ASUS VivoBook S 15 (S5507, Snapdragon X Elite) vs Dell XPS 14 (9440)
ASUS VivoBook S 15 delivers exceptional value with its Snapdragon X Elite processor, stunning 2880x1620 OLED display at 120Hz, and industry-leading 18-hour battery life—all at $400 less than the Dell. Its 1.42kg chassis makes it genuinely portable for a 15.6-inch machine. However, Dell XPS 14 offers proven Intel performance, superior build quality with carbon fiber elements, Thunderbolt 3 connectivity, expandable storage, and SD card support for creative professionals. The XPS lacks the ASUS's display vibrancy and battery endurance but provides more traditional laptop versatility. For content creators prioritizing ports and upgradability, XPS wins; for travelers and everyday users seeking better value, battery life, and visual fidelity, the VivoBook S 15 is the smarter choice.
Full Specifications
| Spec | ASUS VivoBook S 15 (S5507, Snapdragon X Elite) | Dell XPS 14 (9440) |
|---|---|---|
| Software | Windows 11 Home (ARM) | Windows 11 Home |
| Body | ||
| Weight | 1.42 kg | 1.74 kg |
| Material | Aluminum | CNC aluminum and carbon fiber |
| Dimensions | 352.6 x 225.9 x 14.7 mm | 320.0 x 215.5 x 18.0 mm |
| Ports | ||
| HDMI | 1 | — |
| USB-A ports | 2 | — |
| USB-C ports | 2 | — |
| SD card | ||
| Thunderbolt ports | 0 | 3 |
| Battery | ||
| Battery life | Up to 18 hours | Up to 12 hours mixed use |
| Capacity | 70 Wh | 69.5 Wh |
| Display | ||
| Size | 15.6 inches | 14.5 inches |
| Type | OLED, 16:9 | InfinityEdge IPS non-touch |
| Resolution | 2880 x 1620 | 1920 x 1200 |
| Refresh rate | 120Hz | 60Hz |
| Brightness (nits) | 600 | 500 |
| Storage | ||
| SSD | 1 TB PCIe 4.0 NVMe | 512 GB NVMe |
| Expandable storage | ||
| Keyboard | ||
| Backlit | ||
| Processor | ||
| RAM | 16 GB LPDDR5X | 16 GB LPDDR5x |
| Cores | 12 cores | 16-core (6P+8E+2LPE) |
| Chipset | Qualcomm Snapdragon X Elite X1E-78-100 | Intel Core Ultra 7 155H |
Category Scores
Pros & Cons
ASUS VivoBook S 15 (S5507, Snapdragon X Elite)
Pros
- Excellent 3K 120Hz OLED display
- All-day battery life thanks to ARM efficiency
- Powerful 45 TOPS NPU for Copilot+ AI features
- Lightweight for a 15.6-inch laptop
- Fanless-quiet operation under typical loads
Cons
- ARM compatibility issues with some x86 apps
- No Thunderbolt support
- Soldered RAM not upgradeable
- No SD card reader
Dell XPS 14 (9440)
Pros
- Striking minimalist CNC aluminum design
- Optional 3.2K OLED touch display
- Optional discrete RTX 4050 GPU
- Three Thunderbolt 4 ports plus microSD
- Excellent quad speaker setup
Cons
- No USB-A or HDMI ports
- Capacitive function row lacks tactile feedback
- Seamless haptic touchpad has no visible borders
- Battery life below class-leading ultrabooks
- Premium price for the base configuration
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Explore more in laptops, see all ASUS products or all Dell products. View full details for the ASUS VivoBook S 15 (S5507, Snapdragon X Elite) or the Dell XPS 14 (9440).

