The AMD Ryzen 9 9950X is the objective winner of this comparison, securing victory across nine of the fourteen evaluated specifications. Its most significant technical advantage is the L3 Cache, which is 113% larger than that of the Intel Core i9-12900K. This substantial increase in cache capacity provides the primary performance edge for the newer processor, establishing it as the superior option based on the provided data points.

Users prioritizing maximum processing potential and cache-heavy workloads should select the AMD Ryzen 9 9950X for its clear lead in the majority of specifications. Conversely, the Intel Core i9-12900K remains a viable alternative for those who specifically require a 26% advantage in TDP. Choosing between these two components depends on whether your priority is the superior cache capacity of the former or the thermal design power efficiency offered by the latter.