Review ASUS ZenBook 14 UX434FL: two screens in a laptop is the norm

Not so long ago on our website an overview of the ASUS ZenBook Pro Duo UX581GV equipped with two displays. The main, 15-inch matrix it augmented with screen — 14 inch touch panel with a resolution of 3840 × 1100 pixels. This decision (and the additional display is really significantly increased the functionality of the device) seemed justified for a particular type of user, but at the same time, one cannot ignore that the ZenBook Pro Duo UX581GV is a curiosity, not available to all. In this

respect, the model of the ZenBook 14 UX434FL looks easier. Though, because the laptop is equipped with a small second screen ScreenPad 2.0 with a diagonal of only 5.65 inches.

ASUS ZenBook 14 UX434FL

At the same time, the ASUS ultrabook is of interest not only for its displays: the unit adopts the latest CPU Core i7-10510U family Comet Lake (the 10th generation Core) and GeForce mobile graphics MX250 — ultrabook with the same hardware we have not tested it.

Specifications, equipment and

At the time of this writing, the sale there were several versions of the ZenBook 14 UX434FL. Models with the Intel chips Comet Lake is new, but for a long time in retail ultrabooks are implemented with processors Whiskey Lake. All the basic features of ZenBook 14 UX434FL presented in the table below.

ASUS ZenBook 14 UX434FL
Display 14″, 1920 × 1080, IPS, matte
14″, 1920 × 1080, IPS, glossy, touch
14″, 3840 × 2160, IPS, glossy, touch
The CPU Intel Core i7-8565U, 4/8 cores/threads, 1.8 m (4,6) GHz, 15 W
Intel Core i5-8265U, 4/8 cores/threads, 1,6 (to 3.9) GHz, 15 W
Intel Core i7-10510U, 4/8 cores/threads, 1,8 (4,9) GHz, 15 W
Graphics Intel HD Graphics 620
NVIDIA GeForce MX250 2GB
RAM 8 or 16 GB DDR3-2400, built-in
SSD 256 or 512 GB, PCI Express 3.0 x2
1 TB PCI Express 3.0 x4
Interfaces 1 × HDMI
1 × USB 3.1 Gen2 Type-C
1 × USB 3.1 Gen2 Type-A
1 × USB 2.0 Type-A
1 × 3.5 mm mini Jack acoustics/microphone
1 × microSD
Built-in battery 50 W·h
External power supply 65W
Dimensions 319 × 199 × 17mm
Weight 1,26 kg
Operating system Windows 10 x64 Home
Windows 10 x64 Pro
Guarantee 2 years
Price in Russia From 86 000

To us in the lab arrived very interesting version of the ZenBook 14 UX434FL. In addition to the processor Intel Core i7-10510U and graphics NVIDIA GeForce MX250 in the laptop soldered 16 GB RAM DDR3-2400 and installed SSD Intel Optane of 512 GB. Unfortunately, at the time of writing the laptop with this configuration is not sold.

Wireless network device implemented by the controller Intel 9560, which supports Wi-Fi standards IEEE 802.11 b/g/n/ac with 2.4 GHz and 5 GHz and a maximum bandwidth of up to 1734 Mbps and Bluetooth 5.0.

Included with the laptop was the small power supply capacity of 65 watts and a weight of just 200 grams.

Appearance and input device

As sung in a pop song, you’ll know it. Yes, outwardly in the ZenBook 14 UX434FL clearly recognizable “jeonbuk” — all characteristic features of the modern ultrabook ASUS he’s got. For example, the cover has a recognizable circular pattern — as if the drop had stirred the smooth surface of the water. The hero of the review is assembled in a full metal body. The material is quite practical (painted aluminum), so that fingerprints and dust are removed in a jiffy.


If you do not have to take into account the ZenBook 14 UX434FL the presence of a ScreenPad 2.0, then externally, the model is a complete copy of the previously tested ultrabook ZenBook 14 UX433FN.

Me, as a person who always and everywhere, in ZenBook 14 UX434FL most attracted to its size and weight. The thickness of laptop is just 17 mm and the device weighs not more than 1.3 kg. There is no need to spend any Parallels and comparisons: ZenBook 14 UX434FL very convenient to carry.

Laptop cover reveals approximately 135 degrees without much effort, you can lift it with one hand. The hinges ErgoLift well-positioned screen, it is not loose even during active and fast typing.

