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Asus VivoBook Flip 14 TP401NA (N4200, FHD) Convertible Review

Sascha Mölck, 👁 Sebastian Jentsch, Felicitas Krohn (translated by Katherine Bodner), 04/26/2018

A good deal The VivoBook Flip scores points with its high-contrast IPS touch screen and silent operation. The former can also be used for inputs with an active stylus.

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The Asus VivoBook Flip 14 TP 401NA is a slim, compact 14-inch convertible. It is powered by a quad-core processor of the Apollo Lake generation. The touchscreen can be operated with your fingers or with an active stylus. Some of our test unit's competitors are other convertibles such as the Acer Spin 3 SP314-51, the Lenovo Yoga 510-14AST and the Trekstor Primebook C13.

Asus VivoBook Flip 14 TP401NA (VivoBook Flip 14 Series)
Graphics adapter
Intel HD Graphics 505, Core: 200-750 MHz, single channel, 23.20.16.4982
Memory
8192 MB 
, LPDDR3-1866, single channel, RAM soldered on, no spare slots
Display
14 inch 16:9, 1920 x 1080 pixel 157 PPI, capacitive, 10-point touch, native pen support, BOE CQ NV140FHM-N49, IPS, glossy: yes
Storage
128 GB eMMC Flash, 128 GB 
, 91.5 GB free
Soundcard
Realtek ALC256 @ Intel Apollo Lake SoC - High Definition Audio Controller
Connections
1 USB 2.0, 1 USB 3.0 / 3.1 Gen1, 1 HDMI, Audio Connections: combined audio, Card Reader: SD, Sensors: accelerometer
Networking
Qualcomm Atheros QCA9377 Wireless Network Adapter (a/b/g/n/ac), Bluetooth 4.2
Size
height x width x depth (in mm): 15.4 x 327.4 x 226.5 ( = 0.61 x 12.89 x 8.92 in)
Battery
39 Wh Lithium-Ion
Operating System
Microsoft Windows 10 Home 64 Bit
Camera
Webcam: VGA
Primary Camera: 0.3 MPix
Additional features
Speakers: stereo, Keyboard: chiclet, Keyboard Light: no, McAfee LiveSafe (trial), MS Office 365 (trial), 24 Months Warranty, fanless
Weight
1.5 kg ( = 52.91 oz / 3.31 pounds), Power Supply: 146 g ( = 5.15 oz / 0.32 pounds)
Price
449 Euro
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

Case & Connectivity - The Asus Convertible has no Type-A USB port

Asus has equipped the VivoBook Flip with a slim, compact case. While the display cover is made of metal, the base unit is plastic. The light case is the color of anthracite and is free from any workmanship deficiencies, although it is not quite as stable as we would have hoped. The base unit can be warped without too much force and lacks rigidity. The battery cannot be removed and the device does not offer a maintenance hatch.

In order to reach the insides, the bottom of the base unit has to be taken off by removing the screws. Careful: There are additional screws hidden beneath the two rubber feet. As the bottom cover does not sit particularly tight, it can be easily removed.

Asus has given its convertible only two USB ports. The company has chosen to use one Type-C port (USB 3.1 Gen 1) and a Micro-USB port (USB 2.0). This means that you will probably always have to carry a suitable adapter with you, in order to connect things such as USB flash drives. The HDMI output also requires an adapter: Asus has chosen a MicroHDMI port.

While Asus has decided to use the compact versions of usual ports, the manufacturer has included a full-fledged SD card reader instead of a microSD model. This is not the fastest of its kind. When copying large sets of data, we reached a transfer rate of 36.3 MB/s. 250 JPG files (each about 5 MB large) are transferred at a speed of 24.5 MB/s. We tested the memory card reader with our reference card (Toshiba Exceria Pro SDXC 64 GB UHS-II).

The Wi-Fi module has a Qualcomm chip (QCA9377) and supports the Wi-Fi standards 802.11a/b/g/n as well as the fast ac standard. The transfer rates, which we tested under ideal conditions (no other Wi-Fi devices in the vicinity, close distance between notebook and server PC), are average, as the chip only supports the 1x1 MIMO technology.

