
440%
-1%
278%
-31%
Write 4K
63.24
118.5
87%
26.91
-57%
81.69
29%
18.11
-71%
Read 4K
5.317
54.06
917%
19.72
271%
34.41
547%
15.77
197%
Write Seq
229.6
1166
408%
126.2
-45%
1167
408%
62.49
-73%
Read Seq
256.7
1676
553%
268
4%
1223
376%
121.8
-53%
Write 4K Q32T1
134.7
330.5
145%
62.89
-53%
293.4
118%
31.72
-76%
Read 4K Q32T1
155
393.1
154%
39.82
-74%
230.6
49%
48.64
-69%
Write Seq Q32T1
258.2
1569
508%
131.3
-49%
727.6
182%
95.63
-63%
Read Seq Q32T1
282.7
2390
745%
259.3
-8%
1729
512%
166.5
-41%
Netac SSD 256GB
CDM 5/6 Read Seq Q32T1: 282.7 MB/s
CDM 5/6 Write Seq Q32T1: 258.2 MB/s
CDM 5/6 Read 4K Q32T1: 155 MB/s
CDM 5/6 Write 4K Q32T1: 134.7 MB/s
CDM 5 Read Seq: 256.7 MB/s
CDM 5 Write Seq: 229.6 MB/s
CDM 5/6 Read 4K: 5.317 MB/s
CDM 5/6 Write 4K: 63.24 MB/s

GPU Performance

Graphics performance is slower than expected when compared to other systems with the same integrated UHD Graphics 600 GPU. 3DMark results are 10 to 27 percent behind the average UHD Graphics 600 in our database to be slower than the already slow UHD Graphics 615 on the Surface Go. This is in contrast to their nearly identical CPU performances as mentioned in our CPU section above. Even so, 1080p and 4K UHD video playback is smooth which is what most users will be using the tablet for.

See our UHD Graphics 600 page for more technical information and benchmarks.

