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ASUS ROG XG Mobile vs Sonnet eGFX Breakaway Box 850 T5: Comparison
ASUS ROG XG Mobile and Sonnet eGFX Breakaway Box 850 T5 separate most on psu wattage: ASUS ROG XG Mobile at 330, Sonnet eGFX Breakaway Box 850 T5 at 850, 61% in favour of Sonnet eGFX Breakaway Box 850 T5.
Specs
| Specification |  |  |
|---|---|---|
| Connection Standard | Proprietary ROG XG Mobile interface (PCIe-based) | Thunderbolt 5 |
| Brand | ASUS | Sonnet |
| PSU Wattage | 330-61% | 850 |
| Host Power Delivery | 100 | 100 |
| Model | ROG XG Mobile (2023) | eGFX Breakaway Box 850 T5 |
| GPU Compatibility | Fixed: pre-installed GeForce RTX 4090 Laptop GPU, 16GB GDDR6 (not swappable) | NVIDIA RTX 50/40/30-series, AMD RX 9000/7000/6000-series |
Verdict
ASUS ROG XG Mobile
8.5 / 10 Expert Rating
Exceptional performance and portability for its narrow compatibility list, but the closed ecosystem and steep price limit it to committed ROG Flow owners.
Sonnet eGFX Breakaway Box 850 T5
9 / 10 Expert Rating
The Thunderbolt 5 performance leader — 92% of desktop GPU performance, triple-wide support up to 345mm, and single-cable 100W charging.
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