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.