Ice Storm
Ice Storm
Ice Storm Extreme
Ice Storm Extreme
Ice Storm Unlimited
Ice Storm Unlimited
Cloud Gate
Cloud Gate
Fire Strike
Fire Strike
Time Spy
Time Spy
3DMark
1920x1080 Fire Strike Graphics
Schenker Slim 15 L19
Intel UHD Graphics 620, i5-10210U
1280 Points ∼3% +245%
Acer Swift 3 SF313-51-59SZ
Intel UHD Graphics 620, 8250U
1225 Points ∼3% +230%
Microsoft Surface Go MHN-00003
Intel UHD Graphics 615, 4415Y
819 Points ∼2% +121%
HP ProBook x360 11 G4
Intel UHD Graphics 615, 8100Y
742 Points ∼2% +100%
Apple MacBook 12 (Early 2016) 1.1 GHz
Intel HD Graphics 515, 6Y30
735 Points ∼2% +98%
Average Intel UHD Graphics 600
  (371 - 484, n=4)
433 Points ∼1% +17%
Chuwi UBook CWI509
Intel UHD Graphics 600, N4100
371 Points ∼1%
HP x2 210 G2
Intel HD Graphics 400 (Braswell), Z8350
234 Points ∼1% -37%
1280x720 Cloud Gate Standard Graphics
Schenker Slim 15 L19
Intel UHD Graphics 620, i5-10210U
10047 Points ∼5% +229%
Acer Swift 3 SF313-51-59SZ
Intel UHD Graphics 620, 8250U
9974 Points ∼5% +226%
Microsoft Surface Go MHN-00003
Intel UHD Graphics 615, 4415Y
6602 Points ∼3% +116%
Apple MacBook 12 (Early 2016) 1.1 GHz
Intel HD Graphics 515, 6Y30
6078 Points ∼3% +99%
HP ProBook x360 11 G4
Intel UHD Graphics 615, 8100Y
5543 Points ∼3% +81%
Average Intel UHD Graphics 600
  (2826 - 3869, n=6)
3407 Points ∼2% +11%
Chuwi UBook CWI509
Intel UHD Graphics 600, N4100
3057 Points ∼2%
HP x2 210 G2
Intel HD Graphics 400 (Braswell), Z8350
1841 Points ∼1% -40%
1920x1080 Ice Storm Extreme Graphics
Acer Swift 3 SF313-51-59SZ
Intel UHD Graphics 620, 8250U
54599 Points ∼7% +369%
Microsoft Surface Go MHN-00003
Intel UHD Graphics 615, 4415Y
35452 Points ∼5% +204%
HP ProBook x360 11 G4
Intel UHD Graphics 615, 8100Y
23728 Points ∼3% +104%
Average Intel UHD Graphics 600
  (11647 - 16594, n=5)
14234 Points ∼2% +22%
Chuwi UBook CWI509
Intel UHD Graphics 600, N4100
11647 Points ∼2%
3DMark 11
1280x720 Performance Combined
Microsoft Surface Pro 7 Core i5-1035G4
Intel Iris Plus Graphics G4 (Ice Lake 48 EU), 1035G4
2739 Points ∼12% +586%
Schenker Slim 15 L19
Intel UHD Graphics 620, i5-10210U
1789 Points ∼8% +348%
Acer Swift 3 SF313-51-59SZ
Intel UHD Graphics 620, 8250U
1653 Points ∼7% +314%
Microsoft Surface Go MHN-00003
Intel UHD Graphics 615, 4415Y
1134 Points ∼5% +184%
HP ProBook x360 11 G4
Intel UHD Graphics 615, 8100Y
1015 Points ∼4% +154%
Apple MacBook 12 (Early 2016) 1.1 GHz
Intel HD Graphics 515, 6Y30
1014 Points ∼4% +154%
Average Intel UHD Graphics 600
  (399 - 791, n=11)
548 Points ∼2% +37%
Chuwi UBook CWI509
Intel UHD Graphics 600, N4100
399 Points ∼2%
HP x2 210 G2
Intel HD Graphics 400 (Braswell), Z8350
392 Points ∼2% -2%
1280x720 Performance GPU
Microsoft Surface Pro 7 Core i5-1035G4
Intel Iris Plus Graphics G4 (Ice Lake 48 EU), 1035G4
3228 Points ∼6% +652%
Schenker Slim 15 L19
Intel UHD Graphics 620, i5-10210U
1829 Points ∼4% +326%
Acer Swift 3 SF313-51-59SZ
Intel UHD Graphics 620, 8250U
1818 Points ∼4% +324%
Microsoft Surface Go MHN-00003
Intel UHD Graphics 615, 4415Y
1257 Points ∼2% +193%
Apple MacBook 12 (Early 2016) 1.1 GHz
Intel HD Graphics 515, 6Y30
1186 Points ∼2% +176%
HP ProBook x360 11 G4
Intel UHD Graphics 615, 8100Y
1111 Points ∼2% +159%
Average Intel UHD Graphics 600
  (429 - 638, n=11)
543 Points ∼1% +27%
Chuwi UBook CWI509
Intel UHD Graphics 600, N4100
429 Points ∼1%
HP x2 210 G2
Intel HD Graphics 400 (Braswell), Z8350
349 Points ∼1% -19%
3DMark 11 Performance
482 points
3DMark Ice Storm Standard Score
19808 points
3DMark Cloud Gate Standard Score
2628 points
3DMark Fire Strike Score
346 points
3DMark Time Spy Score
113 points
Help
BioShock Infinite
1366x768 Medium Preset
Microsoft Surface Pro 7 Core i5-1035G4
Intel Core i5-1035G4, Intel Iris Plus Graphics G4 (Ice Lake 48 EU)
50.8 fps ∼100% +464%
Acer Swift 3 SF313-51-59SZ
Intel Core i5-8250U, Intel UHD Graphics 620
37.5 fps ∼74% +317%
Microsoft Surface Go MHN-00003
Intel Pentium Gold 4415Y, Intel UHD Graphics 615
22.4 fps ∼44% +149%
HP ProBook x360 11 G4
Intel Core m3-8100Y, Intel UHD Graphics 615
18.1 fps ∼36% +101%
Average Intel UHD Graphics 600
  (9 - 13.3, n=6)
10.8 fps ∼21% +20%
Chuwi UBook CWI509
Intel Celeron N4100, Intel UHD Graphics 600
9 fps ∼18%
1280x720 Very Low Preset
Microsoft Surface Pro 7 Core i5-1035G4
Intel Core i5-1035G4, Intel Iris Plus Graphics G4 (Ice Lake 48 EU)
87.3 fps ∼100% +364%
Acer Swift 3 SF313-51-59SZ
Intel Core i5-8250U, Intel UHD Graphics 620
68.2 fps ∼78% +263%
Microsoft Surface Go MHN-00003
Intel Pentium Gold 4415Y, Intel UHD Graphics 615
38.3 fps ∼44% +104%
HP ProBook x360 11 G4
Intel Core m3-8100Y, Intel UHD Graphics 615
31.1 fps ∼36% +65%
Average Intel UHD Graphics 600
  (18.8 - 28.3, n=7)
22.7 fps ∼26% +21%
Chuwi UBook CWI509
Intel Celeron N4100, Intel UHD Graphics 600
18.8 fps ∼22%
HP x2 210 G2
Intel Atom x5-Z8350, Intel HD Graphics 400 (Braswell)
16.9 fps ∼19% -10%
low med. high ultra
BioShock Infinite (2013) 18.8 9 8 2 fps

