| Attribute |
ASUS X509FJ-EJ121T (90NB0MY1-M02100) × | 
ASUS VivoBook S510UF-BR365T (90NB0IK1-M05320) × |
| General | | |
| Model | ASUS X509FJ-EJ121T | ASUS VivoBook S510UF-BR365T |
| Product code | 90NB0MY1-M02100 | 90NB0IK1-M05320 |
| Design | | |
| Product colour | Silver | Gold |
| Form factor | Clamshell | Clamshell |
| Brand | ASUS | ASUS |
| Family | - | VivoBook |
| Series | - | S15 |
| Model name | X509FJ-EJ121T | S510UF-BR365T |
| Part number | 90NB0MY1-M02100 | 90NB0IK1-M05320 |
| Release year (year) | 2020 | 2018 |
| Processor | | |
| Processor manufacturer | Intel | - |
| Processor family | 8th gen Intel Core i5 | 8th gen Intel Core i5 |
| Processor frequency (GHz) | 1.6 | 1.6 |
| Processor boost frequency (GHz) | 3.9 | 3.4 |
| Processor model | i5-8265U | i5-8250U |
| Processor cores | 4 | 4 |
| Processor threads | 8 | 8 |
| Processor lithography (Nm) | 14 | 14 |
| Processor socket | BGA 1528 | BGA 1356 |
| Processor cache (MB) | 6 | 6 |
| Memory | | |
| Maximum internal memory (GB) | 16 | 16 |
| Internal memory (GB) | 8 | 16 |
| Display | | |
| Display diagonal (inch) | 15.6 | 15.6 |
| HD type | Full HD | - |
| LED backlight | + | + |
| Touchscreen | - | - |
| Display resolution | 1920 x 1080 pixels | - |
| Graphics | | |
| On-board graphics adapter | + | + |
| Discrete graphics adapter model | NVIDIA GeForce MX230 | NVIDIA GeForce MX130 |
| Discrete graphics memory type | GDDR5 | GDDR5 |
| Discrete graphics adapter | + | + |
| Discrete graphics adapter memory (GB) | 2 | 2 |
| On-board graphics adapter base frequency (MHz) | 300 | 300 |
| Maximum on-board graphics adapter memory (GB) | 32 | 32 |
| On-board graphics adapter model | Intel UHD Graphics | Intel UHD Graphics 620 |
| Storage | | |
| Total storage capacity (GB) | 256 | 256 |
| Number of SSDs installed | 1 | 1 |
| SSD capacity (GB) | 256 | 256 |
| Card reader integrated | + | + |
| Storage media | SSD | SSD |
| Optical drive | - | - |
| Networking | | |
| Wi-Fi standards | | |
| Bluetooth | + | + |
| Ethernet LAN | - | - |
| Wi-Fi | - | + |
| 4g | - | - |
| 3g | - | - |
| Bluetooth version | 4.2 | 4.1 |
| Ports and interfaces | | |
| USB 3.x Type-A ports | 1 | 1 |
| USB 3.x Type-C ports | 1 | 1 |
| Combo headphone/mic port | + | + |
| USB 2.0 ports | 2 | 2 |
| HDMI ports quantity | 1 | 1 |
| Audio | | |
| Built-in microphone | + | + |
| Camera | | |
| Front camera | + | + |
| Keyboard | | |
| Numeric keypad | + | - |
| Pointing device | Touchpad | Touchpad |
| Software | | |
| Operating system installed | Windows 10 Home | Windows 10 Home |
| Battery | | |
| Battery capacity (watt-hours) (Wh) | 32 | 42 |
| Weight and dimensions | | |
| Weight (kg) | 1.8 | - |
| Height (mm) | 22.9 | 17.9 |
| Depth (mm) | 234.9 | 243.5 |
| Width (mm) | 360.2 | 361.4 |
| Power | | |
| AC adapter power (W) | 65 | 65 |