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Razer Core X vs Sonnet eGFX Breakaway Box 850 T5: Comparison
Razer Core X and Sonnet eGFX Breakaway Box 850 T5 separate most on psu wattage: Razer Core X at 650, Sonnet eGFX Breakaway Box 850 T5 at 850, 24% in favour of Sonnet eGFX Breakaway Box 850 T5. Max GPU Length splits them by another 4%, again favouring Sonnet eGFX Breakaway Box 850 T5.
Specs
| Specification |  |  |
|---|---|---|
| Connection Standard | Thunderbolt 3 | Thunderbolt 5 |
| Brand | Razer | Sonnet |
| PSU Wattage | 650-24% | 850 |
| Host Power Delivery | 100 | 100 |
| Max GPU Length | 330-4% | 345 |
| Model | Core X | eGFX Breakaway Box 850 T5 |
| GPU Compatibility | Most desktop cards up to ~330mm length; no factory-installed GPU | NVIDIA RTX 50/40/30-series, AMD RX 9000/7000/6000-series |
Verdict
Razer Core X
7.5 / 10 Expert Rating
A no-frills, high-value Thunderbolt 3 enclosure that remains one of the best-regarded budget eGPU boxes even years after launch.
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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