AMD Stays Silent on FSR 4 Support for RDNA 2 and RDNA 3 as Former Dev Drops Cryptic Hint

AMD faces questions over FSR 4 support on RDNA 2 and RDNA 3 as leaks and workarounds confirm compatibility already exists.
TweakTown

AMD's FSR 4 running on RDNA 2 and 3 GPUs shows a 23% performance improvement over native

TL;DR: AMD's FSR 4 AI upscaling offers significant performance gains and improved image quality over FSR 3.1, especially on RDNA 4 GPUs. An unofficial INT8 FSR 4 version extends compatibility to RDNA ...
TechSpot

AMD Tried to Hide This: FSR 4 Upscaling Already Works on Older Radeon GPUs

AMD is working on a version of FSR 4 for older Radeon graphics cards, and today we are testing a work-in-progress build to see how it's shaping up. Is this version as good as FSR 4 in terms of image ...