Size Comparison

Port Selection

left: USB 2.0 (Micro USB), SD card reader, volume rocker, power button, speaker
left: USB 2.0 (Micro USB), SD card reader, volume rocker, power button, speaker
right: speaker, combined audio jack, USB 3.1 Gen 1 (Type C), MicroHDMI, power supply
right: speaker, combined audio jack, USB 3.1 Gen 1 (Type C), MicroHDMI, power supply
SDCardreader Transfer Speed
average JPG Copy Test (av. of 3 runs)
Lenovo Yoga 510-14AST
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
64.1 MB/s ∼100% +162%
Average of class Convertible
  (7.5 - 197, n=110)
58.3 MB/s ∼91% +138%
Asus VivoBook Flip 14 TP401NA
  (Toshiba Exceria Pro M501 microSDXC 64GB)
24.5 MB/s ∼38%
Trekstor Primebook C13
  (Toshiba Exceria Pro M501 microSDXC 64GB)
22.7 MB/s ∼35% -7%
Acer Spin 3 SP314-51-548L
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
20.6 MB/s ∼32% -16%
maximum AS SSD Seq Read Test (1GB)
Lenovo Yoga 510-14AST
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
86.7 MB/s ∼100% +139%
Average of class Convertible
  (24 - 246, n=108)
73.7 MB/s ∼85% +103%
Asus VivoBook Flip 14 TP401NA
  (Toshiba Exceria Pro M501 microSDXC 64GB)
36.3 MB/s ∼42%
Trekstor Primebook C13
  (Toshiba Exceria Pro M501 microSDXC 64GB)
35.2 MB/s ∼41% -3%
Acer Spin 3 SP314-51-548L
  (Toshiba Exceria Pro SDXC 64 GB UHS-II)
24.8 MB/s ∼29% -32%
Networking
iperf3 Client (receive) TCP 1 m 4M x10
Acer Spin 3 SP314-51-548L
Atheros/Qualcomm QCA6174
596 MBit/s ∼100% +77%
Asus VivoBook Flip 14 TP401NA
Qualcomm Atheros QCA9377 Wireless Network Adapter
336 MBit/s ∼56%
Trekstor Primebook C13
Intel Dual Band Wireless-AC 3165
314 MBit/s ∼53% -7%
Lenovo Yoga 510-14AST
Qualcomm Atheros QCA9377 Wireless Network Adapter
188 MBit/s ∼32% -44%
iperf3 Client (transmit) TCP 1 m 4M x10
Trekstor Primebook C13
Intel Dual Band Wireless-AC 3165
345 MBit/s ∼100% +31%
Lenovo Yoga 510-14AST
Qualcomm Atheros QCA9377 Wireless Network Adapter
332 MBit/s ∼96% +26%
Acer Spin 3 SP314-51-548L
Atheros/Qualcomm QCA6174
300 MBit/s ∼87% +14%
Asus VivoBook Flip 14 TP401NA
Qualcomm Atheros QCA9377 Wireless Network Adapter
264 MBit/s ∼77%

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Input Devices - The TP401NA can also be operated with an active stylus

Asus has equipped the convertible with a chiclet keyboard without backlighting. The flat keys with a slightly rough surface have short travel and a noticeable pressure point. The key resistance could have been made a little more crisp. Good: The keyboard does not give way while typing. Overall, Asus has provided the Flip 14 with a decent keyboard that is also suitable for regular typing.

The multi-touch ClickPad takes up an area of 10.5 x 7.3 cm (~4.13 x 2.87 in). This is a nice, large area that gives you enough space to use gesture control. The smooth surface of the touchpad makes gliding your fingers over it easy. It has short travel and a clear pressure point.

The touchscreen of the VivoBook Flip supports 10 touch points. It responds quickly to inputs and we encountered no issues when using the touchscreen, both with our fingers and with an active stylus. According to the Asus website, you can use either the Asus Pen, which is available separately, or any other active stylus.

input devices
input devices

Display - Asus has equipped the Flip 14 with a high-contrast touchscreen with stable viewing angles

pixel array
pixel array

The 14-inch touchscreen display of the VivoBook Flip has a native resolution of 1920x1080 pixels. The screen offers a good contrast ratio (1205:1), but its brightness could be better (239.1 cd/). Considering the price of the convertible, this is still quite acceptable.

Unfortunately, the display has PWM flickering at a frequency of 960 Hz up to a brightness level of 90%. Due to this high frequency, even sensitive users should be free from headaches and/or eye problems.