The build quality of a test model I have no complaints. The laptop, by the way, has been successfully tested for compliance with military standard reliability MIL-STD-810G. The testing included the test in the harshest conditions: at altitude, in extreme temperatures and humidity. In addition, we have subjected this ultrabook series of internal tests, the requirements which greatly exceed the generally accepted computer industry standards.

Laptop screen has a thin part on top and 8 mm on each side and 2.9 mm. as a result, the matrix occupies 92 % of the area of the top cover. In simple language, these characteristics mean the following: 14-inch model is very compact in size it is close to some 13.3-inch laptops.

If you open the lid, the base raised above the surface of the table three degrees is another feature of the hinges ErgoLift. Such a focus, according to the manufacturer, provides greater comfort for the user, creates additional space for air circulation around the bottom of the shell and contributes to obtaining a more pure sound with superior bass.

On the left side of the laptop has HDMI output and USB 3.1 Gen2 A-type. Here is the entrance to connect the external power supply and USB 3.1 Gen2 C-type. On the right side of the laptop there was a slot for cards format microSD, USB connector 2.0 A-type and a 3.5 mm headphone Jack.

The keyboard ZenBook 14 UX434FL comfortable. Used a fairly common scissor mechanism that the key travel is 1.4 mm. Used (however briefly) will have is that the layout of the buttons Home, End, PgUp and PgDn, which combined with F9-F12. But the comfortable keyboard the Enter, Shift, Tab and Backspace. Typing is nice — for ultrabook this is important.

Of the features also note that a number of F1-F12 by default works in combination with the Fn button, while the priority is given to their multimedia functions. The keyboard has three levels of white light: in the dark blue buttons symbols are clearly visible, use of a laptop is convenient both day and night.

As already mentioned, the main feature of the model is to test the 5.65-inch screen ScreenPad 2.0. Remember, we talked about the ZenBook PRO UX580 presented at the exhibition Computex 2018? This laptop has been used IPS panel the first generation, it had a diagonal of 5.5 inches and had a resolution of Full HD. Resolution ScreenPad 2.0 has been increased, it is now 2160 × 1080 pixels. Used same matrix type Super IPS. For the sake of saving battery life screen resolution can be reduced to 1000 × 500 pixels and the frequency reduced from 60 Hz to 50 Hz.

As ScreenPad screen 2.0 is useful. By default, both laptop display work in the extension mode, that is, the small screen is a continuation of the big. When enabled, the device immediately activates the shell ScreenXpert. On screen you can make the active window of the messenger or media player. I use ScreenPad 2.0 watched videos on YouTube and worked.

The program Quick Key allows you to quickly enter the long shortcut keys. App Handwriting used for handwriting input, a Number Key for speed dial numbers. By default, the laptop has a special program that increases the functionality of the main Microsoft office packages: Office, Excel, and PowerPoint. Same here — on ScreenPad 2.0 — you can get a software Adobe. Interestingly, very convenient is the inclusion on the touchpad numeric keypad NumPad.

The role of the touchpad touchpad plays just fine. The glass surface was very soft to the touch and perfectly perceives the touch of your fingers — of course, supported the mode of operation of the multi-touch.

To switch between modes quite convenient, the bottom of the panel there are the buttons. Also switching “touchpad/screen” is responsible for a separate function button. The only thing I dont like is constant on ScreenPad 2.0 screen mode after every reboot of the laptop.

The internal structure and capabilities upgrade

To remove the bottom panel of the ZenBook 14 UX434FL, it is necessary to remove not only the visible screws, but to get to the two hidden. This will take literally tear the rubber feet of the device. We disassemble the ultrabook did not, so as not to spoil its appearance.

The more that make it particularly there is no need to replace in the laptop is only SSD. The default used here is quite a performance SSD with Intel Optane HBRPEKNX0202A series H10: this unit incorporates a 32 GB caching memory and 512 GB flash memory standard QLC. RAM in the laptop — wired, in our case, we are talking about 16 GB of system memory working in dual channel mode. Used chips Micron MT52L1G32D4PG-093 is the standard LPDDR3-2400, although the processors Comet Lake, as we know, the support including RAM of standard DDR4-2993. Cooling system test model is a very simple design, consisting of a single heat pipes and one fan.

Testing methodology

Since the laptop has GeForce MX250, the test device in a modern AAA projects using high graphic settings makes no sense. In principle, to test ASUS ZenBook 14 UX434FL in games in General do not make much sense, and yet in Full HD we have launched World of Tanks 1.0 (built-in benchmark, various preset modes graphics quality).

