Radeon RX 9000 GPUs Get DLSS 4.5 Support And RDNA 4’s FP8 Muscle Is Key
The modder responsible for d4r (also known as "dlss 4 radeon»), Countervolts, has released an update providing preliminary support for AMD graphics hardware based on the RDNA 4 architecture. This update leverages the native FP8 matrix units found in the upcoming Radeon RX 9000 series to enable DLSS 4.5 support.
Technical Implementation and d4r Capabilities
The d4r tool allows users to forcibly enable NVIDIA DLSS on AMD hardware, a feature that previously extended back to the RDNA 3-based Radeon RX 7000 series. It is important to note that running DLSS on AMD hardware does not necessarily result in better performance compared to AMD FSR at the same internal resolution, but the experiment remains a significant technical milestone.
The latest update from Countervolts focuses on performance improvements and the addition of new features. By utilizing the FP8 matrix units inherent to the RDNA 4 architecture, the mod can better tap into the hardware's capabilities for handling neural-based upscaling tasks.
Limitations and Alternative Projects
While the update brings new functionality, the current version of d4r does not support advanced features such as frame generation, ray reconstruction, or neural rendering.
For users interested in exploring neural rendering on AMD GPUs, other community efforts are already underway. Some mods have successfully implemented these technologies within web browsers, while the DLSS-NR project is specifically dedicated to porting DLSS 5 to AMD hardware. While breaking down proprietary manufacturer walls often meets friction, the development of tools like d4r provides valuable insights into cross-platform compatibility.
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