Believe it or not you can use Thunderbolt 3 on some AMD Ryzen PCs

[Windows Central]

Best answer: Yes, but right now, there are only a couple of motherboards that support both AMD CPUs and the Thunderbolt 3 standard. These are the ASRock Phantom Gaming ITX TB3 for Ryzen and the Gigabyte Designare TRX40 for the Threadripper platform.

Full story from the WindowsCentral blog...