The AMD Ryzen 9 9900X3D 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 412% better than that of the Intel Core i7-12700KF. This substantial capacity difference represents the primary performance differentiator between the two processors, establishing the former as the superior option based on the provided hardware metrics.

Users prioritizing high-end technical specifications and the benefits of a significantly larger L3 Cache should choose the AMD Ryzen 9 9900X3D. Conversely, the Intel Core i7-12700KF is the appropriate selection for buyers who prioritize a lower MSRP, as it holds a 36% advantage in that specific category. Selecting between these two components depends on whether your primary requirement is the superior cache architecture or the cost-efficiency offered by the Intel alternative.