Their current raytracer is limited by the available compute power, so it's forced to use as few samples per pixel as possible, which results in a noisy picture.

Their current raytracer is limited by the available compute power, so it's forced to use as few samples per pixel as possible, which results in a noisy picture. However, there's a synergy between their on-chip ML cores and their raytracing engine: they use ML cores (which are typically useless in graphic workloads) to de-noise ray-traced images.