Apparently someone at AMD left this info lying around on Github, which was found before it was taken down (and presumably someone is now out of a job). Am amazed there is this much disparity between the Xbox and PS5, although there will likely be a PS5 Pro with the same 56CU chip.
https://www.guru3d.com/news-story/amd-based-xbox-series-x-could-have-3584-shader-processors.html
