Unlocking DLSS 3 (by FSR3) Performance on Older NVIDIA GeForce RTX 20/30 Series Cards through Modding

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The latest RTX 40 series graphics cards from NVIDIA incorporate new technologies like DLSS 3, which are designed to enhance gaming performance and image quality significantly. However, these advancements, particularly the Frame Generation feature of DLSS 3 that relies on the Ada Lovelace architecture's dedicated hardware, are not officially available on the older GeForce RTX 20 and 30 series cards. In response, the modding community has developed a workaround to enable DLSS 3 functionality on these older models.

This unofficial modification involves activating FSR 3 upscaling and AMD Fluid Motion Frames on legacy NVIDIA cards that have Tensor Cores. The process requires the replacement of two specific DLL files and a minor modification to the Windows registry to enable DLSS 3 in supported games.

Following the application of this mod, games can utilize DLSS 3 by replacing the necessary DLL files and adjusting the registry to mimic a DLSS 3-compatible graphics card. Preliminary testing of this modification has demonstrated up to a 75% increase in frame rates, akin to the performance uplift seen with official DLSS 3 implementations. Tested games include Cyberpunk 2077, Spider-Man: Miles Morales, and A Plague Tale: Requiem, among others.

Despite the performance improvements, there are some potential drawbacks, such as minor visual artefacts and occasional frame time inconsistencies. Notably, while the FSR 3 technology is from AMD, the modification currently works only on NVIDIA cards, highlighting the community's resourcefulness in extending new features to older hardware. However, users should be aware that this is an unofficial solution and may lead to unexpected issues. The irony lies in the fact that, despite AMD being the originator of the technology, its cards do not currently support this mod.


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