https://wccftech.com/nvidia-geforce-driver-451-48-directx-12-ultimate/ > A new NVIDIA GeForce Game Ready Driver is now available for download, bringing full support for DirectX 12 Ultimate and more > The 451.48 WHQL driver introduces full support for the DirectX 12 Ultimate graphics API, including support for DirectX Raytracing version 1.1, mesh shaders, variable-rate shading, and more.