AMD has released FSR “Redstone” SDK 2.4, a developer update that expands support for machine-learning-based FSR Upscaling 4.1.2 and adds Vulkan support for several upscaling and frame-generation components. The clearest hardware change is compatibility with Radeon RX 6000-series discrete graphics cards, based on RDNA 2, alongside selected Ryzen processors with integrated Radeon graphics. This is an SDK update for game developers: it does not automatically add the new upscaler to every existing game. The full FSR Upscaling 4.1.2 model is supported on Radeon RX 9000, RX 7000 and RX 6000 desktop graphics cards, as well as Ryzen AI Max 300 and 400 processors. AMD also lists support for Ryzen AI 9 300 and 400, Ryzen AI Z2 Extreme, Ryzen Z2 Extreme and Ryzen Z2 A processors. For the less powerful integrated graphics in several of those systems, the SDK includes a smaller model that AMD says is less than half the size of its full INT8 model. AMD says the hardware is selected automatically, while noting that integrated GPU performance can depend on shared memory bandwidth and power and thermal limits. The company describes SDK 2.4 as its first Redstone release with Vulkan support at feature parity with DirectX 12 for its listed upscaling and frame-generation effects. That support covers FSR Upscaling 4.1.2, FSR Frame Generation 4.0.2, Frame Generation Swapchain 4.0.0 and specified FidelityFX Super Resolution 3.1.6 and 3.1.7 components. Vulkan support is supplied through the SDK’s DLLs, so developers need to integrate the updated package into their games. Existing Vulkan titles using earlier FSR 3.1 features do not receive the new machine-learning upscaler through a driver override. There is an important distinction between the broad upscaling support and the newest frame-generation features. FSR Frame Generation 4.0.2 and its swapchain component require Radeon RX 9000-series hardware or later. AMD’s Driver-Assisted Frame Pacing also requires Adrenalin Edition 26.10.1 or newer, compatible fullscreen presentation, VSync disabled within the display’s variable-refresh-rate window, and use of the supported swapchain path. Under those conditions, AMD says final presentation timing can be handled closer to the display pipeline, reducing CPU overhead and improving frame delivery. It falls back to the existing pacing path when those requirements are not met. Ray Regeneration 1.2.1 adds standalone ambient-occlusion and specular-occlusion denoising, but remains limited to DirectX 12 in this release. Radiance Caching is still a technical preview. AMD says the SDK package and limited source are available to developers now; adoption in commercial games will depend on individual integrations. Players should therefore treat this as an expansion of developer options and hardware reach, not a universal driver-level upgrade or a guaranteed performance increase in every title. SDK feature Details Release AMD FSR SDK 2.4 ML upscaling FSR Upscaling 4.1.2 Discrete GPU support Radeon RX 9000, 7000 and 6000 APIs DirectX 12 and Vulkan 1.2 for listed upscaling/frame generation Driver-assisted pacing RX 9000-series, Adrenalin 26.10.1+
