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ASUS ZenBook 14X OLED review: The gorgeous display comes at a price

By Kenny Yeo - 21 Nov 2021

Performance & conclusion

Performance analysis

The ZenBook 14X OLED is powered by a Core i7 Tiger Lake processor and features NVIDIA discrete graphics.

The ASUS ZenBook 14X OLED is powered by the same Core i7 version of Intel's Tiger Lake processor that is found in nearly every other notebook in its class. It also has 16GB of memory and is one of the few notebooks to feature discrete NVIDIA GeForce MX450 graphics. We will be comparing its performance against other comparable ultraportable notebooks like ASUS' own ZenBook 14 Ultralight, the Acer Swift 5, Dell XPS 13, and more.

Model Display Processor Memory Storage Graphics
ASUS ZenBook 14X OLED 14-inch, WQXGA+, OLED, touchscreen Intel Core i7-1165G7 16GB 1TB SSD NVIDIA GeForce MX450
Acer Swift 5 14-inch, Full-HD, touchscreen Intel Core i7-1165G7 16GB 1TB SSD Intel Iris Xe
ASUS ZenBook 14 Ultralight 14-inch, Full-HD Intel Core i7-1165G7 16GB 1TB SSD NVIDIA GeForce MX450
Dell XPS 13 13.4-inch, 4K+, touchscreen Intel Core i7-1165G7 16GB 512GB SSD Intel Iris Xe
Lenovo Yoga Slim 7i Carbon 13.3-inch, 2560 x 1600 pixels Intel Core i7-1165G7 16GB 512GB SSD Intel Iris Xe
LG gram 14 14-inch, Full-HD+ Intel Core i7-1165G7 16GB 512GB SSD Intel Iris Xe
MSI Prestige 14 Evo 14-inch, Full-HD Intel Core i7-1185G7 16GB 512GB SSD Intel Iris Xe
Razer Book 13 13.4-inch, 4K+, touchscreen Intel Core i7-1165G7 16GB 512GB SSD Intel Iris Xe

Performance was generally very good. Perhaps because of its IceCool Plus cooling system, the ZenBook 14X OLED confidently outscored the ZenBook 14 Ultralight, which shares the same specifications. It turned out the best scores on most benchmarks including PCMark 10, Cinebench, WebXPRT 3, and Tomb Raider. However, thermal throttling is an issue as evidenced by how frame rates dropped after a couple of runs on Tomb Raider. If it’s any consolation, this is an issue that plagues most ultraportable notebooks. And even at its lowest, the ZenBook 14X OLED was still managed the highest frame rates. Even at its poorest, it recorded close to 60fps on the more intensive High graphics setting.


Battery life

Note: Battery tests were conducted using PCMark 10's battery benchmark with display set to 100% brightness.

Battery life is arguably the ZenBook 14X OLED’s downfall. Despite having the same battery capacity and similar specifications as the ZenBook 14 Ultralight, it managed just over 5 hours, or 313 minutes to be exact. That’s a whopping 218 minutes or 41% less than the ZenBook 14 Ultralight. I had expected the ScreenPad as well as the higher resolution and brightness of the main display to put a greater strain on the battery but certainly not to this extent. Looking at the power consumption figures, we can see that on the Modern Office workload, it was consuming about double the energy of the ZenBook 14 Ultralight. Consequently, the ZenBook 14X OLED recorded the lowest Portability Index scores among notebooks of its class.


Is this the best ZenBook?

The ZenBook 14X OLED makes a strong case for being the best all-around 14-inch ZenBook that ASUS currently sells. Obviously, that OLED display is a large part of the reason why, but its performance was also very good and it has a good offering of ports. The price is hard to fault too because you’d expect a notebook with an OLED display to cost substantially more but that’s not the case. Compared to a ZenBook 14 Ultralight with similar specifications, the ZenBook 14X OLED is just S$200 more (S$2,398). That’s a premium I think most people will gladly pay once they see how just much better the OLED display is.

If a great display and performance are important to you, the ZenBook 14X OLED ticks those boxes.

Where the ZenBook 14X OLED disappoints is in its battery life. No matter how you look at it, at just over five hours, it’s one of the poorest showings in its class. Sure, you could probably stretch its battery to six or even seven hours if you dial back the brightness but it doesn’t hide the fact that a ZenBook 14 Ultralight with comparable system specifications lasted nearly 70% longer. Thermal throttling is a concern too, though, to be fair, it’s a problem that plagues all notebooks of this class. However, it’s something to note especially if you intend to run intensive applications like gaming or video-editing for extended periods. 

Ultimately, the ZenBook 14X OLED’s well below-average battery life means it’s probably not for everyone. And luckily, our great ultraportable notebook shootout shows that there is no shortage of alternatives But if it were me, I'll opt for the ZenBook 14 Ultralight. It's cheaper now (S$2,198) and while it's display is no where near as nice, it counters with slimmer, lighter dimensions and excellent battery life. For me, these are far more important considerations for an ultraportable notebook. Nevertheless, its excellent display and class-leading performance should find itself no shortage of fans, especially if you don't expect yourself to be moving around or travelling much.



You can find the ASUS ZenBook 14X OLED UX5400 for S$2,398 on ASUS' online storeLazada, and Shopee.

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  • Design 8.5
  • Features 8.5
  • Performance 8.5
  • Value 7.5
  • Mobility 7
The Good
Fantastic OLED display
Good performance
Two USB-C Thunderbolt 4 ports
Full-size USB-A and HDMI ports
Large trackpad
Decently priced
The Bad
Thermal throttling can be an issue
Below average battery life
ScreenPad's utility is debatable
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