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ASUS ZenBook S UX391UA specs, features, and analysis

Here's what you need to know about 2018 ASUS ZenBook S UX391UA including price, display info, CPU, RAM, storage, battery, and more.

ASUS ZenBook S UX391UA See at Amazon Compare

Availability	ASUS ZenBook S UX391UA
Released	2018

ASUS ZenBook S UX391UA Price
	ASUS ZenBook S UX391UA-XB71-R Ultra-thin and light 13.3-inch Full HD Laptop, Intel Core i7-8550U, 8GB RAM, 256GB M.2 SSD, Windows 10 Pro, FP Sensor, Thunderbolt, Burgundy Red By ASUS $1,130.00 $1,199.99 6% OFF	See at Amazon
	Asus ZenBook S UX391UA-XB74T Ultra-Thin and Light 13.3-Inch UHD 4K Touch Laptop, Intel Core i7-8550U, 16GB 2133MHz RAM, 512GB PCIe G3x4 SSD, Windows 10 Pro, FP Sensor, Thunderbolt By ASUS $599.99	See at Amazon
	ASUS Zenbook S 13 OLED Laptop, 13.3” OLED 3K 60Hz Display, Intel Evo Certified, Intel Core Ultra 7 155U CPU, Intel Graphics, 16GB RAM, 512GB SSD, Windows 11 Home, Basalt Gray, UX5304MA-ES71 By ASUS $1,199.99	See at Amazon
	ASUS Zenbook S 13 Flip OLED 13.3” OLED Touch Display, Intel Evo Platform, Core i7-1260P CPU, Intel Iris Xe Graphics, 16GB RAM, 512GB SSD, Windows 11 Home, Ponder Blue, UP5302ZA-DH74T By ASUS $1,290.00 $1,499.99 14% OFF	See at Amazon
	ASUS Zenbook 14 Flip OLED Laptop, 14” OLED Touch Display, Intel Evo Platform, Intel Core i5-1340P CPU, Intel Iris Xe Graphics, 16GB RAM, 512GB SSD, Windows 11 Home, Foggy Silver, UP3404VA-DS54T-S By ASUS $1,049.00	See at Amazon

Exterior	ASUS ZenBook S UX391UA
Dimensions	12.24” x 8.39” x 0.51” (311 x 213 x 12.9 mm)
Weight	2.20 lbs (1.0 kg) With anti-glare display. 2.31 lbs (1.05 kg) WIth glossy display.
Colors	Deep Dive Blue Burgundy Red
Keyboard and Trackpad	Keyboard Full-size backlit with 1.2mm key travel Touchpad with fingerprint reader Glass-covered with integrated fingerprint sensor supporting Windows Hello; intelligent palm-rejection Precision Touchpad (PTP) technology supports up to four-finger smart gestures

Display	ASUS ZenBook S UX391UA
Size	13.3 Inches
Info	13.3” LED-backlit 4K UHD (3840 x 2160) 16:9 glossy touchscreen 13.3” LED-backlit Full HD (1920 x 1080) 16:9 glossy screen 13.3” LED-backlit Full HD (1920 x 1080) 16:9 anti-glare screen 5.9mm-thin bezel with 85% screen-to-body ratio Wide 100% sRGB color gamut IPS-level wide-view technology ASUS Eye Care technology for up to 30% blue-light reduction

Ports	ASUS ZenBook S UX391UA
Ports	2 x Type-C™ USB 3.1 Gen 2 (Thunderbolt™ 3) 1 x Type-C™ USB 3.1 Gen 2 Note All three ports support fast charging, data transfers, and display connectivity.

