Thunderbolt falls short at 4k resolutions. It is OK for 4k24 through 4k30, but for 4k60 or higher (HDR, high frame rates and not to mention 8k) you would probab

Thunderbolt falls short at 4k resolutions. It is OK for 4k24 through 4k30, but for 4k60 or higher (HDR, high frame rates and not to mention 8k) you would probably want an internal PCIe card. 40gbit thunderbolt sounds like it should be fast enough, but it turns out that for PCIe traffic it tops out at 32gbit, which just isn't quite enough.