266
cd/m²
248
cd/m²
245
cd/m²
249
cd/m²
253
cd/m²
224
cd/m²
233
cd/m²
233
cd/m²
201
cd/m²
Distribution of brightness
X-Rite i1Pro 2
Maximum: 266 cd/m² Average: 239.1 cd/m² Minimum: 15 cd/m²
Brightness Distribution: 76 %
Center on Battery: 253 cd/m²
Contrast: 1205:1 (Black: 0.21 cd/m²)
ΔE Color 4.29 | 0.4-29.43 Ø6.2, calibrated: 5.93
ΔE Greyscale 1.49 | 0.64-98 Ø6.4
59% sRGB (Argyll 3D) 38% AdobeRGB 1998 (Argyll 3D)
Gamma: 2.29
Asus VivoBook Flip 14 TP401NA
IPS, 1920x1080, 14
Lenovo Yoga 510-14AST
TN LED, 1366x768, 14
Trekstor Primebook C13
IPS, 1920x1080, 13.3
Acer Spin 3 SP314-51-548L
IPS, 1920x1080, 14
Response Times
-26%
7%
-0%
Response Time Grey 50% / Grey 80% *
42 (22, 20)
70 (32, 38)
-67%
39 (19, 20)
7%
43 (21, 22)
-2%
Response Time Black / White *
34 (20, 14)
29 (23, 6)
15%
30 (17, 13)
12%
35 (21, 14)
-3%
PWM Frequency
960 (90)
990 (20)
3%
1000
4%
Screen
-148%
-44%
3%
Brightness middle
253
242
-4%
201
-21%
220
-13%
Brightness
239
224
-6%
207
-13%
221
-8%
Brightness Distribution
76
88
16%
88
16%
78
3%
Black Level *
0.21
0.62
-195%
0.22
-5%
0.18
14%
Contrast
1205
390
-68%
914
-24%
1222
1%
Colorchecker DeltaE2000 *
4.29
13.03
-204%
6.6
-54%
3.98
7%
Colorchecker DeltaE2000 max. *
8.74
18.79
-115%
12.39
-42%
7.69
12%
Colorchecker DeltaE2000 calibrated *
5.93
4
33%
Greyscale DeltaE2000 *
1.49
14.6
-880%
7.73
-419%
1.68
-13%
Gamma
2.29 96%
2.22 99%
2.46 89%
2.37 93%
CCT
6611 98%
18869 34%
7864 83%
6382 102%
Color Space (Percent of AdobeRGB 1998)
38
33
-13%
61
61%
38
0%
Color Space (Percent of sRGB)
59
52
-12%
93
58%
58
-2%
Total Average (Program / Settings)
-87% / -128%
-19% / -32%
2% / 2%

* ... smaller is better

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 960 Hz ≤ 90 % brightness setting

The display backlight flickers at 960 Hz (Likely utilizing PWM) Flickering detected at a brightness setting of 90 % and below. There should be no flickering or PWM above this brightness setting.

The frequency of 960 Hz is quite high, so most users sensitive to PWM should not notice any flickering.

In comparison: 52 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 9064 (minimum: 43 - maximum: 142900) Hz was measured.

The color display is good ex works. We measured a DeltaE 2000 color deviation of 4.29, which is not too far from the ideal (DeltaE below 3). The display does not have a blue cast.

CalMAN - ColorChecker
CalMAN - ColorChecker
CalMAN - gray scales
CalMAN - gray scales
CalMAN - color saturation
CalMAN - color saturation

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
34 ms ... rise ↗ and fall ↘ combined↗ 20 ms rise
↘ 14 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers.
In comparison, all tested devices range from 0.8 (minimum) to 240 (maximum) ms. » 87 % 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
42 ms ... rise ↗ and fall ↘ combined↗ 22 ms rise
↘ 20 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. » 53 % of all devices are better.
This means that the measured response time is similar to the average of all tested devices (41 ms).

Asus has equipped the convertible with an IPS panel with stable viewing angles. This means that the screen can be read easily from every position. The device can only be used outdoors if the sun is not too bright. The reflective display surface makes working outside even more difficult.

the Flip 14 outdoors (in direct sunlight)
the Flip 14 outdoors (in direct sunlight)
the Flip 14 outdoors (with the sun behind the device)
the Flip 14 outdoors (with the sun behind the device)

Performance- The Asus VivoBook is equipped with a quad-core processor

With its VivoBook Flip 14 TP401NA, Asus has created a light, slim 14-inch convertible. It offers sufficient computing power for office and internet applications. Our test unit will probably be available for between $400 and $500. This is an estimation, as we were not able to find the device available in our configuration. Other configurations are available from $350.

Processor

The VivoBook Flip is powered by a Pentium Silver N4200 (Apollo Lake) quad-core processor from Intel. Thanks to its low TDP of 6 watts, the chip can be cooled passively. The processor works at a base clock rate of 1.1 GHz and can increase to up to 2.5 GHz via the turbo.

