A Twitter user Locuza posted an image of Zen 3 die. The die is overlaid with descriptions of the logical units. The CPU is a 8 core 16 thread processor. R5 5600X.
Immediately it’s clear that the Zen 3 cores are longer than the Zen 3 cores. Zen 3 is redesigned over Zen 3 to be more effective and the logic area is definitely more complex.
The cache are in the core is designed to be handled by a crossbar so that any core can access the cache as needed.