– DLSS 4.5 Ray Reconstruction uses a new second-generation transformer model with 35% more compute and 20% more parameters.
– It functions as both a denoiser and image reconstruction system, improving lighting accuracy, temporal stability, and reducing ghosting.
– The update benefits from a larger training dataset and gives developers finer control over temporal accumulation.
– It will launch in August via the Nvidia app and supports all GeForce RTX GPUs.
– Beyond gaming, Blender 5.3 will integrate it as a viewport denoiser later this year.
Nvidia Announces DLSS 4.5 Ray Reconstruction
Nvidia has announced DLSS 4.5 Ray Reconstruction, a major upgrade to its AI-powered ray tracing pipeline that promises noticeably better image quality accross all GeForce RTX GPUs. Building on the DLSS 4.5 suite introduced earlier this year, the update adds a second-generation transformer model designed to improve how ray-traced and path-traced scenes are reconstructed.
How it Differs From Traditional Denoisers
Unlike traditional denoisers that rely on hand-tuned algorithms, DLSS Ray Reconstruction uses an AI model trained on Nvidia supercomputers to generate cleaner, more accurate pixels in areas where rays werent sampled.
Transformer Model Upgrades and Benefits
The biggest change comes from a new transformer model that acts as both a denoiser and image reconstruction system. Nvidia says the updated model delivers 35 per cent more compute capability and processes 20 per cent more parameters while maintaining performance levels similar to its predecessor. The company claims this translates into improved lighting accuracy, better temporal stability, reduced ghosting, and clearer motion in demanding ray-traced workloads. Upscaling routines have supposably received an improvement as well.
Supported Games and Enhanced Training Data
DLSS 4.5 Ray Reconstruction also benefits from a significantly expanded training dataset. According to Nvidia, the larger dataset allows the model to better identify and utilise the most accurate game-engine data, helping reconstruct scenes closer to their intended appearance. Developers will also gain finer control over temporal accumulation, enabling more precise tuning for specific visual effects and rendering scenarios. However, it is interesting that Nvidia made no mention of DLSS 5, which was expected to hit the show floor at Computex. Has its development been called off or is Nvidia cooking something else? Only time will tell.
Showcase in Specific Titles
Moving on, Nvidia showcased the improvements in several titles. In Indiana Jones and the Great Circle, the new model reportedly reduces snow ghosting while producing cleaner particle effects. Pragmata benefits from more responsive lighting effects and fewer visual artefacts, while Alan Wake 2 shows improved stability and clarity in scenes featuring CRT static.
August Launch and GPU Support
The feature will launch in August through the Nvidia app and will support all GeForce RTX GPUs.
Beyond Gaming: Blender Integration
Beyond gaming, Blender 5.3 will integrate DLSS 4.5 Ray Reconstruction as a viewport denoiser later this year. Nvidia also confirmed that multiple games are recieving broader DLSS 4.5 support, including Marvel Rivals, Phantom Blade Zero, Squad, Gothic 1 Remake, Cinder City, Duet Night Abyss and Where Winds Meet.
Nvidia.com/news