The processor ran at 2.4 GHz for the first few seconds of the Cinebench multi-thread tests and then dropped to a clock rate of 1.9 to 2 GHz. The clock rate remained at 2.4 GHz for most of the single-thread tests, with the core occasionally speeding up to 2.5 GHz or dropping to 2 GHz.

We tested whether the turbo can run for a long period by running the multi-thread test from Cinebench R15 in a loop for 30 minutes. The results dropped minimally in the first four rounds and then remained constant. The turbo was used, but could not work at its maximum speed.

0102030405060708090100110120130140150160170Tooltip
Cinebench R15 CPU Multi 64 Bit
Cinebench R10 Rendering Single 32Bit
1630
Cinebench R10 Rendering Multiple CPUs 32Bit
4909
Cinebench R10 Shading 32Bit
3091
Cinebench R15 CPU Single 64Bit
52 Points
Cinebench R15 CPU Multi 64Bit
161 Points
Cinebench R15 OpenGL 64Bit
15.73 fps
Cinebench R15 Ref. Match 64Bit
97.8 %
Help
Cinebench R15
CPU Single 64Bit
Acer Spin 3 SP314-51-548L
Intel Core i5-8250U
144 Points ∼66% +177%
Average of class Convertible
  (19 - 177, n=279)
102 Points ∼47% +96%
Lenovo Yoga 510-14AST
AMD A9-9410
63 Points ∼29% +21%
Asus VivoBook Flip 14 TP401NA
Intel Pentium N4200
52 Points ∼24%
Average Intel Pentium N4200
  (47 - 53, n=15)
51.7 Points ∼24% -1%
Trekstor Primebook C13
Intel Celeron N3350
45 Points ∼21% -13%
CPU Multi 64Bit
Acer Spin 3 SP314-51-548L
Intel Core i5-8250U
523 Points ∼12% +225%
Average of class Convertible
  (33 - 761, n=285)
281 Points ∼6% +75%
Asus VivoBook Flip 14 TP401NA
Intel Pentium N4200
161 Points ∼4%
Average Intel Pentium N4200
  (128 - 178, n=15)
157 Points ∼4% -2%
Lenovo Yoga 510-14AST
AMD A9-9410
130 Points ∼3% -19%
Trekstor Primebook C13
Intel Celeron N3350
88 Points ∼2% -45%
Cinebench R10
Rendering Single 32Bit
Acer Spin 3 SP314-51-548L
Intel Core i5-8250U
5540 Points ∼51% +240%
Average of class Convertible
  (466 - 7508, n=235)
3314 Points ∼31% +103%
Lenovo Yoga 510-14AST
AMD A9-9410
2694 Points ∼25% +65%
Average Intel Pentium N4200
  (1630 - 1680, n=8)
1655 Points ∼15% +2%
Asus VivoBook Flip 14 TP401NA
Intel Pentium N4200
1630 Points ∼15%
Rendering Multiple CPUs 32Bit
Acer Spin 3 SP314-51-548L
Intel Core i5-8250U
16067 Points ∼32% +227%
Average of class Convertible
  (706 - 24180, n=231)
7605 Points ∼15% +55%
Average Intel Pentium N4200
  (4673 - 5440, n=8)
5132 Points ∼10% +5%
Asus VivoBook Flip 14 TP401NA
Intel Pentium N4200
4909 Points ∼10%
Lenovo Yoga 510-14AST
AMD A9-9410
4619 Points ∼9% -6%
Geekbench 3
32 Bit Multi-Core Score
Acer Spin 3 SP314-51-548L
Intel Core i5-8250U
12350 Points ∼40% +167%
Average of class Convertible
  (954 - 14144, n=94)
5113 Points ∼16% +11%
Asus VivoBook Flip 14 TP401NA
Intel Pentium N4200
4627 Points ∼15%
Average Intel Pentium N4200
  (4425 - 4736, n=6)
4593 Points ∼15% -1%
Lenovo Yoga 510-14AST
AMD A9-9410
3299 Points ∼11% -29%
32 Bit Single-Core Score
Acer Spin 3 SP314-51-548L
Intel Core i5-8250U
3421 Points ∼73% +145%
Lenovo Yoga 510-14AST
AMD A9-9410
2134 Points ∼45% +53%
Average of class Convertible
  (561 - 4102, n=94)
2118 Points ∼45% +52%
Asus VivoBook Flip 14 TP401NA
Intel Pentium N4200
1396 Points ∼30%
Average Intel Pentium N4200
  (1362 - 1430, n=6)
1394 Points ∼30% 0%
Geekbench 4.0
64 Bit Multi-Core Score
Acer Spin 3 SP314-51-548L
Intel Core i5-8250U
12201 Points ∼44% +178%
Average of class Convertible
  (856 - 14519, n=34)
7092 Points ∼26% +62%
Asus VivoBook Flip 14 TP401NA
Intel Pentium N4200
4389 Points ∼16%
Average Intel Pentium N4200
  (4162 - 4558, n=6)
4385 Points ∼16% 0%
Lenovo Yoga 510-14AST
AMD A9-9410
3182 Points ∼12% -28%
64 Bit Single-Core Score
Acer Spin 3 SP314-51-548L
Intel Core i5-8250U
4194 Points ∼73% +175%
Average of class Convertible
  (805 - 4858, n=34)
2999 Points ∼52% +97%
Lenovo Yoga 510-14AST
AMD A9-9410
2133 Points ∼37% +40%
Average Intel Pentium N4200
  (1526 - 1609, n=6)
1563 Points ∼27% +2%
Asus VivoBook Flip 14 TP401NA
Intel Pentium N4200
1526 Points ∼26%
Geekbench 4.1/4.2
64 Bit Multi-Core Score
Acer Spin 3 SP314-51-548L
Intel Core i5-8250U
12516 Points ∼35% +178%
Average of class Convertible
  (2296 - 15196, n=30)
8478 Points ∼23% +88%
Average Intel Pentium N4200
  (4468 - 4729, n=4)
4604 Points ∼13% +2%
Asus VivoBook Flip 14 TP401NA
Intel Pentium N4200
4498 Points ∼12%
64 Bit Single-Core Score
Acer Spin 3 SP314-51-548L
Intel Core i5-8250U
4312 Points ∼68% +179%
Average of class Convertible
  (880 - 4977, n=30)
3302 Points ∼52% +114%
Average Intel Pentium N4200
  (1544 - 1616, n=4)
1576 Points ∼25% +2%
Asus VivoBook Flip 14 TP401NA
Intel Pentium N4200
1544 Points ∼24%
JetStream 1.1 - 1.1 Total Score
Acer Spin 3 SP314-51-548L
Intel Core i5-8250U (Edge 41)
220.64 Points ∼1% +182%
Average of class Convertible
  (33.5 - 288, n=157)
166 Points ∼1% +112%
Lenovo Yoga 510-14AST
AMD A9-9410 (Edge 38)
130.35 Points ∼1% +67%
Average Intel Pentium N4200
  (56.4 - 91.5, n=14)
79.2 Points ∼0% +1%
Asus VivoBook Flip 14 TP401NA
Intel Pentium N4200 (Edge 41)
78.274 Points ∼0%
Trekstor Primebook C13
Intel Celeron N3350
50.553 Points ∼0% -35%

