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Razer Core X vs Sonnet eGFX Breakaway Box 650: Comparison
Razer Core X and Sonnet eGFX Breakaway Box 650 separate most on host power delivery: Razer Core X at 100, Sonnet eGFX Breakaway Box 650 at 87, 13% in favour of Razer Core X. Max GPU Length splits them by another 6%, again favouring Razer Core X. They match on connection standard and psu wattage.
Specs
| Specification |  |  |
|---|---|---|
| Connection Standard | Thunderbolt 3 | Thunderbolt 3 |
| Brand | Razer | Sonnet |
| Extra Ports | 4x USB 3.0 Type-A, 1x Gigabit Ethernet | None onboard beyond the GPU's own outputs |
| PSU Wattage | 650 | 650 |
| Host Power Delivery | 100 | 87-13% |
| Max GPU Length | 330 | 310-6% |
| Cooling Type | Active Fan (rear exhaust) | Active Fan |
| Model | Core X | eGFX Breakaway Box 650 |
| GPU Compatibility | Most desktop cards up to ~330mm length; no factory-installed GPU | GTX 10-series through RTX 30-series and equivalent AMD cards, double-wide |
| Price | Launched at $299.99 (2019) | Launched around $449 (2018) |
Price comparison
| Retailer | Razer Core X | Sonnet eGFX Breakaway Box 650 |
|---|---|---|
| Amazon | View on Amazon |
Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.
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 650
7 / 10 Expert Rating
The right-sized Sonnet box for mid-range Thunderbolt 3 cards, officially Mac-certified.