It's about drivers, not about graphic card model. Please update drivers, restart computer and try again.
I only mentioned he check the model because I was under the impression that the new NVIDIA denoiser only works with NVIDIA video cards (and not AMD cards, for instance) and also that they had to be the most recent versions.
RTX 2070 as he mentions it, should be up to scratch, which means its probably a driver issue.
You'd be surprised to find out how many people out there don't even know what model or make the graphics card they have in their machine actually is.
Especially if its people who didn't build or spec their rigs themselves.