TB3だとRX580ぐらいで帯域いっぱいになってVegaにしても性能伸びづらいのかな？
ソフト次第？？

https://www.macitynet.it/wp-content/uploads/2018/12/mac-mini-vs-pro-macs-premiere-pro.png

https://www.macitynet.it/mac-mini-con-egpu-contro-mac-pro-e-imac-pro-chi-vince/