https://www.live-feeds.com/feed/valve-leaks-fsr-4-1-for-rdna-3-and-rdna-3-5-gpus-through-proton-experimentalContinuously updated, source-cited coverage. https://www.live-feeds.com/feed/valve-leaks-fsr-4-1-for-rdna-3-and-rdna-3-5-gpus-through-proton-experimentalhttps://www.live-feeds.com/feed/valve-leaks-fsr-4-1-for-rdna-3-and-rdna-3-5-gpus-through-proton-experimental#u12462Thu, 25 Jun 2026 06:56:49 +0000Valve has integrated AMD FSR 4.1 into Proton Experimental, enabling the upscaler for RDNA 3 and RDNA 3.5 GPUs. This deployment occurred ahead of the Steam Machine launch. The leak includes an INT8 model designed to bring FSR 4.1 to older Radeon hardware.What's confirmed:Valve integrated AMD FSR 4.1 into Proton Experimental for RDNA 3 and RDNA 3.5 GPUs.The FSR 4.1 leak involves an INT8 model.FSR 4.1 support for RDNA 3 GPUs arrived via Valve one day before AMD's official release.AMD promises quality parity between FSR 4.1 on RDNA 3 and RDNA 4.Still unconfirmed:The Xbox Series X will receive