Indeed. We tried the same build of the engine with a Titan XP and a RTX6000. No other changes other than the card itself and the drivers (due to it being a Quadro). It went from no raytracing to being able to raytrace. 
Btw there’s also a denoiser available but just for reflections. the flag is r.reflection.denoiser
Also, be aware that raytraced AO is being drawn on top of everything, including emissive materials. If you run into emissive materials that look black, but you can see them in the reflections, try turning raytraced AO off.