At NVIDIA's CES 2019 presentation, the company showed a new technology called DLSS. In demonstrations, everything except the performance field eliminates in games that allow stylish new ray-tracing graphics on RTX cards. But how does it work?
What is DLSS?
DLSS stands for "deep learning super sampling." There are two parts to this idea, but let's focus on the other one: super sampling.  Super sampling is something you can do on your machine right now with many games. It essentially does the game in a resolution beyond what your screen can support. It sounds weird, but it can help to pull out some of the hard edges in polygonal graphics. NVIDIA and AMD cards already support this technology, as well as some PC games on their own. To learn more about super sampling, check out this article.
Now on to the "deep learning" section. Deep learning is something of a nebulous term: it basically means tons and lots of calculations run on high-powered hardware in a process that improves over time. Some applications call this "artificial intelligence" (AI), but it is a dissatisfaction; the system is not "learning" in any human sense, it just gets better in a repetitive process.
NVIDIA's DLSS system runs super-sampling on a specific game, over and over again, on the graphics cards in its massive data centers. It calculates the best ways to apply the supersampling technique to a game with repetitive processing on the game's visual images – the polygons and textures that make up what you see on your screen. The "deep learning" part of the process comes into play here; The system learns as much as possible about how the game looks and how it looks better.
Combine super sampling for softer polygon lines and textures with deep learning to apply general improvements to a game, and you get DLSS. Image enhancement techniques, which are already calculated on NVIDIA's data center, are applied to flights via the Tensor processing cores in the RTX card.
NVIDIA engineers explained and demonstrated the process to us, who ran a graphical benchmark on CES. The improvements over a non-DLSS setting were impressive, with smoother, smoother textures and polygons apparent. This was true even when the DLSS machine did its graphics at a lower power (1080p) than the non-DLSS machine (1440p).
How does it make a game run faster?
The DLSS system applies general improvements to a game s visual, especially if you run the game with NVIDIA's ray tracking enhancements enabled. Ray-tracing, first introduced with RTX series cards, enables more accurate reflections, shadows and diffusion of light with some amazing results. We have already covered the ways in which ray tracing can improve in game visual.
Unfortunately, raytracing also increases the load on the GPU. The load is so high that many games fall below the desired 60 frames per second, even when using the latest NVIDIA cards and advanced components in the rest of the computer.
Using Predicted DLSS enhancements, which the RTX-GPUs in NVIDIA's data center have already crunched, can smooth out the performance of RTX enabled games. In his CES demonstration, a game with ray tracing and DLSS was activated in either a frame or two of the game that ran without any raytracing being able to be activated at all. To put it as simply as possible: DLSS enables games to run much faster with more fine lighting effects.
NVIDIA explains that the process is not perfect: DLSS may in some rare cases wash out textures or geometry.
Can my card use DLSS?
DLSS is a feature of NVIDIA's proprietary Tensor processing core, which is available on the Turing GPU architecture in the new RTX cards. If you have a GeForce RTX graphics card, you can use DLSS. If you don't, you can't. So, the still popular GeForce GTX 900 and 1000 series cards can't benefit from DLSS.
Do I need a web connection to use it?
no. While the DLSS process utilizes large amounts of cloud computing hardware – large NVIDIA server farms packed to the works of industrial versions of RTX graphics cards – the process runs on your local computer when the system is set up and enabled. Just make sure you run the latest drivers.
Is my game compatible with DLSS?
Here is rub: The deep learning part of DLSS requires months of processing in NVIDIA's data center before it can be applied to PC games. So for every new game coming out, NVIDIA has to run their gigantic GPU arrays for a long time to get DLSS ready.
When the heavy lift is finished, NVIDIA will update its GPU drivers and enable DLSS on the new game, as the developer can activate it by default or allow it as a graphics option in the setup menu. Since the deep learning system must look at the geometry and structures of each game individually to improve the performance of the specific game, there is no way around this "one at a time" mode. It will be faster because NVIDIA improves it – possibly straight down to weeks or days for a game – but for the moment it takes a while.
At the time of writing (January 2019), only one game has DLSS that you can activate on a gaming PC at home: Final Fantasy XV . It is also in a beta form and only works on the highest resolutions. Early testing shows that it actually increases the frame rate by 10-15 FPS-about the same amount that you lose by enabling RTX ray tracking in other games. (Right now, FFXV does not support radiation tracking, so the DLSS boost is not applied where it really is needed.)
NVIDIA has announced a list of other existing and upcoming games that will support DLSS eventually – probably the company is running its data centers to Get it clear. Currently, NVIDIA has confirmed upcoming DLSS support for twenty-five games, with remarkable titles, including Hellblade: Senna's Victims, ARK: Survival Developed, Atomic Heart, Hitman 2, Mechwarrior V, Playerunknown's Battlefields, Tomb Raider's Shadow , and We Happy Get . At CES, the company also announced that Battlefield V and the forthcoming Anthem will support the DLSS the latter can even get the processing ready when it is ready for release.
 Games that will support both RTX exclusive beam tracking effects and the performance-enhancing DLSS system are a short list:
- Atomic Heart
- Battlefield V
- MechWarrior V  Tomb Raider Shadow
- Justice Online
Of course, the list will grow, as developers become more comfortable with radiation, NVIDIA releases and speeds up its DLSS calculation process and PC players require access to the full features in their RTX-labeled graphics cards.