Xbox Series X: The Most Powerful and Compatible Next-Gen Console with Thousands of Games at Launch
https://news.xbox.com/en-us/2020/05/28/xbox-series-x-next-generation-backward-compatibility/
Xbox Series X: Backwards compatible games run native on XSX with full power of CPU/GPU/SSD. Quick resume feature also works with BC titles. Some games will have support for double frame rate (30 fps to 60 fps / 60 fps to 120fps)