Emissions

Temperature

Surface temperatures are warmest towards the top right corner where the power adapter port is located. Thus, the right half of the tablet will always be warmer than the left. We're able to record a hot spot approaching 37 C when running Prime95 to stress the system.

Max. Load
 22.4 °C
72 F
28.6 °C
83 F
34.8 °C
95 F
 
 23.2 °C
74 F
26.8 °C
80 F
33 °C
91 F
 
 27.6 °C
82 F
27 °C
81 F
28.8 °C
84 F
 
Maximum: 34.8 °C = 95 F
Average: 28 °C = 82 F
36.4 °C
98 F
30.2 °C
86 F
26.2 °C
79 F
34.2 °C
94 F
29.8 °C
86 F
26.6 °C
80 F
32.2 °C
90 F
29 °C
84 F
27 °C
81 F
Maximum: 36.4 °C = 98 F
Average: 30.2 °C = 86 F
Power Supply (max.)  32 °C = 90 F | Room Temperature 20 °C = 68 F | Fluke 62 Mini IR Thermometer
(+) The average temperature for the upper side under maximal load is 28 °C / 82 F, compared to the average of 30.3 °C / 87 F for the devices in the class Convertible.
(+) The maximum temperature on the upper side is 34.8 °C / 95 F, compared to the average of 35.3 °C / 96 F, ranging from 21.8 to 55.7 °C for the class Convertible.
(+) The bottom heats up to a maximum of 36.4 °C / 98 F, compared to the average of 36.5 °C / 98 F
(+) In idle usage, the average temperature for the upper side is 25.1 °C / 77 F, compared to the device average of 30.3 °C / 87 F.
(+) The palmrests and touchpad are cooler than skin temperature with a maximum of 28.8 °C / 83.8 F and are therefore cool to the touch.
(±) The average temperature of the palmrest area of similar devices was 28.9 °C / 84 F (+0.1 °C / 0.2 F).
System idle (front)
System idle (front)
System idle (back)
System idle (back)
Prime95 stress (top)
Prime95 stress (top)
Prime95 stress (bottom)
Prime95 stress (bottom)

Stress Test

Running Prime95 will boost the CPU clock rate to 2.3 GHz for just a couple of seconds before falling and stabilizing at 1.5 GHz and 61 C. This observation matches our Power Consumption readings below.

Running on battery power will limit graphics performance just slightly. A Cloud Gate test on batteries returns Physics and Graphics scores of 1773 and 2710 points, respectively, compared to 1763 and 3057 points when on mains.

System idle
System idle
Prime95 stress
Prime95 stress
Prime95+FurMark stress
Prime95+FurMark stress
CPU Clock (GHz) GPU Clock (MHz) Average CPU Temperature (°C)
System Idle -- -- 31
Prime95 Stress 1.5 -- 61
Prime95 + FurMark Stress 1.0 - 1.3 -- 62

Speakers

The stereo speakers are both low in volume with weak bass. Roll-off begins at around 1 kHz compared to 250 Hz or 500 Hz on most laptops.

