From Twitter of one of the demo creators:

"I was using GTX 980, which runs it at 1440 in the editor with perf to spare"

https://twitter.com/robertcupisz/status/709789738316726272

Except that was in reference to the demo they gave at GDC while using the editor. Not necessarily the card used to render the demo, someone should ask.

From the YouTube comments:

Processor: Octacore Intel Core i7 6th Generation GPU: Nvidia GeForce Titan X (3x SLI)

Update from one of the demo authors:

"The Adam demo runs in 1440p at 30fps on a GTX 980, by the way :) See it running real-time at the Unity booth at GDC!"

https://twitter.com/robertcupisz/status/710160351568986112

So it's very likely that the YouTube video was rendered with far better hardware.

And one Titan X gives 6.6 TFLOPS, single precision (peak)

From the youtube comments that was also buddy pulling a guess out of his butt.

Was the commenter making it up.

Sure, but same info here: http://thenextweb.com/gadgets/2016/03/16/check-amazing-short...

Someone should ask though given another poster's comment below about the GDC demo of the editor where they were using a GTX 980.

on your hardware!

Nope, that's exactly what it led me to believe, but it is definitely not that.

Oops. Looks like I was wrong... This is a youtube video of a pre-baked "realtime" render.

Still impressive though...