Side by side comparison and review of ASUS R521JA (EJ974T) and ASUS Vivobook S 14 OLED (K3402ZA). 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 R521JA (EJ974T) based on its technical characteristics, features, user experience, expert reviews and price level.
affordable price
solid build quality
lightweight design
decent battery life
adequate performance
average display quality
limited storage capacity
no backlit keyboard
basic graphics card
Advantages and disadvantages of ASUS Vivobook S 14 OLED (K3402ZA) based on its technical characteristics, features, user experience, expert reviews and price level.
vivid oled display
lightweight design
fast ssd storage
good processor performance
competitive price
average battery life
no dedicated gpu
limited port selection
basic audio quality
| DESIGN AND DIMENSIONS | ASUS R521JA (EJ974T) | ASUS Vivobook S 14 OLED (K3402ZA) |
|---|
| Product Type | Notebook | Notebook - 180-degree hinge design |
|---|---|---|
| Dimensions (WxDxH) | 36 cm x 23.5 cm x 2.29 cm | 31.64 cm x 22.45 cm x 1.89 cm |
| Weight | 1.9 kg | 1.4 kg |
| Colour | Transparent silver | Neutral grey |
| DISPLAY | ASUS R521JA (EJ974T) | ASUS Vivobook S 14 OLED (K3402ZA) |
|---|
| Screen Size (Type) | 15.6" | 14" OLED |
|---|---|---|
| Screen Resolution | 1920 x 1080 (Full HD) | 2880 x 1800 (WQXGA+) |
| V-Sync Rate at Max Res. | 60 Hz | 90 Hz |
| Widescreen | Yes | Yes |
| Image Aspect Ratio | 16:9 | 16:10 |
| Image Brightness | 200 cd/m² | 400 cd/m² |
| Colour Gamut | 45% NTSC | 100% DCI-P3 |
| Colour Support | - | 1.07 billion colours |
| Features | Anti-glare, 83% screen-to-body ratio | Glossy, NanoEdge display, Pantone Validated, 84% screen-to-body ratio, 0.2 ms response rate, HDR 600 True Black |
| PROCESSOR | ASUS R521JA (EJ974T) | ASUS Vivobook S 14 OLED (K3402ZA) |
|---|
| CPU | Intel Core i5 (10th Gen) 1035G1 / 1 GHz | Intel Core i5 (12th Gen) 12500H / 2.5 GHz |
|---|---|---|
| Max Turbo Speed | 3.6 GHz | 4.5 GHz |
| Number of Cores | Quad-Core | 12-core |
| Cache | 6 MB | 18 MB |
| Platform Technology | - | Intel Evo |
| MEMORY | ASUS R521JA (EJ974T) | ASUS Vivobook S 14 OLED (K3402ZA) |
|---|
| RAM | 4 GB (provided memory is soldered) | 16 GB (1 x 8 GB + 8 GB (soldered)) |
|---|---|---|
| RAM Type | DDR4 SDRAM | DDR4 SDRAM |
| Form Factor | - | SO-DIMM 260-pin |
| Slots Qty | - | 1 |
| Empty Slots | - | 0 |
| STORAGE | ASUS R521JA (EJ974T) | ASUS Vivobook S 14 OLED (K3402ZA) |
|---|
| Main Storage Size (HDD/SSD) | 512 GB SSD M.2 PCIe 3.0 - NVM Express (NVMe) | 512 GB SSD M.2 PCIe 4.0 - NVM Express (NVMe) |
|---|
| AUDIO & VIDEO | ASUS R521JA (EJ974T) | ASUS Vivobook S 14 OLED (K3402ZA) |
|---|
| Graphics Processor (GPU) | Intel UHD Graphics | Intel Iris Xe Graphics |
|---|---|---|
| Video System Features | - | Functions as Intel UHD graphics (for single-channel memory) |
| Camera | Yes - VGA | Yes - 720p |
| Camera Features | - | Privacy shutter |
| Sound | Speaker, microphone | Harman/kardon stereo speakers, array microphone |
| Audio Features | Output: ASUS SonicMaster | Output: Smart Amp; Input: noise-cancellation technology |
| COMMUNICATIONS | ASUS R521JA (EJ974T) | ASUS Vivobook S 14 OLED (K3402ZA) |
|---|
| Wireless | 802.11a/b/g/n/ac, Bluetooth 4.1 | Bluetooth 5.0, 802.11a/b/g/n/ac/ax (Wi-Fi 6E) |
|---|---|---|
| Features | Single stream (1x1) | Dual stream (2x2) |
| BATTERY | ASUS R521JA (EJ974T) | ASUS Vivobook S 14 OLED (K3402ZA) |
|---|
| Technology | 2-cell Lithium Ion | 3-cell Lithium Ion |
|---|---|---|
| Battery Capacity (Size) | 32 Wh | 70 Wh |
| AC ADAPTER | ASUS R521JA (EJ974T) | ASUS Vivobook S 14 OLED (K3402ZA) |
|---|
| Input | AC 100-240 V (50/60 Hz) | AC 100-240 V (50/60 Hz) |
|---|---|---|
| Output | 45 Watt, 19 V, 2.37 A | 90 Watt, 20 V, 4.5 A |
| INPUT | ASUS R521JA (EJ974T) | ASUS Vivobook S 14 OLED (K3402ZA) |
|---|
| Type | Keyboard, touchpad | Keyboard, touchpad, NumberPad 2.0 |
|---|---|---|
| Numeric Keypad | Yes | - |
| Keyboard Backlight | - | Yes |
| Features | Chiclet keyboard | Chiclet keyboard, 1.4mm travel distance, ASUS ErgoSense |
| CONNECTIONS & EXPANSIONS | ASUS R521JA (EJ974T) | ASUS Vivobook S 14 OLED (K3402ZA) |
|---|
| Interfaces | USB 3.2 Gen 1 USB-C 3.2 Gen 1 2 x USB 2.0 HDMI Headphone/microphone combo jack |
Headphone/microphone combo jack USB 2.0 2 x USB-C (supports Thunderbolt 4, DisplayPort Alt Mode) (Power Delivery) USB 3.2 Gen 1 HDMI |
|---|---|---|
| Memory Card Reader | Yes (microSD) | - |
| SOFTWARE | ASUS R521JA (EJ974T) | ASUS Vivobook S 14 OLED (K3402ZA) |
|---|
| Operating System (OS) | Windows 10 Home | Windows 11 Home |
|---|
| MISCELLANEOUS | ASUS R521JA (EJ974T) | ASUS Vivobook S 14 OLED (K3402ZA) |
|---|
| Included Accessories | Power adapter | Power adapter |
|---|---|---|
| Security | Firmware Trusted Platform Module (TPM) Security Chip | Firmware Trusted Platform Module (TPM) Security Chip, fingerprint reader |
| Features | - | System password, ASUS IceCool design, ASUS Antibacterial Guard |
| Compliant Standards | - | RoHS, REACH, TUV Rheinland Flicker Free Certification, SGS Eye Care Display Certification, TUV Rheinland Low Blue Light (Hardware Solution) |
| Model Number | - | KM044W |
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