AMD released FSR4 Redstone a couple of weeks back, finally giving Team Red a frame generation technology that could go toe-to-toe with Nvidia’s DLSS. However, much like its rival, AMD decided to limit it to RDNA 4, so only gamers with RX 9000-series GPUs can take advantage of the new features that arrive with the latest drivers from the company. Reddit user u/AthleteDependent926 is not having this, though, as they created a workaround that allowed older RDNA 3 GPUs to take advantage of the tech.
According to the Redditor, this technique only works with RDNA 3 hardware and Linux operating systems. Aside from this, you need to install Valve’s Proton compatibility layer to make it work properly. But after you follow all the steps correctly, you should be able to enjoy machine-learning-powered neural radiance caching and ray regeneration even on older Radeon RX 7000-series GPUs. These features complement the already existing AI upscale and frame generation that dropped with FSR4, which was also limited to AMD’s latest graphics cards.
Incidentally, the company accidentally leaked the entire source code for FSR4 in August 2025, which allowed modders to reverse engineer the technology and make it compatible with RDNA 2 cards. Both the FSR4/RDNA 2 and FSR4/RDNA 3 mods allowed older hardware to enjoy these new features, but at a much higher performance cost. According to u/AthleteDependent926, FSR4 Redstone is much more demanding than FSR3, with the latency on their AMD Radeon RX 7800 XT at 0.13ms — almost double the reported 0.07ms achieved with the older frame gen tech, but still at an acceptable level.
Some gamers were livid when they discovered that RDNA 3 could run FSR4 Redstone, saying that AMD is no different from Nvidia for artificially limiting the performance of its older hardware. However, others were quick to point out that AMD could only be doing this to help boost the sales of its current Radeon RX 9000 series GPUs, and that once the sales of these graphics cards start to taper, they’re hoping that Team Red would eventually officially release it for older models that can still run it reliably.
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