A video from 2002 recently surfaced, showing the 19-year-old Playstation 2 apparently running a ray-tracing tech demo in real-time. With the ninth-gen consoles touting ray-tracing as a premium feature, it's interesting to look at an almost-forgotten implementation of the technology from two decades ago.
https://www.notebookcheck.net/The-Playstation-2-could-apparently-handle-real-time-ray-tracing.448781.0.html