FSR 4 modded to run on RDNA 2 GPUs improves image quality by "leaps and bounds," but carries 10-20% worse performance —AMD's leaked source code turns into modding frenzy

Tom's Hardware
Sep 22, 2025, 12:24 pm306 ptsTop
FSR 4 is supposed to only work on RX 9000 series GPUs, but modders were quick to figure out how to run it on older RDNA graphics cards when AMD accidentally published the entire source code on GitHub. Several users have since tested their GPUs with tweaked DLLs, with all results pointing toward improved visuals…

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