System Performance

The system runs smoothly and benefits from the comparatively fast eMMC storage that Asus has given the Flip 14. Therefore, the system gives a better impression than that of comparable devices. The device was not made for high-end performance, but the SoC is good enough for office and internet applications. The results in the PCMark benchmarks correspond with the performance the SoC can offer. It is not possible to increase system performance.

PCMark 8 Home Score Accelerated v2
1966 points
PCMark 8 Creative Score Accelerated v2
2394 points
PCMark 8 Work Score Accelerated v2
2646 points
Help
PCMark 8 - Home Score Accelerated v2
Acer Spin 3 SP314-51-548L
UHD Graphics 620, 8250U, Micron 1100 MTFDDAV256TBN
3650 Points ∼60% +86%
Average of class Convertible
  (741 - 4741, n=255)
2741 Points ∼45% +39%
Lenovo Yoga 510-14AST
Radeon R5 (Stoney Ridge), A9-9410
2670 Points ∼44% +36%
Asus VivoBook Flip 14 TP401NA
HD Graphics 505, N4200, 128 GB eMMC Flash
1966 Points ∼32%
Average Intel Pentium N4200, Intel HD Graphics 505
  (1337 - 2314, n=14)
1962 Points ∼32% 0%
Trekstor Primebook C13
HD Graphics 500, N3350, SanDisk DF4064
1629 Points ∼27% -17%

Storage Devices

The system drive is an eMMC module that has a capacity of 128 GB. 91.5 GB is available for personal use while the rest is taken up by the Windows operating system and Recovery partition. The transfer rates are comparatively good. Asus seems to have chosen an up-to-date eMMC storage device.

