The mid-range MediaTek Dimensity 8300 has shown up on Geekbench. It performs remarkably better than the Dimensity 8200 and outdoes the Snapdragon 7+ Gen 2 in multi-core performance. https://www.notebookcheck.net/MediaTek-Dimensity-8300-makes-Geekbench-debut-with-upcoming-Redmi-device.768925.0.html
There is no Cortex-X3 core, its just another A715 core
This is first middle SoC from Mediatek with 4k@60fps for cams. Ok...