AMD FSR 4 Redstone Review @ TechPowerUp
TechPowerUp sees FSR Redstone as a genuinely important upgrade for owners of RDNA 4 based Radeon RX 9000 cards, mainly thanks to the fully machine learning driven frame generation and improved ray tracing cleanup. The new ML frame generation model finally puts AMD on roughly equal footing with NVIDIA in this area, with image quality that often matches DLSS and in some scenes even looks cleaner, especially around motion and shadow detail. Compared to the old FSR frame generation, the improvement is described as dramatic. The big caveat is that this step forward is basically limited to the newest Radeon generation, with nothing substantial added for previous RDNA cards despite community hopes for an officially supported compatibility path.
AMD's FSR Redstone is finally here—and it's more than just another FSR update. With ML-powered frame generation that can match (and sometimes beat) DLSS, smarter ray tracing cleanup, and excellent driver-level support, Redstone turns FSR into a competitive performance solution.
Beyond frame generation, the review calls Ray Regeneration another strong piece of the puzzle. It does not transform ray traced scenes in still shots, but it noticeably sharpens and stabilizes reflections and lighting while adding only a small performance cost, and it can be enabled on its own without forcing FSR upscaling, which gives developers and players more flexibility than NVIDIA’s approach. Radiance Caching is treated as the most ambitious but also the most uncertain part of Redstone: in theory it offers fully real time, continuously learning global illumination that avoids pre baked limitations, but there is very little shipping game data yet, so the verdict is still pending. On the software side AMD earns unqualified praise for the driver level override system that can transparently upgrade older FSR integrations, complete with a clear in game overlay. In the end, TechPowerUp sees Redstone as a meaningful step forward that brings AMD much closer to DLSS, but notes that limited game support, missing higher frame generation multipliers and the current focus on RDNA 4 only hold it back from being a complete answer.
Related Web URL: https://www.techpowerup.com/review/amd-fsr-4-redst...