Luckily, Asus has not made the mistake that has been made in many comparable devices: These are often equipped with 32-GB modules, which are simply not large enough for a Windows 10 system. Manufacturers are trying to cut the wrong corners in order to minimize the device's price. We would recommend a minimum capacity of 64 GB.

If the available storage capacity and/or the transfer rates of the eMMC storage do not fulfil your needs, you can additionally install a M.2 2280 SATA III SSD - the VivoBook has the necessary slot. You could also install Windows 10 on it, however the eMMC module cannot be deactivated, so that would mean having two Windows operating systems installed. Expanding storage via an SD card is not ideal as the card stands out of the slot by 17 mm (~0.67 in).

there is a free M.2 2280 slot available
there is a free M.2 2280 slot available
128 GB eMMC Flash
Sequential Read: 263.1 MB/s
Sequential Write: 191.5 MB/s
512K Read: 218.4 MB/s
512K Write: 178.5 MB/s
4K Read: 24.11 MB/s
4K Write: 19.36 MB/s
4K QD32 Read: 28.6 MB/s
4K QD32 Write: 22.65 MB/s
Asus VivoBook Flip 14 TP401NA
128 GB eMMC Flash
Lenovo Yoga 510-14AST
 
Trekstor Primebook C13
SanDisk DF4064
Acer Spin 3 SP314-51-548L
Micron 1100 MTFDDAV256TBN
Average 128 GB eMMC Flash
 
Average of class Convertible
 
CrystalDiskMark 3.0
186%
-31%
316%
-35%
205%
Write 4k QD32
22.65
163.3
621%
13.83
-39%
260.6
1051%
15.3 (4.3 - 46.5, n=12)
-32%
148 (0.033 - 573, n=329)
553%
Read 4k QD32
28.6
176.3
516%
32.26
13%
246.7
763%
26.6 (10.8 - 36.8, n=12)
-7%
196 (0.317 - 632, n=329)
585%
Write 4k
19.36
56.75
193%
9.903
-49%
86.65
348%
13.1 (3.55 - 35.5, n=12)
-32%
54.7 (0.013 - 182, n=329)
183%
Read 4k
24.11
26.71
11%
5.212
-78%
27.17
13%
14.5 (7.31 - 25.2, n=12)
-40%
40 (0.215 - 5814, n=329)
66%
Write 512
178.5
195.6
10%
85.93
-52%
345.4
94%
73.5 (16.6 - 206, n=12)
-59%
251 (7.93 - 2043, n=327)
41%
Read 512
218.4
356.3
63%
207.2
-5%
316.4
45%
158 (66.6 - 241, n=12)
-28%
328 (20.7 - 1788, n=327)
50%
Write Seq
191.5
207.7
8%
113.8
-41%
439.8
130%
86.4 (24.6 - 215, n=12)
-55%
317 (23 - 1889, n=329)
66%
Read Seq
263.1
434.6
65%
265.4
1%
484.3
84%
185 (82.4 - 293, n=12)
-30%
511 (33.6 - 2486, n=329)
94%

Graphics

Intel's HD Graphics 505 is responsible for the graphics department. The GPU supports DirectX 12 and works at speeds of up to 750 MHz. The results in the 3DMark benchmark are normal for this GPU. The integrated decoder can unburden the processor when playing videos in the usual formats such as H.265, VP9 and HEVC/H.265.

GPU-Z
GPU-Z
DXVAChecker
DXVAChecker
3DMark 11 Performance
667 points
3DMark Cloud Gate Standard Score
2730 points
3DMark Fire Strike Score
383 points
Help
3DMark 11 - 1280x720 Performance GPU
Acer Spin 3 SP314-51-548L
Intel UHD Graphics 620, Intel Core i5-8250U
1634 Points ∼100% +170%
Lenovo Yoga 510-14AST
AMD Radeon R5 (Stoney Ridge), AMD A9-9410
1190 Points ∼73% +96%
Average of class Convertible
  (173 - 7483, n=306)
1183 Points ∼72% +95%
Average Intel HD Graphics 505
  (424 - 825, n=15)
623 Points ∼38% +3%
Asus VivoBook Flip 14 TP401NA
Intel HD Graphics 505, Intel Pentium N4200
606 Points ∼37%
Trekstor Primebook C13
Intel HD Graphics 500, Intel Celeron N3350
543 Points ∼33% -10%

Gaming Performance

The hardware of the TP401NA can display only a few games from our database smoothly - and only if the resolution and quality settings are set to low. These are games that have very low demands on the hardware. You can find games that can be displayed more easily in the Casual Games section of the Microsoft Store.

