AMD has officially confirmed that FSR 4.1 upscaling technology will be coming to older GPU architectures, specifically RDNA 3 and RDNA 2, addressing a major concern among Radeon users about the lack of backward compatibility. RDNA 3 support, including Radeon 7000 series GPUs, is expected to roll out in July, while RDNA 2 support is planned for early next year. This phased rollout follows a leaked DLL that allowed limited use of FSR 4 on RDNA GPUs except RDNA 1, but performance and quality were not ideal. The announcement has sparked curiosity about the optimizations AMD might have implemented to better tailor FSR 4.1 to these architectures.
A key technical discussion revolves around the differences in machine learning acceleration capabilities between the PlayStation 5 Pro and AMD’s RDNA GPUs. The PS5 Pro’s INT8 acceleration is significantly more powerful than that found on RDNA 3 and RDNA 2 cards, which impacts the performance and quality of upscaling. RDNA 3 features dedicated ML accelerators per compute unit but with lower throughput compared to the PS5 Pro, while RDNA 2 relies more on shader and vector integer paths, making its support for FSR 4.1 more challenging. These hardware limitations suggest that AMD may need to optimize or reduce quality to maintain reasonable performance on older GPUs.
There is speculation about whether FSR 4.1 will extend to integrated GPUs found in Ryzen processors and AMD-powered handheld devices or consoles. While the official announcement focuses on discrete Radeon 7000 and 6000 series GPUs, support for iGPUs remains uncertain, partly due to driver update complexities and vendor-specific delays. The potential for FSR 4.1 on consoles like Xbox and handheld devices is also discussed, with Xbox hardware having some INT8 and INT4 acceleration that could benefit from the technology, whereas PlayStation 5 lacks this hardware acceleration, limiting its real-time usefulness.
Performance-wise, early testing of the leaked FSR 4.1 DLL on RDNA 2 and RDNA 3 hardware showed that while the upscaler is usable, it comes with a significant performance cost, requiring users to lower input resolution to maintain frame rates. However, the improved image quality compared to previous versions like FSR 3 or XeSS may justify the trade-off for many users. Enthusiasts using the leaked version on devices like the Legion Go 2 have reported good results, and there is anticipation that the official release will feature further optimizations and enhancements.
Finally, there is speculation that the July release of FSR 4.1 for RDNA 3 GPUs might coincide with the launch of new hardware such as Valve’s Steam Machine, potentially boosting the appeal of such devices with improved image quality. The Linux driver ecosystem is also evolving to better support FSR 4, including enhancements for VRR and high refresh rates, which could further improve the user experience on AMD hardware. Overall, while the rollout has been slow, AMD’s confirmation of FSR 4.1 support for older architectures is seen as excellent news that addresses a long-standing demand in the gaming community.
