Side by side comparison and review of ASUS VivoBook 15 (X540UA) and ASUS VivoBook S14 (S431FA). Compare dimensions, processors, batteries, storage capacities and other key specifications and features to simplify the choice of your perfect laptop. Our goal is to make it easier for you to decide on the laptop that will best meet your expectations by revealing the main differences between the products.
Advantages and disadvantages of ASUS VivoBook 15 (X540UA) based on its technical characteristics, features, user experience, expert reviews and price level.
affordable price
solid build quality
decent processor performance
lightweight design
good keyboard feel
average display quality
limited battery life
no backlit keyboard
basic graphics capabilities
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
| DESIGN AND DIMENSIONS | ASUS VivoBook 15 (X540UA) | ASUS VivoBook S14 (S431FA) |
|---|
| Product Type | Notebook | Notebook |
|---|---|---|
| Dimensions (WxDxH) | 38.1 cm x 25.1 cm x 2.72 cm | 32.33 cm x 21.37 cm x 1.8 cm |
| Weight | 1.9 kg | 1.4 kg |
| Colour | Chocolate black IMR with hairline (LCD cover), gold IMR with hairline (top) | Transparent silver |
| DISPLAY | ASUS VivoBook 15 (X540UA) | ASUS VivoBook S14 (S431FA) |
|---|
| Screen Size (Type) | 15.6" | 14" |
|---|---|---|
| LCD Backlight Technology | LED backlight | LED backlight |
| Screen Resolution | 1366 x 768 (HD) | 1920 x 1080 (Full HD) |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | 16:9 |
| Image Brightness | 200 cd/m² | 250 cd/m² |
| Colour Gamut | 45% NTSC | 72% NTSC |
| Features | Ultra Slim Design, ASUS Splendid Video Intelligence Technology, anti-glare, ASUS EyeCare Technology | Anti-glare, NanoEdge display, 178° viewing angle |
| PROCESSOR | ASUS VivoBook 15 (X540UA) | ASUS VivoBook S14 (S431FA) |
|---|
| CPU | Intel Core i3 (7th Gen) 7020U / 2.3 GHz | Intel Core i5 (8th Gen) 8265U / 1.6 GHz |
|---|---|---|
| Max Turbo Speed | - | 3.9 GHz |
| Number of Cores | Dual-Core | Quad-Core |
| Cache | 3 MB | - |
| 64-bit Computing | Yes | Yes |
| Features | - | Intel Turbo Boost Technology 2.0 |
| MEMORY | ASUS VivoBook 15 (X540UA) | ASUS VivoBook S14 (S431FA) |
|---|
| RAM | 4 GB (provided memory is soldered) | 8 GB (provided memory is soldered) |
|---|---|---|
| Max RAM Supported | 12 GB | - |
| RAM Type | DDR4 SDRAM | LPDDR3 SDRAM |
| Speed | - | 2133 MHz |
| Slots Qty | 1 | - |
| Empty Slots | 1 | - |
| STORAGE | ASUS VivoBook 15 (X540UA) | ASUS VivoBook S14 (S431FA) |
|---|
| Main Storage Size (HDD/SSD) | 1 TB Hybrid Drive SATA / 5400 rpm - Seagate | 256 GB SSD M.2 PCIe 3.0 x2 - NVM Express (NVMe) |
|---|
| AUDIO & VIDEO | ASUS VivoBook 15 (X540UA) | ASUS VivoBook S14 (S431FA) |
|---|
| Graphics Processor (GPU) | Intel HD Graphics 620 | Intel UHD Graphics 620 |
|---|---|---|
| Camera | Yes - VGA | Yes - HD |
| Camera Features | - | IR camera |
| Sound | Stereo speakers, microphone | Harman/kardon stereo speakers, array microphone |
| Audio Features | ASUS SonicMaster, ASUS Bang & Olufsen ICEpower | ASUS SonicMaster |
| COMMUNICATIONS | ASUS VivoBook 15 (X540UA) | ASUS VivoBook S14 (S431FA) |
|---|
| Wireless | 802.11b/g/n, Bluetooth 4.0 | 802.11a/b/g/n/ac, Bluetooth 4.2 |
|---|
| BATTERY | ASUS VivoBook 15 (X540UA) | ASUS VivoBook S14 (S431FA) |
|---|
| Technology | 3-cell Lithium Ion | 2-cell lithium polymer |
|---|---|---|
| Battery Capacity (Size) | 33 Wh | 47 Wh |
| AC ADAPTER | ASUS VivoBook 15 (X540UA) | ASUS VivoBook S14 (S431FA) |
|---|
| Input | AC 120/230 V (50/60 Hz) | AC 120/230 V (50/60 Hz) |
|---|---|---|
| Output | 45 Watt, 19 V, 2.37 A | 45 Watt, 19 V, 2.47 A |
| INPUT | ASUS VivoBook 15 (X540UA) | ASUS VivoBook S14 (S431FA) |
|---|
| Type | Keyboard, touchpad | Keyboard, NumberPad |
|---|---|---|
| Numeric Keypad | Yes | - |
| Keyboard Backlight | - | Yes |
| Features | Chiclet keyboard | - |
| CONNECTIONS & EXPANSIONS | ASUS VivoBook 15 (X540UA) | ASUS VivoBook S14 (S431FA) |
|---|
| Interfaces | Headphone/microphone combo jack USB 3.0 HDMI 2 x USB 2.0 |
Headphone/microphone combo jack USB 3.1 Gen 1 USB 2.0 USB-C 3.1 Gen 2 HDMI |
|---|---|---|
| Memory Card Reader | Yes (microSD) | Yes (SD Card) |
| SOFTWARE | ASUS VivoBook 15 (X540UA) | ASUS VivoBook S14 (S431FA) |
|---|
| Operating System (OS) | Windows 10 Home 64-bit Edition | Windows 10 Home 64-bit Edition |
|---|
| MISCELLANEOUS | ASUS VivoBook 15 (X540UA) | ASUS VivoBook S14 (S431FA) |
|---|
| Included Accessories | Power adapter | Power adapter |
|---|---|---|
| Security | Firmware Trusted Platform Module (TPM) Security Chip | Firmware Trusted Platform Module (TPM) Security Chip |
| Features | System password, ASUS IceCool design | System password, ErgoLift |
| SAR Value | - | 0.6 W/kg (body), 0.6 W/kg (limb) |
| Model Number | GQ1796T | AM016T |
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