NVIDIA releases DLSS 310.9.1 SDK with Ray Reconstruction Preset F
NVIDIA has officially released the DLSS SDK version 310.9.1, introducing a significant update to its ray reconstruction technology with the public debut of Ray Reconstruction Preset F. This new model is built on NVIDIA's second-generation transformer architecture and is now available for direct integration by developers, removing the previous reliance on extracting files from specific games or using app overrides.
The core of this update is Preset F, which represents a shift in performance characteristics compared to its predecessors. According to NVIDIA's documentation, this new model utilizes approximately 20% more parameters and requires 35% more compute resources than the previous version. Despite these increased resource demands, NVIDIA states that the target performance remains similar to earlier iterations.
For developers working with RTX 40 and RTX 50 series GPUs, the trade-off is clear: Preset F consumes more memory and incurs slightly higher processing times. At a 4K resolution, for instance, memory allocation jumps from roughly 468 MB to 579 MB on the RTX 5090, while processing time increases from 1.83 ms to 2.12 ms. Results on older architectures like the RTX 20 and RTX 30 series are described as more mixed.
NVIDIA has also published detailed memory allocation and processing-time measurements alongside the SDK release. The documentation groups Default and Preset F together for comparison, while treating Presets D and E separately. This transparency allows developers to better understand the cost of enabling advanced ray reconstruction features in their applications.
The update is already reflected in third-party tools like DLSS Swapper, which has been updated to support version 310.9.1. Users can now download and replace the new DLSS files through this utility without needing to manually extract them from NVIDIA's SDK archive. Additionally, the Streamline SDK is noted to be available in both aarch64 and arm64ec variants, suggesting broader support for ARM-based systems.
While this release marks a step forward in making advanced ray reconstruction accessible to developers, there are no signs of DLSS 5 appearing in the immediate future. The focus remains on refining and distributing the current generation of transformer models through official channels rather than introducing entirely new major versions at this stage.
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