https://wccftech.com/nvidia-resizable-bar-support-for-geforce-rtx-30-gpus-on-both-desktop-notebook-platforms/

NVIDIA has finally announced its support for the Resizable-BAR feature on its GeForce RTX 30 series graphics cards. AMD was the first to bring the feature to the consumer space with its Smart Access Memory (SAM) technology but NVIDIA is going to be the first to bring the technology to both mobile and desktop platforms.

NVIDIA has stated that they will be adding support for the feature through GeForce Game Ready Drivers and it will be compatible with both Intel and AMD CPU based systems. Having support on both AMD and Intel platforms might give NVIDIA an edge since AMD's solution only works with its Ryzen 5000 lineup and compatible X570 motherboards. The driver is said to launch in late February so around the same time as the availability of the GeForce RTX 3060 graphics card.