In depth comparison and review of ASUS VivoBook S14 (S431FA) and ASUS ZenBook S UX391UA (ET087T). Compare sizes, performance, storage capacities, batteries and other important specifications and features to easily choose the right laptop for you. Our goal is to help you uncover differences between the products and find the laptop that will best fit your needs.
Advantages and disadvantages of ASUS VivoBook S14 (S431FA) based on its technical characteristics, features, user experience, expert reviews and price level.
compact lightweight design
vivid full hd display
fast ssd storage
efficient intel processor
reasonable price point
average battery life
no dedicated gpu
limited port selection
mediocre sound quality
Advantages and disadvantages of ASUS ZenBook S UX391UA (ET087T) based on its technical characteristics, features, user experience, expert reviews and price level.
affordable price
solid build quality
decent processor performance
ample storage capacity
good keyboard layout
average display quality
no backlit keyboard
limited graphics performance
mediocre battery life
| DESIGN AND DIMENSIONS | ASUS VivoBook S14 (S431FA) | ASUS ZenBook S UX391UA (ET087T) |
|---|
| Product Type | Notebook | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 32.33 cm x 21.37 cm x 1.8 cm | 31.1 cm x 21.3 cm x 1.29 cm |
| Weight | 1.4 kg | 1 kg |
| Colour | Transparent silver | Deep dive blue |
| DISPLAY | ASUS VivoBook S14 (S431FA) | ASUS ZenBook S UX391UA (ET087T) |
|---|
| Screen Size (Type) | 14" | 13.3" |
|---|---|---|
| LCD Backlight Technology | LED backlight | LED backlight |
| Screen Resolution | 1920 x 1080 (Full HD) | 1920 x 1080 (Full HD) |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | 16:9 |
| Image Brightness | 250 cd/m² | 300 cd/m² |
| Colour Gamut | 72% NTSC | 72% NTSC |
| Features | Anti-glare, NanoEdge display, 178° viewing angle | Ultra Slim Design, anti-glare, WideView, 178° horizontal and vertical viewing angle |
| PROCESSOR | ASUS VivoBook S14 (S431FA) | ASUS ZenBook S UX391UA (ET087T) |
|---|
| CPU | Intel Core i5 (8th Gen) 8265U / 1.6 GHz | Intel Core i7 (8th Gen) 8550U / 1.8 GHz |
|---|---|---|
| Max Turbo Speed | 3.9 GHz | 4 GHz |
| Number of Cores | Quad-Core | Quad-Core |
| Cache | - | 8 MB |
| 64-bit Computing | Yes | Yes |
| Features | Intel Turbo Boost Technology 2.0 | Intel Turbo Boost Technology 2.0 |
| MEMORY | ASUS VivoBook S14 (S431FA) | ASUS ZenBook S UX391UA (ET087T) |
|---|
| RAM | 8 GB (provided memory is soldered) | 8 GB (provided memory is soldered) |
|---|---|---|
| RAM Type | LPDDR3 SDRAM | LPDDR3 SDRAM |
| Speed | 2133 MHz | 2133 MHz |
| Rated Speed | - | 2133 MHz |
| STORAGE | ASUS VivoBook S14 (S431FA) | ASUS ZenBook S UX391UA (ET087T) |
|---|
| Main Storage Size (HDD/SSD) | 256 GB SSD M.2 PCIe 3.0 x2 - NVM Express (NVMe) | 256 GB SSD M.2 SATA 6Gb/s |
|---|
| AUDIO & VIDEO | ASUS VivoBook S14 (S431FA) | ASUS ZenBook S UX391UA (ET087T) |
|---|
| Graphics Processor (GPU) | Intel UHD Graphics 620 | Intel UHD Graphics 620 |
|---|---|---|
| Camera | Yes - HD | Yes - HD |
| Camera Features | IR camera | - |
| Sound | Harman/kardon stereo speakers, array microphone | Harman/kardon stereo speakers, array microphone |
| Audio Features | ASUS SonicMaster | ASUS SonicMaster |
| COMMUNICATIONS | ASUS VivoBook S14 (S431FA) | ASUS ZenBook S UX391UA (ET087T) |
|---|
| Wireless | 802.11a/b/g/n/ac, Bluetooth 4.2 | 802.11a/b/g/n/ac, Bluetooth 4.2 |
|---|
| BATTERY | ASUS VivoBook S14 (S431FA) | ASUS ZenBook S UX391UA (ET087T) |
|---|
| Technology | 2-cell lithium polymer | 4-cell |
|---|---|---|
| Battery Capacity (Size) | 47 Wh | 50 Wh |
| Battery Life | - | Up to 13.5 hours |
| AC ADAPTER | ASUS VivoBook S14 (S431FA) | ASUS ZenBook S UX391UA (ET087T) |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
|---|---|---|
| Output | 45 Watt, 19 V, 2.47 A | 65 Watt, 20 V |
| INPUT | ASUS VivoBook S14 (S431FA) | ASUS ZenBook S UX391UA (ET087T) |
|---|
| Type | Keyboard, NumberPad | Keyboard, touchpad |
|---|---|---|
| Keyboard Backlight | Yes | Yes |
| CONNECTIONS & EXPANSIONS | ASUS VivoBook S14 (S431FA) | ASUS ZenBook S UX391UA (ET087T) |
|---|
| Interfaces | Headphone/microphone combo jack USB 3.1 Gen 1 USB 2.0 USB-C 3.1 Gen 2 HDMI |
Headphone/microphone combo jack USB-C 3.1 Gen 1 (Power Delivery/data/video) 2 x USB-C 3.1 Gen 2 (supports Thunderbolt 3) (Power Delivery/data/video) |
|---|---|---|
| Memory Card Reader | Yes (SD Card) | - |
| SOFTWARE | ASUS VivoBook S14 (S431FA) | ASUS ZenBook S UX391UA (ET087T) |
|---|
| Operating System (OS) | Windows 10 Home 64-bit Edition | Windows 10 Home |
|---|
| MISCELLANEOUS | ASUS VivoBook S14 (S431FA) | ASUS ZenBook S UX391UA (ET087T) |
|---|
| Included Accessories | Power adapter | USB-C power adapter |
|---|---|---|
| Security | Firmware Trusted Platform Module (TPM) Security Chip | Firmware Trusted Platform Module (TPM) Security Chip |
| Features | System password, ErgoLift | - |
| SAR Value | 0.6 W/kg (body), 0.6 W/kg (limb) | - |
| Model Number | AM016T | - |
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