Pink noise at maximum volume
Pink noise at maximum volume
dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2038.238.638.22537.736.837.73136.135.836.14036.935.336.95034.934.534.96339.735.539.78033.232.633.210032.732.232.71253332.23316032.832.232.820035.333.735.325033.430.733.431536.330.536.340041.129.641.150042.428.842.463047.828.647.880052.828.152.8100060.728.160.7125059.827.959.8160057.727.757.7200053.627.453.625005427.55431505327.653400053.427.453.4500053.127.453.1630054.327.454.3800058.227.358.21000054.627.254.61250050.327.250.31600035.92735.9SPL67.74067.7N21.23.821.2median 52.8median 27.9median 52.8Delta7.61.67.635.335.132.931.831.83236.535.132.428.93328.936.328.848.32761.52752.924.860.92462.822.763.32269.521.267.82174.82075.919.472.718.97117.770.117.86917.671.817.668.117.671.417.673.717.670.417.571.617.671.617.669.617.459.717.583.630.662.51.5median 69.6median 17.84.62.4hearing rangehide median Pink NoiseChuwi UBook CWI509Apple MacBook 12 (Early 2016) 1.1 GHz
Frequency diagram (checkboxes can be checked and unchecked to compare devices)
Chuwi UBook CWI509 audio analysis

(-) | not very loud speakers (67.7 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 18.9% lower than median
(+) | bass is linear (5.5% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | reduced mids - on average 6% lower than median
(-) | mids are not linear (15.7% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 1.5% away from median
(+) | highs are linear (6.3% delta to prev. frequency)
Overall 100 - 16.000 Hz
(-) | overall sound is not linear (33.4% difference to median)
Compared to same class
» 90% of all tested devices in this class were better, 3% similar, 6% worse
» The best had a delta of 11%, average was 22%, worst was 53%
Compared to all devices tested
» 94% of all tested devices were better, 2% similar, 4% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Apple MacBook 12 (Early 2016) 1.1 GHz audio analysis

(+) | speakers can play relatively loud (83.6 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 11.3% lower than median
(±) | linearity of bass is average (14.2% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 2.4% away from median
(+) | mids are linear (5.5% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2% away from median
(+) | highs are linear (4.5% delta to prev. frequency)
Overall 100 - 16.000 Hz
(+) | overall sound is linear (9.3% difference to median)
Compared to same class
» 1% of all tested devices in this class were better, 1% similar, 97% worse
» The best had a delta of 8%, average was 20%, worst was 50%
Compared to all devices tested
» 1% of all tested devices were better, 1% similar, 98% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Energy Management

Power Consumption

Idling on desktop draws between 5 W and 9 W to be higher than expected for its category. Additionally, the tablet continues to draw between 2 W and 3 W from the outlet when turned off or in Sleep mode to suggest poor power management.

Running Prime95 and FurMark simultaneously pulls 27 W from the small (~9.5 x 4.3 x 3 cm) 24 W AC adapter. This maximum consumption is very short-lived as shown by our graphs below.

Steady consumption of 16 W when running 3DMark 06
Steady consumption of 16 W when running 3DMark 06
Prime95 initiated at 10s mark. Consumption spikes to 22 W for just one or two seconds
Prime95 initiated at 10s mark. Consumption spikes to 22 W for just one or two seconds
Prime95+FurMark initiated at 10s mark. Consumption spikes to 27 W for just one or two seconds
Prime95+FurMark initiated at 10s mark. Consumption spikes to 27 W for just one or two seconds
Power Consumption
Off / Standbydarklight 2.4 / 2.2 Watt
Idledarkmidlight 5.2 / 8.3 / 8.7 Watt
Load midlight 15.8 / 27.1 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy
Chuwi UBook CWI509
N4100, UHD Graphics 600, Netac SSD 256GB, IPS, 1920x1080, 11.6
Microsoft Surface Pro 7 Core i5-1035G4
1035G4, Iris Plus Graphics G4 (Ice Lake 48 EU), Toshiba BG4 KBG40ZPZ256G, IPS, 2736x1824, 12.3
Microsoft Surface Go MHN-00003
4415Y, UHD Graphics 615, 64 GB eMMC Flash, IPS, 1800x1200, 10
HP ProBook x360 11 G4
8100Y, UHD Graphics 615, WDC PC SN520 SDAPNUW-256G, IPS, 1366x768, 11.6
Trekstor Surftab Theatre S11
MT8163 V/A 1.5 GHz, Mali-T720 MP2, 32 GB eMMC Flash, IPS, 1920x1080, 11.6
HP x2 210 G2
Z8350, HD Graphics 400 (Braswell), 64 GB eMMC Flash, IPS, 1280x800, 10.1
Power Consumption
-62%
21%
41%
39%
44%
Idle Minimum *
5.2
4.5
13%
2.88
45%
2.4
54%
3.27
37%
2.9
44%
Idle Average *
8.3
9.2
-11%
4.8
42%
4.2
49%
6.33
24%
4.8
42%
Idle Maximum *
8.7
9.6
-10%
7.5
14%
5
43%
6.39
27%
5.2
40%
Load Average *
15.8
42
-166%
16.9
-7%
13.2
16%
8.9
44%
10.4
34%
Load Maximum *
27.1
63.5
-134%
23.8
12%
16
41%
10.55
61%
10.9
60%

