What some developers don’t realize is that ray tracing is a resource like water, you just spray on some giga rays for shadows, reflections, and subsurface scattering. You don’t have to render your whole scene in rays. So developers can create something for folks with 6Gigarays (NVIDIA​ Geforce 2070) in Virtual Reality and then upscale that for folks with 8Gigarays (Nvidia RTX GTX 2080) and folks with 10Gigarays (RTX GTX 2080Ti) https://medium.com/silicon-valley-global-news/real-time-ray-tracing-rtx-is-coming-to-virtual-reality-and-is-expected-to-revolutionize-the-vr-564abc09a8b3