Nvidia has a popular series of "RTX" gpus released in the last year, which are billed as having real-time ray-tracing capability of some sort. It is not exactly clear to me what the best ways of making use of this are yet; if you want to path trace a whole scene it's still absurdly expensive / low frame rate (check out Quake II RTX) but there are a small number of AAA games released in the past year which are making use of real-time raytracing in small amounts for more subtle graphical improvements.