low med. high ultra
StarCraft 2 (2010) 69.715.99.7fps
Anno 2070 (2011) 31.114.89.3fps
BioShock Infinite (2013) 24.910.79.4fps
GRID 2 (2013) 36.819.412.5fps
Middle-earth: Shadow of Mordor (2014) 12.47.7fps
Overwatch (2016) 7.1fps
Team Fortress 2 (2017) 2825.2fps
F1 2017 (2017) 13fps
ELEX (2017) 4.6fps
Assassin´s Creed Origins (2017) 2fps
Need for Speed Payback (2017) 2fps
Star Wars Battlefront 2 (2017) 2.8fps
X-Plane 11.11 (2018) 5.5fps
Far Cry 5 (2018) 3fps

Emissions & Energy - The Asus laptop works silently

System Noise

The VivoBook Flip has neither a cooling fan nor a mechanical hard drive and therefore operates silently.

Temperature

the VivoBook Flip during the stress test
the VivoBook Flip during the stress test

The Flip 14 TP401NA offers the same performance when running on power supply and on battery during our stress test. The processor works at 1.1 to 1.2 GHz. The graphics core starts the test with speeds between 150 and 250 MHz, but then drops to 100 to 150 MHz later on.

The notebook does not heat up particularly. We only measured 40 °C (~104 °F) in one area during our stress test.

Max. Load
 37.3 °C
99 F
40 °C
104 F
39.4 °C
103 F
 
 29.8 °C
86 F
34.6 °C
94 F
32.7 °C
91 F
 
 26.7 °C
80 F
27.4 °C
81 F
28.1 °C
83 F
 
Maximum: 40 °C = 104 F
Average: 32.9 °C = 91 F
35.4 °C
96 F
39.5 °C
103 F
36 °C
97 F
30.2 °C
86 F
29.6 °C
85 F
28.7 °C
84 F
28.4 °C
83 F
26.2 °C
79 F
27.8 °C
82 F
Maximum: 39.5 °C = 103 F
Average: 31.3 °C = 88 F
Power Supply (max.)  43.2 °C = 110 F | Room Temperature 24.3 °C = 76 F | FIRT 550-Pocket
(±) The average temperature for the upper side under maximal load is 32.9 °C / 91 F, compared to the average of 30.4 °C / 87 F for the devices in the class Convertible.
(±) The maximum temperature on the upper side is 40 °C / 104 F, compared to the average of 35.4 °C / 96 F, ranging from 21.8 to 55.7 °C for the class Convertible.
(+) The bottom heats up to a maximum of 39.5 °C / 103 F, compared to the average of 36.5 °C / 98 F
(+) In idle usage, the average temperature for the upper side is 29.3 °C / 85 F, compared to the device average of 30.4 °C / 87 F.
(+) The palmrests and touchpad are cooler than skin temperature with a maximum of 28.1 °C / 82.6 F and are therefore cool to the touch.
(±) The average temperature of the palmrest area of similar devices was 29.1 °C / 84.4 F (+1 °C / 1.8 F).
heat development top (load)
heat development top (load)
heat development bottom (load)
heat development bottom (load)
heat development top (idle)
heat development top (idle)
heat development bottom (idle)
heat development bottom (idle)

Speakers

Asus has placed a speaker on either side of the case. They produce a full-bodied, pleasant sound that can be listened to for a while, despite it being slightly muffled. Alternatively, you can also connect headphones or external speakers.

dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2034.833.834.82531.933.531.93135.23635.24031.229.931.25033.432.433.46328.32928.38028.926.728.910036.52636.51254825.34816051.222.751.220047.22247.225042.521.442.53155020.55040056.619.856.650056.519.256.563054.91854.980058.517.858.5100059.317.459.3125056.617.156.6160057.417.157.4200061.517.461.5250061.317.261.3315063.517.463.5400061.517.761.5500059.617.959.6630054.217.854.2800050.818.150.81000050.118.150.11250044.518.144.5160005118.251SPL71.43071.4N27.71.327.7median 54.9median 18.1median 54.9Delta4.51.54.535.335.132.931.831.83236.535.132.428.93328.936.328.848.32761.52752.924.860.92462.822.763.32269.521.267.82174.82075.919.472.718.97117.770.117.86917.671.817.668.117.671.417.673.717.670.417.571.617.671.617.669.617.459.717.583.630.662.51.5median 69.6median 17.84.62.4hearing rangehide median Pink NoiseAsus VivoBook Flip 14 TP401NAApple MacBook 12 (Early 2016) 1.1 GHz
Frequency diagram (checkboxes can be checked and unchecked to compare devices)
Asus VivoBook Flip 14 TP401NA audio analysis

