Previous leaks were already suggesting that the RDNA3 GPUs should be more than twice as fast as the current RX 6800 XT models thanks to the multi-chip module approach, but fresh rumors now claim that the impressive raster and ray tracing performance of the RDNA3 is also enabled through a massive increase in Infinity Cache memory capacity.
https://www.notebookcheck.net/AMD-RDNA3-GPUs-rumored-to-steal-the-performance-crown-from-Nvidia-Hopper-in-mid-2022-due-to-massive-Infinity-Cache-improvements.547345.0.html