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html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd" Table of ContentsTable of ContentsTransforming the DLSS modelOne frame, two frameThe flagship dilemmaIts hard to say if the RTX 5090 or DLSS 4 won Nvidia more limelight over the past week. The RTX 5090 is undoubtedly the best graphics card you can buy, but a big part of that conversation has involved DLSS 4 and its multi-frame generation capabilities. And for good reason. DLSS 4 is remarkable, enabling gaming experiences like full path tracing in Alan Wake 2at triple-digit frame rates without breaking a sweat.Still, Im worried.DLSS 4 represents a radical change for all RTX graphics cards, from multi-frame generation for the latest RTX 50-series GPUs to a new AI model that reaches down to cards like the RTX 2060 Super. For as impressive as DLSS 4 is, however, Im concerned that the floor will fall out from under it eventually.Get your weekly teardown of the tech behind PC gaming DLSS 4 is a much more significant update than you might believe. The headlining feature is DLSS Multi-Frame Generation or MFG, but this new version has tweaked every aspect of DLSS. That means that, yes, DLSS 4 will retroactively make DLSS better, even for older GPUs that dont support MFG.The big change is that Nvidia went from a convolutional neural network, or CNN, to a transformer model. Some games, such asCyberpunk 2077andAlan Wake 2,let you switch between the different models within the game. However, I suspect most games with DLSS will just stick with the transformer model moving forward. If, for some reason, you prefer the CNN, you can revert to it through the Nvidia app with its new DLSS override feature.DLSS 4 | New Multi Frame Gen & Everything EnhancedNvidia says that the new transformer model has more parameters, but more importantly, transformer models are self-referential. Instead of tracking every pixel throughout the scene, the new DLSS model can track specific pixels to improve image quality in problematic areas. Nvidia has demonstrated this capability, which you can see in the video above. There are clear improvements, but they arent universal.Cyberpunk 2077 - DLSS Transformer ModelAbove, you can see a comparison between the CNN and transformer model inCyberpunk 2077.Without labels or even with them, actually its basically impossible to tell the difference between the two images. I searched and searched, peeping at every pixel, to find some sort of clear difference between the two, and its just not there. Both look great, especially considering Im running in DLSS Performance mode, but I wouldnt say the transformer model is clearly better.Alan Wake 2 - DLSS Transformer ModelThe situation is identical inAlan Wake 2,where, once again, its basically impossible to tell the difference between the two images. Theres a slight difference in the detail on the bench, but Im struggling to attribute that to DLSS when theres some layer of water blurring the camera.But heres the thing the new transformer model doesntneedto be better, especially right now. Whats important is that its just as good as the CNN model, at minimum, and with no hit to performance. Youll see the benefits in some games and situations, but the transformer model isnt a glossy new coat of paint that covers all of DLSS. Treat it like one of Nvidias smaller DLSS updates, which have quietly made the feature better over the past several years.Cyberpunk 2077 - DLSS Transformer Model Scene 2There are some improvements here, too. Take a look at another scene fromCyberpunk 2077above. The new transformer model not only reproduces the reflections more clearly, it also deals with a ton of ghosting in the CNN model. There are these long, obvious trails behind each tail light as the cars pass the camera with the CNN model, and they completely disappear with the transformer model.This will likely improve over time. Nvidia has said that it has a supercomputer thats been improving DLSS for the past six years, and that work isnt stopping with the new transformer model. Although the benefits might not show up everywhere, theyre still a welcome addition. The transformer model is available to all RTX GPUs, and it covers not only DLSS Super Resolution but also Ray Reconstruction.OK, but I know why youre all here. Lets talk about MFG. Exclusive to RTX 50-series GPUs like the RTX 5090, DLSS 4 unlocks up to 4X frame generation one rendered frame alongside three generated ones. There are 75 confirmed games thatll support DLSS 4, though not all natively. Some will have MFG options in the graphics menu, while the rest will need a DLSS Override from the Nvidia app.Jacob Roach / Digital TrendsAnd MFG is really good in DLSS 4. The chart above speaks for itself on that front. In Alan Wake 2,I went from less than 30 frames per second (fps) on the RTX 5090 to well over 200 fps. Thats an exponential increase in performance and with excellent image quality in tow. Latency isnt an issue, either. Nvidia does a wonderful job these days of limiting the latency hit with frame