I had the original Razer core right when it launched. Razer did an excellent job with their eGPU TB3 enclosures. In my case, a firmware update made the USB port

I had the original Razer core right when it launched. Razer did an excellent job with their eGPU TB3 enclosures. In my case, a firmware update made the USB ports practically unusable, and I eventually got Razer to accept it as a return, but I'm eventually going to go with them and their future iterations of the Core once I get a laptop that supports TB3/4.