Just watched this and all done on the UE4 and I was blown away. Games are getting closer to movies/real life and I like it.
No idea what power is needed but man, I would buy it
That Rebirth ray tracing demo was rendered in real time with a single RTX 2080 Ti.
Rebirth is absolutely very stunning demo I was blew away too.
There also another Unreal Engine ray tracing demo called Troll was rendered in real time with a single RTX 2080 Ti.
Not Unreal Engine but Unity had 2 ray tracing demos
called Reality vs illusion and The Heretic rendered in real time with a single RTX 2080 Ti.
Unreal and Unity developers said it really very incredible that a year ago these ray tracing demos would done rendered offline with a farm of GPUs. Now in 2019 they are very excited to see it rendered in real time with just a single RTX 2080 Ti card.
Troll ray tracing demo was really incredible, I really hope to see a sequel of Hellblade: Senua's Sacrifice to have ray tracing like Troll.
I think it will be 1 or 2 years or to see amazing ray tracing graphics like Troll, Rebirth, Reality vs illusion and The Heretic in games, Hellblade: Senua's Sacrifice took 3 years in development. AI and ML will sure help games developers to accelerate GPU rendering and reduce development time.