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10h ago

AMD Ships FSR 4.1 for RDNA 3 GPUs as Valve Moves to Add It to SteamOS

Wider availability uses tuned INT8 machine‑learning models to raise frame rates on lower‑power and integrated AMD hardware.

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Overview

  • AMD released the Adrenalin 26.6.2 driver, which adds official FSR Upscaling 4.1 support for Radeon RX 7000‑series (RDNA 3) desktop GPUs.
  • The RDNA 3 build uses an INT8 version of the FSR 4.1 model that AMD says has been tuned to deliver results comparable to the RDNA 4 FP8 model.
  • AMD says it is developing lightweight machine‑learning models to bring FSR 4.1 to RDNA 3 and RDNA 3.5 integrated GPUs, which would extend the feature to laptops, handhelds and mini‑PCs.
  • Valve briefly published amdxcffx64.dll in Proton Experimental before removing the manifest, and a user who downloaded the file reported the leaked INT8 DLL running on RDNA 3 and reportedly RDNA 3.5 hardware; Valve says it is working with AMD to enable FSR 4 support for Steam Machine and SteamOS devices.
  • For players this could mean higher frame rates on modest hardware, though visual quality and performance will vary by GPU generation and official rollouts for RDNA 3.5 iGPUs and RDNA 2 cards remain pending.