ASUS ZenBook S UX391FA vs. Asus ZenBook 3 UX390UA: Full specs comparison

We have comprehensively analyzed the technical specifications for the ASUS ZenBook S UX391FA and Asus ZenBook 3 UX390UA models. Our report includes intricate details such as the CPU, memory, storage, battery life, display quality, and other features.

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ASUS ZenBook S UX391FA image

ASUS ZenBook S UX391FA

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Asus ZenBook 3 UX390UA image

Asus ZenBook 3 UX390UA

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ASUS ZenBook S UX391FA Pros

Reasons that ASUS ZenBook S UX391FA is better than Asus ZenBook 3 UX390UA.

Newer manufacturing

2019 vs. 2017

Significantly faster CPU performance

Intel Core i7-8565U inside ASUS ZenBook S UX391FA has a 33% better multi-core CPU performance score than the Intel Core i7-7500U inside Asus ZenBook 3 UX390UA.

Geekbench 5 multi-core score
ASUS ZenBook S UX391FA - Intel Core i7-8565U
2,327
ASUS ZenBook S UX391FA - Intel Core i5-8265U
2,132
Asus ZenBook 3 UX390UA - Intel Core i7-7500U
1,744
Asus ZenBook 3 UX390UA - Intel Core i5-7200U
1,611
6% larger display

ASUS ZenBook S UX391FA has a 13.3-inch screen size 6% larger than the 12.5-inch Asus ZenBook 3 UX390UA.

Display size
ASUS ZenBook S UX391FA
13.3-inch
Asus ZenBook 3 UX390UA
12.5-inch

Asus ZenBook 3 UX390UA Pros

Reasons that Asus ZenBook 3 UX390UA is better than ASUS ZenBook S UX391FA.

About 10% lighter

Asus ZenBook 3 UX390UA weighed 2.0 pounds, 10% lighter than the 2.20 pounds ASUS ZenBook S UX391FA.

WeightASUS ZenBook S UX391FAAsus ZenBook 3 UX390UA
Pound
2.20 lbs.
2.0 lbs.
Kilogram
1.00 kg
0.91 kg

Key Similars

Similar characteristics share between ASUS ZenBook S UX391FA and Asus ZenBook 3 UX390UA.

Supports the same maximum memory size of up to 16GB

Both laptops supports up to 16GB of system memory.

Max system memory size
ASUS ZenBook S UX391FA
16 GB
Asus ZenBook 3 UX390UA
16 GB
Uses the same memory type and speed

Both laptops supports the same 2133MHz LPDDR3 RAM.

Memory type and speed
ASUS ZenBook S UX391FA - LPDDR3
2,133 MHz
Asus ZenBook 3 UX390UA - LPDDR3
2,133 MHz

Prices

Here are the latest price updates and offers for both devices.

