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Blackmagic Design Blackmagic eGPU vs Sonnet eGFX Breakaway Box 850 T5: Comparison
Blackmagic Design Blackmagic eGPU and Sonnet eGFX Breakaway Box 850 T5 separate most on psu wattage: Blackmagic Design Blackmagic eGPU at 580, Sonnet eGFX Breakaway Box 850 T5 at 850, 32% in favour of Sonnet eGFX Breakaway Box 850 T5. Host Power Delivery splits them by another 15%, again favouring Sonnet eGFX Breakaway Box 850 T5.
Specs
| Specification |  |  |
|---|---|---|
| Connection Standard | Thunderbolt 3 (dual ports for daisy-chaining) | Thunderbolt 5 |
| Brand | Blackmagic Design | Sonnet |
| PSU Wattage | 580-32% | 850 |
| Host Power Delivery | 85-15% | 100 |
| Model | Blackmagic eGPU | eGFX Breakaway Box 850 T5 |
Verdict
Blackmagic Design Blackmagic eGPU
6.5 / 10 Expert Rating
A clean, quiet, Mac-tailored eGPU that was easy to buy and use, but has been discontinued for years and can't be upgraded.
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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