Detailed comparison and review of ASUS VivoBook S14 (S431FA) and ASUS 14 (X409UA). With our comprehensive overview, you can simply compare dimensions, performance, storage, functions, but also other key features of both laptops and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the laptop that best fits your needs and expectations.
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 14 (X409UA) based on its technical characteristics, features, user experience, expert reviews and price level.
affordable price
compact design
adequate performance
solid build quality
decent battery life
average display quality
limited storage capacity
no backlit keyboard
mediocre graphics performance
| DESIGN AND DIMENSIONS | ASUS VivoBook S14 (S431FA) | ASUS 14 (X409UA) |
|---|
| Product Type | Notebook | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 32.33 cm x 21.37 cm x 1.8 cm | 32.5 cm x 21.6 cm x 2.29 cm |
| Weight | 1.4 kg | 1.6 kg |
| Colour | Transparent silver | Slate grey |
| DISPLAY | ASUS VivoBook S14 (S431FA) | ASUS 14 (X409UA) |
|---|
| Screen Size (Type) | 14" | 14" |
|---|---|---|
| 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 | - |
| Colour Gamut | 72% NTSC | 45% NTSC |
| Features | Anti-glare, NanoEdge display, 178° viewing angle | Anti-glare |
| PROCESSOR | ASUS VivoBook S14 (S431FA) | ASUS 14 (X409UA) |
|---|
| CPU | Intel Core i5 (8th Gen) 8265U / 1.6 GHz | Intel Core i3 (7th Gen) 7020U / 2.3 GHz |
|---|---|---|
| Max Turbo Speed | 3.9 GHz | - |
| Number of Cores | Quad-Core | Dual-Core |
| Cache | - | 3 MB |
| 64-bit Computing | Yes | Yes |
| Features | Intel Turbo Boost Technology 2.0 | - |
| MEMORY | ASUS VivoBook S14 (S431FA) | ASUS 14 (X409UA) |
|---|
| RAM | 8 GB (provided memory is soldered) | 4 GB (provided memory is soldered) |
|---|---|---|
| RAM Type | LPDDR3 SDRAM | DDR4 SDRAM |
| Speed | 2133 MHz | - |
| Form Factor | - | SO-DIMM 260-pin |
| STORAGE | ASUS VivoBook S14 (S431FA) | ASUS 14 (X409UA) |
|---|
| Main Storage Size (HDD/SSD) | 256 GB SSD M.2 PCIe 3.0 x2 - NVM Express (NVMe) | 256 GB SSD M.2 PCIe 3.0 x2 - NVM Express (NVMe) |
|---|
| AUDIO & VIDEO | ASUS VivoBook S14 (S431FA) | ASUS 14 (X409UA) |
|---|
| Graphics Processor (GPU) | Intel UHD Graphics 620 | Intel HD Graphics 620 |
|---|---|---|
| Camera | Yes - HD | Yes - VGA |
| Camera Features | IR camera | - |
| Sound | Harman/kardon stereo speakers, array microphone | Speaker, microphone |
| Audio Features | ASUS SonicMaster | - |
| COMMUNICATIONS | ASUS VivoBook S14 (S431FA) | ASUS 14 (X409UA) |
|---|
| Wireless | 802.11a/b/g/n/ac, Bluetooth 4.2 | 802.11a/b/g/n/ac, Bluetooth 4.1 |
|---|
| BATTERY | ASUS VivoBook S14 (S431FA) | ASUS 14 (X409UA) |
|---|
| Technology | 2-cell lithium polymer | 3-cell Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 47 Wh | 42 Wh |
| AC ADAPTER | ASUS VivoBook S14 (S431FA) | ASUS 14 (X409UA) |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
|---|---|---|
| Output | 45 Watt, 19 V, 2.47 A | 45 Watt, 19 V, 2.37 A |
| INPUT | ASUS VivoBook S14 (S431FA) | ASUS 14 (X409UA) |
|---|
| Type | Keyboard, NumberPad | Keyboard, touchpad |
|---|---|---|
| Keyboard Backlight | Yes | - |
| Features | - | Chiclet keyboard |
| CONNECTIONS & EXPANSIONS | ASUS VivoBook S14 (S431FA) | ASUS 14 (X409UA) |
|---|
| 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 3.1 Gen 1 2 x USB 2.0 USB-C 3.1 Gen 1 HDMI LAN |
|---|---|---|
| Memory Card Reader | Yes (SD Card) | Yes (microSD) |
| SOFTWARE | ASUS VivoBook S14 (S431FA) | ASUS 14 (X409UA) |
|---|
| Operating System (OS) | Windows 10 Home 64-bit Edition | Windows 10 Home 64-bit Edition |
|---|
| MISCELLANEOUS | ASUS VivoBook S14 (S431FA) | ASUS 14 (X409UA) |
|---|
| Included Accessories | Power adapter | Power adapter |
|---|---|---|
| Security | Firmware Trusted Platform Module (TPM) Security Chip | - |
| Features | System password, ErgoLift | - |
| SAR Value | 0.6 W/kg (body), 0.6 W/kg (limb) | 0.196 W/kg (body), 0.196 W/kg (limb) |
| Model Number | AM016T | EK035T |
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