In depth comparison and review of ASUS ZenBook S UX391UA (ET087T) and ASUS ZenBook 14X OLED (UX3404VA). 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 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
Advantages and disadvantages of ASUS ZenBook 14X OLED (UX3404VA) based on its technical characteristics, features, user experience, expert reviews and price level.
vibrant oled display
lightweight and portable
powerful intel processor
fast ssd storage
high-quality build
average battery life
limited port selection
no dedicated gpu
higher price point
| DESIGN AND DIMENSIONS | ASUS ZenBook S UX391UA (ET087T) | ASUS ZenBook 14X OLED (UX3404VA) |
|---|
| Product Type | Notebook | Notebook - 180-degree hinge design |
|---|---|---|
| Dimensions (WxDxH) | 31.1 cm x 21.3 cm x 1.29 cm | 32.18 cm x 22.56 cm x 1.69 cm |
| Weight | 1 kg | 1.56 kg |
| Case Material | - | Aluminum |
| Colour | Deep dive blue | Inkwell grey |
| DISPLAY | ASUS ZenBook S UX391UA (ET087T) | ASUS ZenBook 14X OLED (UX3404VA) |
|---|
| Screen Size (Type) | 13.3" | 14.5" OLED |
|---|---|---|
| Touchscreen | - | Yes |
| LCD Backlight Technology | LED backlight | - |
| Screen Resolution | 1920 x 1080 (Full HD) | 2880 x 1800 (2.8K) |
| V-Sync Rate at Max Res. | - | 120 Hz |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | 16:10 |
| Image Brightness | 300 cd/m² | 550 cd/m² |
| Colour Gamut | 72% NTSC | 100% DCI-P3 |
| Colour Support | - | 1.07 billion colours |
| Features | Ultra Slim Design, anti-glare, WideView, 178° horizontal and vertical viewing angle | Glossy, Corning Gorilla glass, HDR (high dynamic range), Pantone Validated, VESA DisplayHDR 500, 89% screen-to-body ratio, 0.2 ms response rate, True Black |
| PROCESSOR | ASUS ZenBook S UX391UA (ET087T) | ASUS ZenBook 14X OLED (UX3404VA) |
|---|
| CPU | Intel Core i7 (8th Gen) 8550U / 1.8 GHz | Intel Core i9 (13th Gen) 13900H / 2.6 GHz |
|---|---|---|
| Max Turbo Speed | 4 GHz | 5.4 GHz |
| Number of Cores | Quad-Core | 14-core |
| Cache | 8 MB | L3 - 24 MB |
| 64-bit Computing | Yes | - |
| Platform Technology | - | Intel Evo |
| Features | Intel Turbo Boost Technology 2.0 | Intel Smart Cache |
| MEMORY | ASUS ZenBook S UX391UA (ET087T) | ASUS ZenBook 14X OLED (UX3404VA) |
|---|
| RAM | 8 GB (provided memory is soldered) | 16 GB (provided memory is soldered) |
|---|---|---|
| Max RAM Supported | - | 32 GB |
| RAM Type | LPDDR3 SDRAM | DDR5 SDRAM |
| Speed | 2133 MHz | 4800 MHz |
| Rated Speed | 2133 MHz | 4800 MHz |
| Form Factor | - | SO-DIMM 262-pin |
| Slots Qty | - | 1 |
| Empty Slots | - | 1 |
| STORAGE | ASUS ZenBook S UX391UA (ET087T) | ASUS ZenBook 14X OLED (UX3404VA) |
|---|
| Main Storage Size (HDD/SSD) | 256 GB SSD M.2 SATA 6Gb/s | 1 TB SSD M.2 PCIe 4.0 - NVM Express (NVMe) |
|---|
| AUDIO & VIDEO | ASUS ZenBook S UX391UA (ET087T) | ASUS ZenBook 14X OLED (UX3404VA) |
|---|
| Graphics Processor (GPU) | Intel UHD Graphics 620 | Intel Iris Xe Graphics |
|---|---|---|
| Video System Features | - | Functions as Intel UHD graphics (for single-channel memory) |
| Camera | Yes - HD | Yes - 1080p |
| Camera Features | - | IR camera, Windows Hello |
| Sound | Harman/kardon stereo speakers, array microphone | Harman/kardon stereo speakers, array microphone |
| Compliant Standards | - | Dolby Atmos |
| Audio Features | ASUS SonicMaster | Output: Smart Amplification technology, Asus Audio Booster; Input: AI noise cancelling |
| COMMUNICATIONS | ASUS ZenBook S UX391UA (ET087T) | ASUS ZenBook 14X OLED (UX3404VA) |
|---|
| Wireless | 802.11a/b/g/n/ac, Bluetooth 4.2 | 802.11a/b/g/n/ac/ax (Wi-Fi 6E), Bluetooth 5.3 |
|---|---|---|
| Features | - | Dual stream (2x2) |
| BATTERY | ASUS ZenBook S UX391UA (ET087T) | ASUS ZenBook 14X OLED (UX3404VA) |
|---|
| Technology | 4-cell | 3-cell Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 50 Wh | 70 Wh |
| Battery Life | Up to 13.5 hours | - |
| AC ADAPTER | ASUS ZenBook S UX391UA (ET087T) | ASUS ZenBook 14X OLED (UX3404VA) |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 65 Watt, 20 V | 90 Watt, 20 V, 4.5 A |
| INPUT | ASUS ZenBook S UX391UA (ET087T) | ASUS ZenBook 14X OLED (UX3404VA) |
|---|
| Type | Keyboard, touchpad | Keyboard, NumberPad |
|---|---|---|
| Numeric Keypad | - | Yes |
| Keyboard Backlight | Yes | Yes |
| Features | - | 1.4mm travel distance, ASUS ErgoSense |
| CONNECTIONS & EXPANSIONS | ASUS ZenBook S UX391UA (ET087T) | ASUS ZenBook 14X OLED (UX3404VA) |
|---|
| Interfaces | 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) |
Headphone/microphone combo jack HDMI 2.1 USB 3.2 Gen 2 Thunderbolt 4 (supports DisplayPort) (Power Delivery) |
|---|
| SOFTWARE | ASUS ZenBook S UX391UA (ET087T) | ASUS ZenBook 14X OLED (UX3404VA) |
|---|
| Operating System (OS) | Windows 10 Home | Windows 11 Home |
|---|---|---|
| Software Included | - | McAfee LiveSafe, MyASUS, ScreenXpert, ProArt Creator Hub, Microsoft 365 (1 month trial), GlideX |
| MISCELLANEOUS | ASUS ZenBook S UX391UA (ET087T) | ASUS ZenBook 14X OLED (UX3404VA) |
|---|
| Included Accessories | USB-C power adapter | Power adapter |
|---|---|---|
| Security | Firmware Trusted Platform Module (TPM) Security Chip | Trusted Platform Module (TPM 2.0) Security Chip |
| Features | - | ASUS IceCool design, MIL-STD-810H tested, compatible with stylus, Cortana support |
| Compliant Standards | - | RoHS, REACH, TUV Rheinland Low Blue Light Certification, SGS Eye Care Display Certification |
| Max Operating Temperature | - | 49 °C |
| Min Operating Temperature | - | -37 °C |
| Humidity Range Operating | - | 95% RH |
| Model Number | - | M3099W |
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