The AMD Ryzen 9 9900X is the objective winner of this comparison, securing a lead in nine out of fourteen evaluated specifications. Its most significant technical advantage is the L3 Cache, which is 156% larger than that of the Intel Core i7-12700K. This substantial increase in cache capacity represents the primary performance differentiator between the two processors, establishing the former as the superior option across the majority of the measured hardware metrics.

Users prioritizing high-end technical specifications and the benefits of a significantly larger L3 Cache should choose the AMD Ryzen 9 9900X. Conversely, the Intel Core i7-12700K remains a viable alternative for budget-conscious builders, as it holds an 18% advantage in MSRP. Selecting between these two components depends on whether the user values the superior cache capacity and broader spec-win count of the newer model or the cost efficiency offered by the latter.