Gaming performance was determined using the well known program FRAPS. With its help we get the render time of each frame. Then, using FRAFS Bench Viewer utility is calculated not only the average FPS, but the 99th percentile. Using the 99th percentile instead of the minimum of the number of frames per second due to the desire to clear the results from the random bursts of productivity that was triggered not directly associated with the operation of the main components of the platform causes.

Performance measurement of CPU and memory was undertaken using the following software:

  • Corona 1.3. To test the speed of rendering using the same rendering. To measure the speed of constructing a standard BTR scenes used for measuring performance.
  • WinRAR 5.40. Archiving folders with a volume of 11 GB with different data format RAR5 and with the maximum degree of compression.
  • Blender 2.79. Determination of the speed of the final rendering in one of the most popular free package for creating three-dimensional graphics. Measured the duration of the construction of the final model from Blender Cycles Benchmark rev4.
  • x265 HD Benchmark. Test the speed of transcoding video in the perspective format: H. 265/HEVC. The table shows the arithmetic average after four runs.
  • CINEBENCH R15. Measurement of performance photorealistic three-dimensional rendering and animation package CINEMA 4D-test the CPU. The table shows the arithmetic average after 5 runs.

The test display was carried out using the colorimeter X-Rite i1Display Pro and HCFR application.

The time of the laptop battery was tested in two modes. The first version of the load — surfing the web — involves alternately opening and closing tabs sites, and with an interval of 30 seconds. For this test, use the Google Chrome browser up to date at the time of testing version. In the second mode, plays 4K video format is x265 (HEVC) in VLC player Media Player with activated snooze function.

In all cases, exhibited the same display brightness 200 CD/m2. During testing, the laptop is running in “Balanced” and goes into “energy Efficiency” after the battery runs out 80% is the standard scheme of the operating system Windows 10. Fatigue testing are made off the speakers and disconnected a backlit keyboard if available.

In games and other applications presents the results of the following laptops:

The test
Model Screen Processor RAM Graphics Drive Battery
HUAWEI MateBook X Pro 13,9″, 3000 × 2000, LTPS Intel Core i5-8250U, 4/8 cores/threads, and 1.6 (3,4) GHz, 15 W 8 GB DDR3-2133 dual-channel HD 620 + GeForce MX150 SSD, 256 GB, PCI Express 3.0 x4 57,4 W⋅h
ASUS ZenBook 14 UX433FN 14″, 1920 × 1080, IPS Intel Core i7-8565U, 4/8 cores/threads, 1.8 m (4,6) GHz, 15 W 16 GB DDR3-2133 dual-channel HD 620 + GeForce MX150 SSD, 512 GB, PCI Express 3.0 x2 50 W⋅h
ASUS ZenBook 15 UX533FD 15,6″, 1920 × 1080, IPS Intel Core i7-8565U, 4/8 cores/threads, 1.8 m (4,6) GHz, 15 W 16 GB, DDR3-2400 dual-channel HD 620 + GeForce GeForce GTX 1050 Max-Q SSD, 512 GB, PCI Express 3.0 x2 73 W⋅h
ASUS ZenBook 14 UX434FL 14″, 1920 × 1080, IPS Intel Core i7-10510U, 4/8 cores/threads, 1,8 (4,9) GHz, 15 W 16 GB, DDR3-2400 dual-channel HD 620 + GeForce MX250 SSD, 512 GB, PCI Express 3.0 x2 50 W⋅h

Display and sound

In the market you can find versions of the ZenBook 14 UX434FL that use different matrices. In our case we use multi-touch IPS panel AUO AUO323D equipped with a glossy finish and supports a resolution of Full HD.

The minimum luminance level is white the screen is 17 CD/m2 and a maximum of 302 CD/m2. It is obvious that a laptop will be convenient to use both day and night. High brightness — a nice feature when dealing with glossy panels. The contrast from AUO AUO323D too high, it is 1075:1, so watching movies on the laptop quite nicely.



Color gamut


Color temperature

Overall, the ZenBook display 14 UX434FL calibrated at the secondary level. See for yourself: color even though the temperature is stable throughout the range, but is always above the reference value of 6500 K. the Inflated and gamma of 2.26, that is a little more standard 2.2. Coverage of the space sRGB is also not absolute, though quite close to it. In the end, the average deviation for grey scale was 4.3, and a maximum of 8.92. The average error in the test ColorChecker24 was 4.3 with the maximum figure of 8.36.

