https://wccftech.com/msi-amd-smart-access-memory-amd-ryzen-3000-ryzen-4000g-cpus-with-nvidia-geforce-rtx-30-gpus/

MSI has just provided us with the latest screenshots of their X570 motherboards supporting AMD Smart Access Memory on Ryzen 3000 'Matisse' and Ryzen 4000G 'Renoir' CPUs with NVIDIA's RTX 30 series graphics cards.

We have already seen the Resizable-Bar feature or as SAM, as AMD likes to call it, enabled for NVIDIA GeForce RTX 30 GPUs on the Intel Z490 platform. We have also seen ASUS adding support for Smart Access Memory for 1st Gen Ryzen CPUs. But it looks like specific board makers, including MSI, will be offering even wider support for SAM on Ryzen 3000 and Ryzen 4000G CPUs.