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DLSS 5 Modders Get Hybrid FP8/NVFP4 Running on RTX 50 GPUs, But Performance Improves by Just 1-2%
Wccftech • • technology
Key Points:
- Modders have introduced a hybrid FP8/NVFP4 version of NVIDIA's DLSS 5 Neural Rendering model for GeForce RTX 50 Series GPUs, aiming to reduce its significant performance cost.
- The hybrid model offers only a minor 1–2% reduction in Neural Rendering pass time at 4K compared to the original FP8 implementation, with negligible impact on overall game performance.
- NVFP4 has potential benefits like reduced memory usage and native Blackwell Tensor Core acceleration, but effective gains require proper quantization and optimization rather than simple model conversion.
- Further optimizations in version 0.7.2 promote the hybrid NVFP4 model as recommended for Blackwell GPUs, though performance improvements remain minimal and not consistently repeatable.
- NVIDIA continues to optimize DLSS 5, which remains highly computationally intensive, with the technology already five times faster than its initial 2026 demo and plans for future enhancements and RTX 40 Series support.
