The Intel Core i9-12900K is the objective winner of this comparison, securing victory in eight of the fourteen evaluated categories. Its most significant technical advantage is the L2 cache, which is 460% larger than that of the Intel Core i9-10900K. This substantial increase in cache capacity represents the primary performance differentiator between the two processors, establishing the newer model as the superior option based on the provided specifications.

Users prioritizing the most advanced architecture and cache capacity should select the Intel Core i9-12900K for their build. Conversely, the Intel Core i9-10900K remains a viable alternative for those focused on the initial MSRP, where it maintains a 17% advantage over the newer component. Choosing between these two processors depends on whether your priority is the significant cache improvement offered by the newer model or the cost efficiency provided by the older unit.