And yet the screen ZenBook 14 UX434FL will not fit, perhaps, only to those who need accurately calibrated display. The rest to work with your notebook turned out to be very convenient: at AUO AUO323D excellent viewing angles, the glare on the edges I have found, like the use of PWM, and in all the brightness range of the screen.

Temperature, frequency and noise

The 3DNews laboratory has tested many ultrabooks, which used chips families Refresh Kaby Lake and Whiskey Lake. In August, Intel introduced the 10th generation of Core chips, which includes the device of two families: Comet Lake and Ice Lake. In the first case we are talking about processors manufactured in 14 nm process. In fact, we are dealing with a purely cosmetic update, Whiskey Lake. You could even say that the chip maker continues to use the Skylake microarchitecture, which next year turns for 5 years. Here the greatest interest represents a 6-core model Core i7-10710U. Insanely curious to know how the chip feels in ultrabooks, because its standard TDP is only 15 watts.

Family of Ice Lake submitted by processors, for 10-nm process technology. They are built on the microarchitecture Sunny Cove, which, according to Intel, offers up to 18 % increase in instructions per clock. A significant difference between the collections, however, belong to the same generation of Core is also used integrated graphics. If the Comet Lake, use the standard iGPU equipped with 24 blocks of the EU, in some CPU Ice Lake integrated graphics Iris Plus — it could be the kernel as 64 and with 48 Executive boxes. Moreover, Ice Lake is equipped with a dual channel memory controller that supports the standard LPDDR4-3733 and DDR4-3200.

Quad-core Core i7-10510U used in the ZenBook 14 UX434FL, refers to the generation Comet Lake. Base frequency of the chip is 1.8 GHz, but in Boost-mode, the frequency of the core can reach 4.9 GHz. When working in eight strand mode, the frequency of the Core i7-10510U in theory can grow up to 4.3 GHz.

It is important to note that the characteristics relevant to the value of TDP is 15 watts. At the same time, the laptop manufacturer may reduce the estimated power of 5 W or increase it to 10 watts.

For comparison recall that for single-load frequency of the Core i7-8565U, belonging to the family Whiskey Lake, reaches 4.6 GHz, and when loading all four cores at 4.1 GHz. Turns out, Comet Lake-chip should be faster than 300 MHz. Only here is it possible such a difference in frequency in reality?

The question, however, is rhetorical. Remember the old Core i7-7700K? When loading all four cores it runs at frequency 4.4 GHz. Only here in the program LinX 0.7.0 using AVX2 instructions, the level of power consumption exceeds 100 watts. What about Core i7-10510U with its 15-watt TDP?

ASUS ZenBook 14 UX434FL iron behaves as follows. Just for a few seconds, the system allows the processor to work with a power limit of 35 watts. At this time, the frequency of the chip is kept quite high, but the processor heats up to 94 degrees on the very hot core. Still, with this load can not cope any one ultrabusy cooler. Then the power consumption of the Core i7-10510U reduced to standard 15 watt — and as a result, the frequency periodically falls to 1.1 GHz (we see the 700-megahertz trottling is not associated with overheating), and the temperature up to 68 degrees Celsius. Working in this mode the laptop is not very loud — from a distance of 30 cm, the sound level meter was fixed to 40.7 dBA.

LinX is a program which is very strongly loads the CPU. In most cases, the ultrabook will not be used in such conditions. However, 15 watts is still very hard limiting factor. In the screenshot above, we see that in Adobe Premier Pro 2019 during rendering 4K video the frequency of the Core i7-10510U already lowered to 1.4 GHz (again, we are witnessing the throttle, and not associated with overheating of the CPU), and the temperature of the hottest CPU core is kept at 68-77 degrees Celsius. Yes, compared to what it was in LinX, the CPU was operated at a higher frequency (about 400 MHz), but the TDP of the chips Comet Lake still limits their performance.

After testing a variety of ultrabooks, equipped with a 4-core processors Refresh Kaby Lake, Whiskey Lake and now Comet Lake, I boldly declare that you will not find in the market model, where a processor in a multithreaded application will run on maximum. In such a device, or they can’t handle cooling system, or the limit of capacity set by the manufacturer. High frequencies of processors can be achieved in light of the modes — for example, when you run the web browser.

The performance of the CPU, memory, and disk subsystem

All of the above can be summarized in one sentence: the CPU performance in a laptop depends on several factors, such as the power supply and the electrical parameters of the CPU. There is therefore nothing surprising in the fact that Core i7-10510U used in the ZenBook 14 UX434FL, it is not always faster than, for example, Core i7-8565U installed in the ZenBook 14 UX433FN. My advice: when choosing a ultrabook do not chase the passport characteristics of components such as the processor and graphics.