(-) | not very loud speakers (63.5 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 9% lower than median
(-) | bass is not linear (17.4% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 2.8% away from median
(+) | mids are linear (6.9% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 5.1% higher than median
(+) | highs are linear (6.2% delta to prev. frequency)
Overall 100 - 16.000 Hz
(+) | overall sound is linear (14.9% difference to median)
Compared to same class
» 10% of all tested devices in this class were better, 6% similar, 84% worse
» The best had a delta of 11%, average was 22%, worst was 53%
Compared to all devices tested
» 15% of all tested devices were better, 4% similar, 80% 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
» 2% of all tested devices in this class were better, 2% similar, 97% worse
» The best had a delta of 8%, average was 19%, worst was 50%
Compared to all devices tested
» 2% of all tested devices were better, 1% similar, 98% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Power Consumption

We did not notice anything unusual in terms of power consumption. While idling, we measured a maximum consumption of 7.44 watts. This increased to up to 15.6 watts during the stress test. The power supply has a rated output of 45 watts.

Power Consumption
Off / Standbydarklight / 0.48 Watt
Idledarkmidlight 4.26 / 7.1 / 7.44 Watt
Load midlight 1.4 / 15.6 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy

Battery Runtimes

We used our practical Wi-Fi test to simulate the load of surfing the web. The profile "Balanced" was active and the display brightness was set to about 150 cd/m². The VivoBook Flip reached a runtime of 6:31 h.

Battery Runtime
NBC WiFi Websurfing Battery Test 1.3 (Edge 41)
6h 31min
Battery Runtime - WiFi Websurfing 1.3
Acer Spin 3 SP314-51-548L
8250U, UHD Graphics 620, 52.5 Wh
496 min ∼19% +27%
Average of class Convertible
  (153 - 1010, n=226)
450 min ∼17% +15%
Asus VivoBook Flip 14 TP401NA
N4200, HD Graphics 505, 39 Wh
391 min ∼15%
Lenovo Yoga 510-14AST
A9-9410, Radeon R5 (Stoney Ridge), 35 Wh
325 min ∼12% -17%
Trekstor Primebook C13
N3350, HD Graphics 500, 40.7 Wh
257 min ∼10% -34%

Pros

+ IPS screen
+ Full-HD resolution
+ silent operation
+ free M.2 2280 slot
+ AC Wi-Fi
+ Type-C USB
+ optional input with pen

Cons

- no Type-A USB ports
- mediocre stability of base unit
- average battery runtimes

Verdict

The Asus Vivobook Flip 14 TP401NA. Test unit provided by Asus Germany
The Asus Vivobook Flip 14 TP401NA. Test unit provided by Asus Germany

The slim, compact 14-inch convertible is powered by a Pentium Silver N4200 quad-core processor that offers sufficient processing power for internet and office applications. Thanks to its passive cooling, the TP401NA operates silently.

The storage capacity of the Asus is sufficiently large: The system drive is a 128-GB eMMC module. The storage capacity can also be expanded by installing an M.2 2280 SSD in the provided slot.

The Full HD IPS touchscreen impresses with its stable viewing angles and good contrast ratio. The brightness, however, is rather low. The touchscreen can be operated with your fingers or with an active stylus.

Asus has created the VivoBook Flip 14 TP401NA, a convertible that gives a good impression despite having some weaknesses.

The keyboard seems to be very decent and is suitable for regular typing. The battery runtimes are only average. As Asus has decided to forego the usual Type-A USB port, buyers should always carry an adapter with them. 

The model TP401NA EC007T appears to be the most attractive of all available configurations. This has a RAM of 4 GB and a storage device of 64 GB and is currently available for $350.

Asus VivoBook Flip 14 TP401NA - 04/24/2018 v6
Sascha Mölck

Chassis
75 / 98 → 77%
Keyboard
73%
Pointing Device
87%
Connectivity
40 / 80 → 50%
Weight
69 / 35-78 → 79%
Battery
89%
Display
82%
Games Performance
46 / 68 → 67%
Application Performance
57 / 87 → 65%
Temperature
92%
Noise
100%
Audio
53 / 91 → 58%
Camera
35 / 85 → 42%
Average
69%
80%
Convertible - Weighted Average

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> Notebook / Laptop Reviews and News > Reviews > Asus VivoBook Flip 14 TP401NA (N4200, FHD) Convertible Review
Sascha Mölck, 2018-04-26 (Update: 2018-04-27)