Internal Specs	ASUS ZenBook S UX391UA
Processor	8th Gen Intel® Core™ i5-8250U 4 cores, 8 threads, 1.60 → 3.40 GHz, 6MB SmartCache, 15W 8th Gen Intel® Core™ i7-8550U 4 cores, 8 threads, 1.80 → 4.00 GHz, 8MB SmartCache, 15W
Geekbench 5 Single Core ASUS ZenBook S UX391UA1 8th Gen Intel® Core™ i5-8250U77189.65% 2 8th Gen Intel® Core™ i7-8550U860100.00% 0860 Geekbench 5 Multi-Core ASUS ZenBook S UX391UA1 8th Gen Intel® Core™ i5-8250U1,97177.08% 2 8th Gen Intel® Core™ i7-8550U2,557100.00% 02,557
Integrated Graphics	8th Gen Intel® Core™ i5-8250U Intel® UHD Graphics 620 24 Execution Units, 300 → 1100 MHz 8th Gen Intel® Core™ i7-8550U Intel® UHD Graphics 620 24 Execution Units, 300 → 1150 MHz
Memory	8GB 16GB 2133MHz LPDDR3 SDRAM Onboard Memory
Storage	256GB SATA3 SSD 512GB 1TB PCIe® Gen3 SSD M.2

Connectivity	ASUS ZenBook S UX391UA
Wi-Fi	Dual-band 802.11ac Wi-Fi
Bluetooth	Bluetooth 4.2

Battery	ASUS ZenBook S UX391UA
Size	50Wh (4-cell lithium-polymer battery)
Battery Life	Up to 13.5 hours of battery life
Power Supply	65W USB Type-C power adapter Output [email protected]

Software	ASUS ZenBook S UX391UA
OS	Windows 10 Home Windows 10 Pro
Built-in Apps	ASUS Battery Health Charging ASUS Splendid Quiet Fan

Camera & Audio	ASUS ZenBook S UX391UA
Camera	Front-facing camera 720p (1280 x 720 HD) camera.
Audio	ASUS SonicMaster stereo audio system with surround-sound; smart amplifier for maximum audio performance Array microphone with Cortana and Alexa1 voice-recognition support 3.5mm headphone jack Long-travel voice coils for improved low-frequency response Certified by Harman Kardon

Misc	ASUS ZenBook S UX391UA
Inking	Supports ASUS Pen
Sensors	Fingerprint sensor
Security	One-touch access with Windows Hello
In the box	ZenBook S (UX391) Protective sleeve USB-C™ power adaptor (65W) ASUS Mini Dock (or USB-C™ to USB-A dongle and USB-C™ to HDMI dongle) ASUS Pen (optional)

Key Features	ASUS ZenBook S UX391UA
At Glance	Released in 2018 16:9 4K 13.3” 2160p 60Hz Weight 2.20 lb 1.00 kg Up to Intel Core i7-8550U 4C/8T, 1.80 → 4.00 GHz Geekbench 5 860 Single Core Geekbench 5 2,557 Multi-Core With integrated Intel® UHD Graphics 620 24 Execution Units, 300 → 1150 MHz Configurable up to 16GB 2133 MHz LPDDR3

Photos

Our analysis and reviews

What we like

Reasons to like about ASUS ZenBook S UX391UA.

ASUS ZenBook S UX391UA exceed all minimum system requirements for Windows 11.

Requirements	ASUS ZenBook S UX391UA
Secure Boot	Yes
TPM 2.0	TPM 2.0
Processor	Intel Core i5-8250U → Intel Core i7-8550U
4GB RAM	8GB → 16GB
64GB Drive	256GB → 2TB
2 Cores CPU	4 cores

According to ASUS, the ASUS ZenBook S UX391UA lasts up to 13.5 hours of battery life.

Up to 13.5 hours of battery life

ASUS ZenBook S UX391UA comes with a single removable M.2 SSD slot that you can replace and upgrade in the future. Learn more

Storage Slots	ASUS ZenBook S UX391UA
M.2	x1

What we don't like

Reasons not to like about ASUS ZenBook S UX391UA.

The memory on ASUS ZenBook S UX391UA is soldered to the motherboard, and there is no additional RAM slot for expansion. Since you can't change or add more RAM after you buy, you want to make sure you pick the configuration with the right amount of memory at the initial purchase. Learn more

Memory	ASUS ZenBook S UX391UA
Slots	0 - Onboard
Type	LPDDR3
Speed	2133 MHz