The new DirectX Raytracing drivers are available now to download, and support raytracing on GTX cards, surprisingly.
For example, in Metro Exodus running at 1920x1080 resolution, even the GTX 1080 Ti won't be able to provide 30fps with Ultra DXR and Ultra Game settings. In which case there's going to be a lot more going on with this driver than just adding DXR support for more cards; NVIDIA's support schedule calls for Mobile Kepler to be moved to legacy status this month, so I'm expecting that this will be the first driver to omit support for those parts. It will also enable wider adopting of the feature which was only limited to the GeForce RTX cards till now. The drivers, which have always been baked into the DirectX Ray-tracing (DXR) API, will now enable GeForce GTX graphics cards to utilise the feature, albeit on a software level. Ray Tracing is finally available on GeForce GTX graphics cards. We discussed this in detail over here.
Ray tracing does carry a heavy performance hit - but the results from testing Pascal cards with the feature suggests that at least the 1080 Ti is capable of enabling the feature some of the time.
While this is indeed big news, it's probably best not to get too excited about the prospect of ray tracing on GTX GPUs.
Justice tech demo - Justice tech demo hails from China, and features ray traced reflections, shadows, and NVIDIA DLSS technology. We have talked about real-time ray-tracing here previously.
Reflections tech demo - The Reflections tech demo was created by Epic Games in collaboration with ILMxLAB and NVIDIA.
All AAA games with ray tracing use different methods.
The advanced features are already witnessed in 3DMark Port Royal which is a very GPU intensive benchmark. The effect is incredibly demanding and just goes to show how much extra horsepower the RTX series' dedicated RT cores deliver in this scenario.
As you can see from the results, GTX GPUs simply don't play well under those conditions. Based on the table above, you can see the types of ray tracing technique and it's characteristics. That's all due to their RTX specific GPU architectural enhancements. With basic reflections on Battlefield V, on the other hand, you'll see 30 fps on the 1080 Ti compared to 68.3 on the 2080 Ti. On the other side of that coin, if you've been on the fence about buying an RTX card because you're not sure if ray tracing is worth the additional cost, this could be a good way to get a feel for the tech before deciding to take the plunge (assuming, of course, that you've got a supported GTX card in your current rig). These are Battlefield V, Metro: Exodus and Shadow of the Tomb Raider.
Depending on the game and the complexity of the ray tracing it uses, faster GTX hardware is sometimes viable.