The way Intel's presentation describes XeSS makes it sound much more similar to Nvidia's Deep Learning Super Sampling (DLSS) than AMD's recently unveiled FidelityFx Super Resolution (FSR). Like DLSS, XeSS is a temporal solution that will use information from previous frames in order to upscale a game to higher resolutions...
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https://www.techspot.com/news/90865-intel-dlss-competitor-works-nvidia-amd-gpus-open.html?utm_source=dlvr.it&utm_medium=blogger