The new upscaling model fixes the biggest shortcomings.
Nvidia’s recently announced DLSS 4 technology is slowly approaching, but some journalists, including Digital Foundry’s Richard Leadbetter, were able to try it out ahead of its release. In particular, he was able to play Cyberpunk 2077 for about 5 hours on the upcoming RTX 5080 graphics card.
Although the main new feature of DLSS 4 is Multi Frame Gen, the upscaling and Ray Reconstruction features have undergone equally interesting changes. Both move from traditional convolutional neural networks to the so-called Transformer model, which also uses the popular ChatGPT tool.
First impressions are very positive, thanks to the new upscaling model, for example, ghosting, that is, traces left by moving objects, has almost completely disappeared. The new version of upscaling simultaneously restores higher detail and reduces the amount of flicker.
The same applies to the new version of beam reconstruction – significantly higher reflection detail or better stability. But for now we only have a few comparisons and only from one game, so we’ll have a much better picture when DLSS 4 comes out.
In any case, Leadbetter also looked at Multi Frame Gen, a technology exclusive to the RTX 50 series that provides the ability to generate up to three frames per one classically rendered.
Unfortunately, the Digital Foundry editor was not yet able to provide exact FPS numbers, but he was able to show that compared to native 4K resolution in RT Overdrive mode (path tracing), the performance boost of DLSS 4+ classic frame generation provides approximately 5 times higher FPS when generating two frames, this is 7 times more and even 9 times more with a maximum of 3 frames.
The RTX 5080 with Multi Frame Gene and Transformer scaling was about twice as fast as the RTX 4080 with Classic Frame Gene and CNN scaling.
The topic of latency is also interesting because Frame Gen does increase FPS, but it also increases input lag, so it’s not a classic performance increase. The results are very surprising: while the classic Frame Gen has an average latency of 51 milliseconds, generating two frames increases it to just 55 ms, and the maximum Frame Gen with three frames increases it to 57 ms. These are not bad numbers at all, and the new Frame Gen model also delivers more consistent frame rates.
DLSS 4 will appear in 75 games on January 30, when the RTX 5080 and 5090 cards will also be released.
Source : Zing