* ... smaller is better

Battery Life

Battery capacity is small at just 26 Wh and battery life is just average at best. We're able to record a total WLAN runtime of 5.5 hours before automatic shutdown compared to 7.5 hours on the Surface Go. Recharging from empty to full capacity is slow at 2 to 2.5 hours.

Battery Runtime
NBC WiFi Websurfing Battery Test 1.3
5h 27min
Chuwi UBook CWI509
N4100, UHD Graphics 600, 26 Wh
Microsoft Surface Pro 7 Core i5-1035G4
1035G4, Iris Plus Graphics G4 (Ice Lake 48 EU), 45 Wh
Microsoft Surface Go MHN-00003
4415Y, UHD Graphics 615, 28 Wh
HP ProBook x360 11 G4
8100Y, UHD Graphics 615, 48 Wh
Trekstor Surftab Theatre S11
MT8163 V/A 1.5 GHz, Mali-T720 MP2, 25.16 Wh
HP x2 210 G2
Z8350, HD Graphics 400 (Braswell), 32.5 Wh
Battery Runtime
83%
37%
96%
-9%
69%
Reader / Idle
1336
771
WiFi v1.3
327
597
83%
448
37%
641
96%
296
-9%
551
69%
Load
116
180

Pros

+ ~95 percent sRGB coverage; good colors if properly calibrated
+ USB Type-A, USB Type-C, MicroSD, and micro-HDMI ports
+ front and rear cameras
+ inexpensive
+ silent

Cons

- U-shaped bracket is flimsy at narrow angles
- questionable detachable keyboard quality
- poorly calibrated display out of the box
- heaven uneven backlight bleeding
- pen loop doesn't fit WACOM pen
- slow system performance
- no keyboard backlight
- weak clickpad
- dim display

Verdict

In review: Chuwi UBook CWI509 detachable. Test unit provided by Chuwi
In review: Chuwi UBook CWI509 detachable. Test unit provided by Chuwi

The Chuwi UBook has a few noteworthy features for its budget category. The display shows potential when properly calibrated and the wide selection of ports is a lot better than what the Surface Go can offer. Unfortunately, everything else kind of just falls apart or is average at best. The detachable keyboard feels cheaply put together, the display is fairly dim with noticeable backlight bleeding, and overall system responsiveness is very slow. It's decent enough for word processing, light browsing and streaming, but certainly not all at once.

An inexpensive tablet convertible that's reflective of its cheap price point. The Chuwi UBook works best as a backup or small HTPC rather than a primary workhorse.

Chuwi UBook CWI509 - 12/30/2019 v7
Allen Ngo

Chassis
54 / 98 → 55%
Keyboard
64%
Pointing Device
37%
Connectivity
49 / 75 → 65%
Weight
78 / 20-75 → 100%
Battery
66%
Display
73%
Games Performance
15 / 78 → 20%
Application Performance
55 / 85 → 65%
Temperature
94%
Noise
100%
Audio
46 / 91 → 50%
Camera
40 / 85 → 47%
Average
59%
70%
Convertible - Weighted Average

Pricecompare

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> Notebook / Laptop Reviews and News > Reviews > Chuwi UBook CWI509 Tablet Review: The Surface Go Wannabe
Allen Ngo, 2019-12-31 (Update: 2020-01- 2)
Allen Ngo
Allen Ngo - US Editor in Chief
After graduating with a B.S. in environmental hydrodynamics from the University of California, I studied reactor physics to become licensed by the U.S. NRC to operate nuclear reactors. There's a striking level of appreciation you gain for everyday consumer electronics after working with modern nuclear reactivity systems astonishingly powered by computers from the 80s. When I'm not managing day-to-day activities and US review articles on Notebookcheck, you can catch me following the eSports scene and the latest gaming news.