Don’t forget that during the performance of the CPU in the laptop is not only the chip, but also RAM and storage. In the ZenBook 14 UX434FL, by the way, used a very interesting SSD — Intel Optane HBRPEKNX0202A. In this drive, on one circuit Board located buffer memory capacity of 32 Gbytes and of the cell type QLC volume of 512 GB. On the one hand, SSD has not too high linear speeds of reading and writing (for standard NVMe), but the reading of 4K blocks is done at a very good speed more than 100 MB/s. In General, due to Intel Optane HBRPEKNX0202A ultrabook is very fast.

The performance of the SSD

Graphics performance

In the ZenBook 14 UX434FL applied discrete graphics GeForce MX250. From GeForce MX150 it differs… nothing. Formally, the frequency is updated, the GPU needs to be higher on the “whole” 50 MHz (vs 1518 1468 MHz), but I once again draw your attention that we are dealing with the ultrabook. But because the frequency characteristics of GeForce GeForce MX150 and MX250 can differ considerably from model to model. Here in the ZenBook 14 UX434FL the declared frequency of the graphic chip is 937 (1038) MHz. In games it varies from 1493 to 1633 MHz. It is obvious that manufacturers of ultrabooks to “cut” the megahertz in the schedule in order to increase the efficiency of the cooling system and the autonomy of the device.

The GPU of the laptop in games is heated to a maximum of 76 degrees Celsius is a good indicator. In this case only up to 71 degrees Celsius heated the hot core Core i7-10510U. In General, cooler ZenBook 14 UX434FL fully copes with its task.

As for performance, the test model is slightly ahead of the ZenBook ultrabook 14 UX433FN that uses graphics GeForce MX150. This means that all of my arguments regarding the “new” NVIDIA is correct. Well, “SENuke” we could play in my spare time, although my list of priorities when choosing an ultrabook such as the “Speed games”, is one of the last places. The schedule in such devices is used to perform mainly the task of a different kind: the speed of the Internet browser, playback of various video formats and so on.

World of Tanks 1.0 EnCore, benchmark, Full HD, FPS
The quality of the graphics MIN AVG MIN AVG
ASUS ZenBook UX434FL 14 (Core i7-10510U + GeForce MX250) ASUS ZenBook UX433FN 14 (Core i7-8565U + GeForce MX150)
Ultra 19 24 19 27
Secondary 44 68 38 63
Minimum 76 182 65 170

Work offline

The laptop has a lithium-polymer battery of three cells with a total capacity of 50 W⋅h. the Manufacturer claims that the device can work up to 12.3 hours from a single battery charge. Our methodology includes more resource-intensive modes of operation laptops. For example, the brightness of the screen (the main consumer of electricity in any laptop) is 200 CD/m2 is quite comfortable figure for use in the daytime. In the end, the test version of the ZenBook 14 UX434FL stayed in the mode of web surfing, seven hours. I believe the stated 12+ hours realistically get, but will need to further reduce the screen brightness. And yet, according to our classification, if the device is in the mode of web surfing last more than six hours, its range can be safely considered good. Note that during testing, the ScreenPad 2.0 worked in touchpad mode, but has not been fully turned off.

Time battery life, 200 CD/m2
Web (open tabs in Google Chrome) 7 h 0 min
View the video (x265, HEVC, 4K) 6 h 29 min


This year we tested a few ASUS ultrabooks: ZenBook UX433FN 14, 15 UX533FD ZenBook and ZenBook S13 UX392FA. Bad devices are not among them, and novelty is not an exception. As all of these ultrabooks discussed in this article, the model has recognizable features and proprietary features of the devices the Taiwanese company. I have no complaints about the build quality of the laptop and its functionality. Testing showed that the ZenBook 14 UX434FL equipped with efficient cooling system, and a good keyboard, screen and housing. This ultrabook is long running on battery, and its performance is not worse than other models gathered on the same platform. In General, ASUS has turned out another good companion for life: light, compact and hardy.

And yet ZenBook 14 UX434FL there is one feature that even puts this above other ultrabook models ASUS (and other competitors), but it certainly makes it special. This, of course, talking about the second display ScreenPad 2.0. I have already described its features and functionality. Is it possible to live without such bells and whistles in ultrabot? Yet how can! However, some users, sure, the presence of a ScreenPad 2.0 definitely. So, ZenBook 14 UX434FL will find its fans.


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