Future prospects: Valve has confirmed that its Steam Machine will support AMD’s FSR 4 upscaling technology. In an interview with Digital Foundry, SteamOS developer Pierre-Loup Griffais said there is no official release schedule yet, but hinted that it could be rolled out “on the same schedule[as Windows releases].”
Screenshots posted to X by YouTuber and XR analyst Brad Lynch appear to show that Valve is already testing support for FSR 4.1 upscaling in Proton Experimental builds for SteamOS. According to a SteamDB entry dated June 22nd, AMD has added the FSR 4.1.1 INT8 DLL file to Steam, suggesting that the company is working with Valve to bring the latest upscaling technology to SteamOS devices.
– Brad Lynch (@SadlyItsBradley) June 22, 2026
Valve has since removed the manifest from the Proton Experimental depot, suggesting that the update was pushed earlier than intended. However, a Redditor who was able to download the DLL before it was removed claims that this version of FSR also works with RDNA 3.5 hardware. It added that the DLL includes a new INT8 version of FSR 4.1.1 and can be used with OptiScaler to upgrade games from FSR 3.
A screenshot shared by Redditor AthleteDependent926 appears to show FSR 4.1 running on at least three Radeon GPUs across multiple RDNA generations. The new DLL reportedly delivers smooth gameplay on the RDNA 3-based Radeon RX 7800 XT and RDNA 3.5-based Radeon 890M, but the RDNA 2-based 6900 XT still experiences the same flickering and ghosting issues seen with the old DLL.
Valve may have confirmed FSR 4 for Steam Machine, but AMD has yet to officially confirm FSR 4.1 support for Proton. However, the company released the Adrenalin 26.6.2 WHQL driver earlier today, adding support for FSR 4.1 on all RDNA 3-based GPUs, including the Radeon RX 7000 series. This move expands support for AMD’s latest upscaling technology to over 300 games.
According to AMD’s Jack Huynh, the company is also developing a “lightweight machine learning model” to implement FSR 4.1 on RDNA 3 APUs. This announcement will come as welcome news to RDNA 3 APU users who were previously unsure whether FSR 4.1 would work with integrated graphics solutions in low-cost systems.
– Jack Huynh (@jackhuynh) June 22, 2026
AMD also plans to extend FSR 4.1 support to RDNA 2 GPUs next year as it continues to optimize AI models to run on older graphics hardware without dedicated AI accelerators. There’s no exact rollout schedule yet, but RDNA 2 users are likely to appreciate AMD’s decision to bring modern upscaling techniques to hardware that is several years old.
