This made me laugh so much!
You don't need a system of that calibre for either Xb1X performance and fidelity - or even double that!
This is demonstrated in the video, where their overkill test rig well surpasses double performance with greater than Xb1X fidelity.
DF have a separate video showcasing what other systems can achieve at 60fps
https://www.youtube.com/watch?v=RUrbciPfX6k
(though there are many more possibilities worth testing for whatever performance level)
And most importantly of all - no one has to be restricted to XB1X fidelity, that's the whole fun of the PC version.
Do what makes sense for your cost / hardware, and the game is capable of scaling.