Valve accidentally leaked FSR 4.1.1 INT8 in a recent update to Proton Experimental, as reported by a Redditor. This version of AMD's FidelityFX Super Resolution appears to work with RDNA 3.5-based integrated graphics, such as those in AMD's latest Ryzen processors.
The leak was first spotted on Reddit, where users noted that the Proton Experimental branch included code for FSR 4.1.1 INT8. This suggests that AMD is developing an INT8 variant of FSR 4.1, which could offer performance improvements on hardware that supports integer-8 operations.
RDNA 3.5 is an updated architecture used in AMD's Ryzen 8000 series APUs, featuring enhanced AI accelerators. The compatibility with FSR 4.1.1 INT8 could bring better upscaling performance to these integrated GPUs, though AMD has not officially confirmed the feature.
As of June 22, 2026, no official announcement has been made by AMD regarding FSR 4.1.1 INT8. The leak remains unverified by AMD, and users are advised to treat the information as speculative until an official release.
