Is the Core a crowning achievement, or is there a worm in it? The first company to offer a complete external GPU solution over Thunderbolt 3 (TB3), Razer's "Core" is still one of the most popular graphics docks available. It uses a TB3 interface attached to an older, more compatible TI82 controller, and so should be compatible with nearly any laptop with a TB3 port (not just Razer's). We benchmark the Core and Nvidia's latest Pascal line of GPUs with the Core and the Blade to see if the juice is worth the squeeze.
http://www.notebookcheck.net/Razer-Core-External-GPU-and-Razer-Blade-Laptop-Review.213526.0.html