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Razer Core V2 vs Sonnet eGFX Breakaway Box 550: Comparison
What is the difference between Razer Core V2 and Sonnet eGFX Breakaway Box 550?
Host power delivery is where these two genuinely part company, Razer Core V2 100 W against Sonnet eGFX Breakaway Box 550 87 W, a 13% lead for Razer Core V2.
Which should you buy, Razer Core V2 or Sonnet eGFX Breakaway Box 550?
it is the wrong buy for buyers who want current warranty support from Razer. It is equally the pick for owners of an older Thunderbolt 3 MacBook Pro or Blade Stealth wanting a budget used eGPU box. It is not the one for anyone buying new in 2026, since it's long discontinued and Thunderbolt 3 caps bandwidth well below TB5 boxes. The Sonnet eGFX Breakaway Box 550 suits budget builds running GTX 10-series or RTX 20-series double-wide cards and buyers who find it discounted versus the newer 650, though it is not the pick for RTX 30-series or newer cards that want more PSU headroom and builds needing more than 300mm of card clearance. The same goes for Mac users wanting Sonnet's certified eGFX driver support on Thunderbolt 3. Avoid it for anyone who can spend a little more for the Breakaway Box 650's extra 100W. Our rating of the Razer Core V2 (6/10): A capable but dated TB3 box. Fine secondhand, not worth seeking out new. Our rating of the Sonnet eGFX Breakaway Box 550 (6/10): A solid early Sonnet box, but the 650 offers more headroom for little extra cost.
Razer Core V2 vs Sonnet eGFX Breakaway Box 550 price
Cost splits them too. Razer Core V2 sits at $300, Sonnet eGFX Breakaway Box 550 at $399, 33% more.
Frequently asked questions
Do the Razer Core V2 and Sonnet eGFX Breakaway Box 550 differ on psu wattage?
Yes. PSU Wattage reads 500 W on the Razer Core V2 versus 550 W on the Sonnet eGFX Breakaway Box 550.
Is the Cooling Type the same on the Razer Core V2 and Sonnet eGFX Breakaway Box 550?
It is. Both are listed at Active Fan, so it is not a reason to pick one over the other.
Specs and benchmarks
Brand
- Razer Core V2
- Razer
- Sonnet eGFX Breakaway Box 550
- Sonnet
Connection Standard
- Razer Core V2
- Thunderbolt 3
- Sonnet eGFX Breakaway Box 550
- Thunderbolt 3
Model Number
- Razer Core V2
- Core V2
- Sonnet eGFX Breakaway Box 550
- eGFX Breakaway Box 550
Extra Ports
- Razer Core V2
- 4
- Sonnet eGFX Breakaway Box 550
- None onboard beyond the GPU's own outputs
PSU Wattage
- Razer Core V2
- 500 W-9%
- Sonnet eGFX Breakaway Box 550
- 550 WBest
Host Power Delivery
- Razer Core V2
- 100 WBest
- Sonnet eGFX Breakaway Box 550
- 87 W-13%
Max GPU Length
- Razer Core V2
- 310 mmBest
- Sonnet eGFX Breakaway Box 550
- 300 mm-3%
Cooling Type
- Razer Core V2
- Active Fan
- Sonnet eGFX Breakaway Box 550
- Active Fan
GPU Compatibility
- Razer Core V2
- GTX 10-series through RTX 20-series, dual-slot cards
- Sonnet eGFX Breakaway Box 550
- GTX 10-series through RTX 20-series and equivalent AMD cards, double-wide
Price
- Razer Core V2
- Launched at $299.99 (2017)
- Sonnet eGFX Breakaway Box 550
- Launched around $399 (2017)
Which one should you pick?
Choose Razer Core V2 if you want the higher host power delivery (100 W vs 87 W) and the higher max GPU length (310 mm vs 300 mm).
Choose Sonnet eGFX Breakaway Box 550 if you want the higher PSU wattage (550 W vs 500 W).
Price comparison
| Retailer | Razer Core V2 | Sonnet eGFX Breakaway Box 550 |
|---|---|---|
| Amazon | $299.99 View on Amazon | $399.00 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 V2
6 / 10 Expert Rating
A capable but dated TB3 box.
Sonnet eGFX Breakaway Box 550
6 / 10 Expert Rating
A solid early Sonnet box, but the 650 offers more headroom for little extra cost.
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