Currently, there are a few graphics cards that I can comfortably recommend for 4K gaming. And these are the GeForce RTX 3090 (Ti) and RTX 3080 Ti. If you want an AMD graphics card, there is the Radeon RX 6950 XT and RX 6900 XT. But their ray tracing performance is not as good compared to NVIDIA's. You can check out our article on the best 4K gaming graphics card here.