ASUS ZenBook S UX391FA Price
ASUS ZenBook S Ultra-Thin and Light Laptop, 13.3” UHD 4K Touch, 8th Gen Intel Core i7-8565U Processor, 16GB RAM, 512GB PCIe SSD, FP Sensor, Thunderbolt, Windows 10 Professional - UX391FA-XH74T
 ASUS ZenBook S Ultra-Thin and Light Laptop, 13.3” UHD 4K Touch, 8th Gen Intel Core i7-8565U Processor, 16GB RAM, 512GB PCIe SSD, FP Sensor, Thunderbolt, Windows 10 Professional - UX391FA-XH74T
By Asus
$1,539.00
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ASUS Zenbook S 13 OLED Laptop, 13.3” OLED 3K 60Hz Display, Intel Evo Certified, Intel Core Ultra 7 155U CPU, Intel Graphics, 32GB RAM, 1TB SSD, Windows 11 Pro, Basalt Gray, UX5304MA-XS76
 ASUS Zenbook S 13 OLED Laptop, 13.3” OLED 3K 60Hz Display, Intel Evo Certified, Intel Core Ultra 7 155U CPU, Intel Graphics, 32GB RAM, 1TB SSD, Windows 11 Pro, Basalt Gray, UX5304MA-XS76
By ASUS
$1,399.99
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ASUS ZenBook S Ultra Slim Laptop, 13.9" 3300x2200 3:2 500nits Touch, Intel Evo Core i7-1165G7, 16GB RAM, 1TB SSD, Thunderbolt 4, TPM, Windows 10 Pro, AI Noise-Cancellation, Jade Black, UX393EA-XB77T
 ASUS ZenBook S Ultra Slim Laptop, 13.9" 3300x2200 3:2 500nits Touch, Intel Evo Core i7-1165G7, 16GB RAM, 1TB SSD, Thunderbolt 4, TPM, Windows 10 Pro, AI Noise-Cancellation, Jade Black, UX393EA-XB77T
By ASUS
$1,259.00
$1,699.99 26% OFF
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Asus ZenBook 3 UX390UA Price
ASUS ZenBook 3 UX390UA 12.5" Ultraportable Laptop Intel Core i5-7200U KabyLake 8GB RAM 256GB SSD with Fingerprint Sensor and Harman Karson Audio, Silver Gray
 ASUS ZenBook 3 UX390UA 12.5" Ultraportable Laptop Intel Core i5-7200U KabyLake 8GB RAM 256GB SSD with Fingerprint Sensor and Harman Karson Audio, Silver Gray
By ASUS
$259.00
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Synvy Anti Blue Light Tempered Glass Screen Protector Film, compatible with ASUS ZenBook 3 UX390UA 12.5" Active Area Cover Only, 9H Protective Film Protectors
 Synvy Anti Blue Light Tempered Glass Screen Protector Film, compatible with ASUS ZenBook 3 UX390UA 12.5" Active Area Cover Only, 9H Protective Film Protectors
By Film for ASUS ZenBook 3 UX390UA
$34.96
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Synvy Tempered Glass Screen Protector Film, compatible with ASUS ZenBook 3 UX390UA 12.5" Active Area Cover Only, 9H Protective Film Protectors
 Synvy Tempered Glass Screen Protector Film, compatible with ASUS ZenBook 3 UX390UA 12.5" Active Area Cover Only, 9H Protective Film Protectors
By Film for ASUS ZenBook 3 UX390UA
$32.96
See at Amazon

Specs Comparison

Availability

ASUS ZenBook S UX391FAAsus ZenBook 3 UX390UA
Released20192017

Exterior

ASUS ZenBook S UX391FAAsus ZenBook 3 UX390UA
Dimensions12.24” x 8.39” x 0.51” (311 x 213 x 12.9 mm)11.65” x 7.52” x 0.46” (296 x 191.2 x 11.9 mm)
Weight
  • 2.20 lbs (1.0 kg)
    With anti-glare display.
  • 2.31 lbs (1.05 kg)
    WIth glossy display.
2.0 lbs (910 g)
Colors
Deep Dive Blue
Royal Blue Rose Gold Quartz Grey
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
Illuminated chiclet keyboard

Display

ASUS ZenBook S UX391FAAsus ZenBook 3 UX390UA
Size13.3 Inches12.5 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
12.5" (16:9) LED-backlit FHD (1920x1080) 60Hz Panel with 72% NTSC

Ports

ASUS ZenBook S UX391FAAsus ZenBook 3 UX390UA
  • 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.
  • 1 x Type-C USB 3.0 (USB 3.1 Gen 1)
    With display and power delivery support.
  • 1 x COMBO audio jack

