The Verge which is mentioned in the TechSpot article above says a single video card was used to show the demo, the Titan V. Not saying one card was used to create the demo city, just to "power the demo" quoted from their article below.
https://www.theverge.com/2018/12/3/1...g-demo-neurips
Last edited by PharmingInStyle; 12-11-2018 at 12:10 PM.