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OWC Mercury Helios 3 vs Razer Core V2: Comparison
OWC Mercury Helios 3 and Razer Core V2 separate most on psu wattage: OWC Mercury Helios 3 at 400, Razer Core V2 at 500, 20% in favour of Razer Core V2. Host Power Delivery splits them by another 15%, again favouring Razer Core V2. They match on connection standard, cooling type and gpu compatibility.
Specs
| Specification | ![]() | ![]() |
|---|---|---|
| Connection Standard | Thunderbolt 3 | Thunderbolt 3 |
| Brand | OWC | Razer |
| Extra Ports | None onboard beyond the GPU's own outputs | 4x USB 3.0 Type-A, 1x Gigabit Ethernet |
| PSU Wattage | 400-20% | 500 |
| Host Power Delivery | 85-15% | 100 |
| Max GPU Length | 290-6% | 310 |
| Cooling Type | Active Fan | Active Fan |
| Model | Mercury Helios 3 | Core V2 |
| GPU Compatibility | GTX 10-series through RTX 20-series, dual-slot cards | GTX 10-series through RTX 20-series, dual-slot cards |
| Price | Launched around $299 (2018) | Launched at $299.99 (2017) |
Price comparison
| Retailer | OWC Mercury Helios 3 | Razer Core V2 |
|---|---|---|
| Amazon | View on 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
OWC Mercury Helios 3
6 / 10 Expert Rating
Solid basic Mac eGPU box, superseded by the Helios FX which OWC still actively sells.
Razer Core V2
6 / 10 Expert Rating
A capable but dated TB3 box.




