If you’re a frequent gamer, by now you’ll have heard of ray tracing and NVIDIA’s DLSS (Deep Learning Super Sampling), two powerful tools that combine to boost performance in games and provide stunning visual fidelity by replicating realistic lighting and reflections. NVIDIA pioneered these technologies in gaming with the introduction of its RTX 20-Series graphics cards, and in the two hardware generations since then, the techniques and AI hardware behind them have improved considerably. With DLSS 3.5 and a new Ray Reconstruction system working hand-in-hand, ray-traced games can look all the more lifelike and run significantly smoother at the same time. So how do these technologies work?