generation, and adding a couple of extra frames into the mix doesnt significantly increase the latency it barely moves the needle.Jacob Roach / Digital TrendsThe situation is the same inCyberpunk 2077.Theres barely any additional latency with frame generation turned on, even up to 4X mode. Add DLSS Super Resolution into the mix to increase the base frame rate and reduce the total latency and youre sitting near 240 fps at 4K. The superpower of MFG is that its multiplicative; if you feed it with a higher base frame rate, youll get a larger performance boost out of it.Jacob Roach / Digital TrendsYoull get the best experience out of MFG if you feed it with at least 60 fps, andMarvel Rivalsis proof of that. In this title, my base frame rate is acceptable, and latency isnt a concern. In a game like this, I dont need to resort to DLSS Super Resolution. I can just use MFG to improve the smoothness of the game with a minuscule hit to the overall system latency.The overall latency only really becomes an issue if its high to begin with; as you barrel toward 0ms, even large spikes or dips in latency only represent a few milliseconds. If you have a higher base frame rate, even a 50% jump in latency might only move you from 20ms to 30ms. With a lower base frame rate, that same jump might move you from 100ms to 150ms. Same percentage, but the experience couldnt be more different. Marvel Rivalsis a good example of this dynamic.However, it also exposes my concern with DLSS 4 moving forward, particularly when it comes to weaker GPUs in Nvidias lineup.Above, you can see a video ofCyberpunk 2077with DLSS MFG running in its 4X mode. Im not using DLSS Super Resolution here, so Im feeding the AI model with a base frame rate of just under 30 fps somewhere around 27 fps if I remember correctly. This isnt how youd want to play Cyberpunk 2077.Theres a constant motion blur over everything, along with a ton of visual artifacts.Im using the RTX 5090 here at 4K, and thankfully you dont need to settle for this experience. Flick on DLSS Super Resolution to increase your base frame rate, and youre off to the races with a smooth experience free of visual artifacts.But we cant all buy an RTX 5090, can we?Something thats important to remember about DLSS is that its at its best when its pushing the next level of visual quality; its at its worst when its making up for hardware that cant hit the mark. DLSS Super Resolution looks and performs best at 4K. At 1080p, the performance gains are smaller and the visual quality is worse. DLSS Frame Generation is spectacular if youre trying to climb into the triple digits when you already have a playable base frame rate. It falls apart with visual artifacts and unmanageable latency if you dont walk in the door with that playable frame rate. The same problems are here with MFG, and theyre magnified.Eventually, Nvidia will move onto RTX 50-series GPUs lower in its product stack. It hasnt officially revealed its budget offerings, but Id be shocked if we didnt see an RTX 5060 at some point. Its sure to be a popular GPU, likely due in no small part to DLSS 4. But will the GPU itself be powerful enough to capitalize on DLSS 4? Will MFG even be an option for players who cant get to that 60 fps mark in demanding games?Jacob Roach / Digital TrendsThe idea brings me back to the Surface Laptop Studio 2. When the laptop was announced with an RTX 4060, I wrote about how Nvidia is enabling a new tier of gaming experiences on hardware that otherwise wouldnt be suited for prestige titles like Cyberpunk 2077.You may get some visual artifacts, and you may not get perfect upscaling. But its at least possible to play these games thanks to Nvidias dedication to shortcuts on the rendering pipeline.That dynamic is thrown off when looking at MFG. It can provide what looks like a high frame rate, but without enough power to back that up, it falls apart. The video above is a clear example of that. My concern is that the bottom of DLSS 4 will fall out from under it when weaker hardware is brought into the mix. You can compromise on upscaling; you can even compromise on frame generation in titles that arent latency-sensitive. Here, with MFG, its hard to accept the compromises if you cant feed the AI with at least 60 fps.This isnt a critique of Nvidia. I dont believe a $300 graphics card or however much the RTX 5060 ends up being should match the experience of a $2,000 graphics card like the RTX 5090. However, it is an important note. Its easy to look at the benchmarks and dream up what DLSS 4 could do for budget GPUs, but Im holding my breath until those GPUs are here to see if theyre powerful enough to even take advantage of the feature.Thats something that will need to be settled once those GPUs are here, though. For now, DLSS 4 is very impressive. If you feed it with at least 60 fps, it feels like wizardry. Add on top of that a new transformer model that promises even larger image quality improvements over time, and its clear that Nvidia wants DLSS to remain at the forefront of PC gaming tech.Editors Recommendations