As of my knowledge cutoff in September 2021, some of the best graphics cards for 4K gaming are:
NVIDIA GeForce RTX 3090: The RTX 3090 is a flagship graphics card from NVIDIA, offering exceptional performance for 4K gaming. It has a massive amount of VRAM, powerful ray tracing capabilities, and excellent overall performance for high-resolution gaming. Best Graphics Card for 4k gaming
NVIDIA GeForce RTX 3080: The RTX 3080 is another high-end graphics card that delivers outstanding 4K gaming performance. It provides a balance between price and performance, offering excellent ray tracing capabilities and a significant boost in power compared to previous generations.
AMD Radeon RX 6900 XT: The RX 6900 XT is AMD's flagship graphics card, offering competitive performance in 4K gaming. It provides excellent rasterization and ray tracing performance, making it a strong contender for high-resolution gaming.
NVIDIA GeForce RTX 3070: The RTX 3070 is a high-performance graphics card that offers great value for 4K gaming. It provides a balance between price and performance, delivering smooth gameplay at 4K resolutions in most modern games.
AMD Radeon RX 6800 XT: The RX 6800 XT is another powerful graphics card from AMD that performs well in 4K gaming. It offers competitive performance and features like hardware-accelerated ray tracing, making it a good choice for high-resolution gaming.
It's important to note that technology advances rapidly, and new graphics cards are released regularly. Therefore, it's recommended to check for the latest options and reviews from reputable sources to ensure you are making an informed decision based on the most up-to-date information available.