Overview
- AMD released FSR 4.1 support for Radeon RX 7000 (RDNA 3) GPUs in its Adrenalin 26.6.2 driver, offering up to roughly a 49% frame-rate uplift in AMD’s own RX 7900 XTX example versus native 4K.
- Valve’s Proton Experimental briefly included an amdxcffx64.dll that enabled an unofficial FSR4 path through VKD3D-Proton before the file was removed, and a user downloaded the DLL for community testing.
- Community testers using the leaked DLL and tools like OptiScaler reported FSR 4.1.1 INT8 running on RDNA 3, RDNA 3.5 iGPUs, and even some RDNA 2 cards, though some setups showed visual artifacts and varying quality.
- AMD confirmed it will build a lightweight machine‑learning model to bring FSR 4.1 to RDNA 3 and RDNA 3.5 integrated GPUs but has not given firm release dates for those iGPU updates.
- If official iGPU support and Proton integration follow through, the change could boost performance on laptops, mini‑PCs and handhelds such as Steam Deck successors and shift the balance in upscaling competition with NVIDIA and Intel.