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by IMcD23 3606 days ago
An external Thunderbolt 2 GPU will only run at the equivalent of PCI x4, while Thunderbolt 3 eGPUs will do enough bandwidth to have full GPU performance. eGPU driver support was added to macOS Sierra, so hopefully the new Macbook Pros with USB-C / Thunderbolt 3 will support eGPUs nicely.