AMD FSR SDK 2.4 Extends ML Upscaling to Radeon RX 6000 GPUs and Ryzen APUs with Vulkan Support

AMD FSR SDK 2.4 Expands Hardware Reach with Machine-Learning Upscaling

AMD has released FSR "Redstone" SDK 2.4, a developer-focused update that extends machine-learning-based FSR Upscaling 4.1.2 to Radeon RX 6000 Series discrete graphics cards based on RDNA 2, alongside Radeon RX 9000 and RX 7000 desktop GPUs1

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. This marks a significant expansion for AMD's AI-driven upscaling technology, bringing neural rendering capabilities to older hardware that many gamers still use. The update also introduces full Vulkan support for upscaling and FSR Frame Generation, improved frame pacing for newer GPUs, and enhanced denoising for ray-tracing workloads.

The FSR Upscaling 4.1.2 support now covers Ryzen AI Max 300 and 400 processors, Ryzen AI 9 300 and 400, Ryzen AI Z2 Extreme, Ryzen Z2 Extreme, and Ryzen Z2 A processors1

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. For gamers still running cards like the Radeon RX 6800 XT, FSR 4.1.2 unlocks dramatically improved image quality over FSR 3.1, offering a new tier of visual fidelity for RDNA 2 users2

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. This expansion matters because it demonstrates AMD's commitment to supporting existing hardware with cutting-edge features, rather than limiting advanced capabilities to the newest generation.

Automated Model Selection for Different Hardware Capabilities

AMD has implemented an automated model selection system within FSR Upscaling 4.1.2 to accommodate varying AI capabilities across different hardware2

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. More capable systems with Radeon 8000S Series GPUs run the full INT8 model, while lower-tier Ryzen processors with integrated Radeon graphics utilize a new lightweight INT8 model that's less than half the size of the full implementation1

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. This lightweight version is specifically tuned for performance on less powerful integrated graphics.

The hardware selection happens automatically, though AMD notes that integrated GPU performance depends on shared memory bandwidth, power limits, and thermal constraints1

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. AMD showcased image-quality comparisons in Crimson Desert running on a Radeon RX 6800 XT and Resonance: A Plague Tale Legacy on a Ryzen AI 9 HX 370, demonstrating the benefits of ML-based reconstruction over FSR 3.13

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. For Ryzen laptop and handheld gaming, this update represents a game-changing improvement in image fidelity.

Vulkan Support Achieves Feature Parity with DirectX 12

AMD FSR SDK 2.4 represents the company's first Redstone release with Vulkan support at feature parity with DirectX 12 for listed upscaling and frame-generation effects1

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. The Vulkan support for upscaling 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 components1

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However, there's an important limitation. Vulkan support is supplied through the SDK's DLLs, meaning developers must integrate the updated package into their games1

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. Existing Vulkan titles using earlier FSR 3.1 features do not receive the new machine-learning upscaler through a driver override, unlike the automatic upgrade path available for DirectX 12 games1

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. Once developers integrate the new SDK, eligible Vulkan titles will support automatic upgrades to newer implementations through AMD's drivers3

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. With Vulkan support now available, adoption of FSR 4 advancements should accelerate across more games and platforms.

Frame Generation and Pacing Improvements for RX 9000 Series

While FSR Upscaling 4.1.2 supports a broad range of hardware, FSR Frame Generation 4.0.2 and its swapchain component require Radeon RX 9000 Series hardware or later1

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. AMD's new Driver-Assisted Frame Pacing feature, introduced with Frame Generation Swapchain 4.0.0, 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 path1

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Instead of relying on CPU-side busy waiting, the AMD display driver handles final presentation timing closer to the display pipeline, reducing CPU overhead and improving frame delivery consistency1

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. AMD recommends Windows 11 with Hardware-Accelerated GPU Scheduling enabled for optimal results3

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. The system falls back to existing frame pacing when requirements aren't met. Reports suggest FSR Frame Generation 4.0.2 fixes frame-pacing issues and finally brings AMD's technology in line with NVIDIA's implementation2

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Ray Regeneration and Developer Availability

Ray Regeneration 1.2.1 adds standalone ambient-occlusion and specular-occlusion denoising capabilities, representing AMD's answer to competing ray-tracing reconstruction technologies1

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. However, Ray Regeneration remains limited to DirectX 12 in this release and is exclusive to RDNA 4 and newer GPUs1

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. Radiance Caching remains in technical preview status1

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AMD FSR SDK 2.4 binaries and limited source code are now available to developers through GitHub2

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. The current Unreal Engine plugin still uses FSR Upscaling 4.1.1 and Frame Generation 4.0.1, with an update planned for later3

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. Since this is an SDK update for game developers, it does not automatically add the new upscaler to existing games1

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. Adoption in commercial games depends on individual developer integrations, so players should view this as an expansion of developer options and hardware reach rather than a universal driver-level upgrade1

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. Watch for game updates that integrate these new capabilities over the coming months.