Nvidia has just released it’s newest Studio Driver update, which brings optimizations for Cycles among other creative applications.
This newest update brings speedups in renders when using OptiX on RTX cards thanks to their RT and Tensor cores.
OptiX rendering on non-RTX cards has recently been introduced in Blender 2.90 thanks to the continuous efforts of the Blender dev team, bringing about performance improvements accessible to all Nvidia GPU users.
Blender 2.90 also brings NVLink support to cycles, allowing RTX multi-card setups to render significantly faster and bigger scenes, thanks to NVLink combining the total VRAM of both cards.
Check out the release post for more information.