Internal Specs

ASUS ZenBook S UX391FAAsus ZenBook 3 UX390UA
Processor
  1. 8th Gen Intel® Core™ i5-8265U
    4 cores, 8 threads, 1.60 → 3.90 GHz, 6MB SmartCache, 15W
  2. 8th Gen Intel® Core™ i7-8565U
    4 cores, 8 threads, 1.80 → 4.60 GHz, 8MB SmartCache, 15W
  1. 7th Gen Intel® Core™ i5-7200U
    2 cores, 4 threads, 2.50 → 3.10 GHz, 3MB SmartCache, 15W
  2. 7th Gen Intel® Core™ i7-7500U
    2 cores, 4 threads, 2.70 → 3.50 GHz, 4MB SmartCache, 15W
Integrated Graphics
  1. 8th Gen Intel® Core™ i5-8265U
    Intel® UHD Graphics 620
    24 Execution Units, 300 → 1100 MHz
  2. 8th Gen Intel® Core™ i7-8565U
    Intel® UHD Graphics 620
    24 Execution Units, 300 → 1150 MHz
  1. 7th Gen Intel® Core™ i5-7200U
    Intel® HD Graphics 620
    24 Execution Units, 300 → 1000 MHz
  2. 7th Gen Intel® Core™ i7-7500U
    Intel® HD Graphics 620
    24 Execution Units, 300 → 1050 MHz
Memory
8GB 16GB
2133MHz LPDDR3 SDRAM Onboard Memory
16GB
2133 MHz LPDDR3 onboard memory
Storage
256GB 512GB 1TB
PCIe® Gen3 SSD M.2
  • 512GB
    SATA 3.0 SSD
  • 512GB
    PCIe® Gen3 SSD

Connectivity

ASUS ZenBook S UX391FAAsus ZenBook 3 UX390UA
Wi-FiDual-band 802.11ac gigabit-class Wi-FiIntegrated Wi-Fi 5 (802.11 ac)
BluetoothBluetooth 5.0Bluetooth 5.0

Battery

ASUS ZenBook S UX391FAAsus ZenBook 3 UX390UA
Size50Wh (4-cell lithium-polymer battery)40Wh (6-cell lithium-polymer battery)
Battery LifeUp to 19.4 hours of battery lifeUp to 9 hours of battery life
Power Supply65W USB Type-C power adapter
Output [email protected]
45W USB-C power adapter
Output 20 [email protected].

Software

ASUS ZenBook S UX391FAAsus ZenBook 3 UX390UA
OS
  • Windows 10 Home
  • Windows 10 Pro
Windows 10 Pro
Built-in Apps
ASUS Battery Health Charging ASUS Splendid Quiet Fan
MyASUS

Camera & Audio

ASUS ZenBook S UX391FAAsus ZenBook 3 UX390UA
CameraFront-facing camera
720p (1280 x 720 HD) camera.
  • Front-facing camera
    VGA quality 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
  • Quad-speaker array: true surround sound
  • Five-magnet speaker design
  • Supports Windows 10 Cortana
  • ASUS SonicMaster Premium Technology
  • Harman Kardon audio

Misc

ASUS ZenBook S UX391FAAsus ZenBook 3 UX390UA
InkingSupports ASUS Pen-
Sensors
  • Fingerprint sensor
  • Fingerprint sensor
Security
  • One-touch access with Windows Hello
  • 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 UX391FAAsus ZenBook 3 UX390UA
At Glance
Released in
2019
16:9 4K
13.3”
2160p 60Hz
Weight
2.20 lb
1.00 kg
Up to
Intel Core i7-8565U
4C/8T, 1.80 → 4.60 GHz
Geekbench 5
804
Single Core
Geekbench 5
2,327
Multi-Core
With integrated
Intel® UHD Graphics 620
24 Execution Units, 300 → 1150 MHz
Configurable up to
16GB
2133 MHz LPDDR3
Released in
2017
16:9 FHD
12.5”
1080p 60Hz
Weight
2.0 lb
0.91 kg
Up to
Intel Core i7-7500U
2C/4T, 2.70 → 3.50 GHz
Geekbench 5
766
Single Core
Geekbench 5
1,744
Multi-Core
With integrated
Intel® HD Graphics 620
24 Execution Units, 300 → 1050 MHz
16GB
2133 MHz LPDDR3

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