The Intel Core i5-14400 is the objective winner of this comparison, securing more total spec victories across the evaluated fields. Its most significant technical advantage over the AMD Ryzen 7 3700X is its L2 cache capacity, which is 138% larger. While the AMD Ryzen 7 3700X maintains a notable lead in L3 cache size, offering a 60% advantage in that specific category, the Intel Core i5-14400 demonstrates superior overall hardware specifications based on the data provided.

Users prioritizing the substantial L2 cache advantage should select the Intel Core i5-14400 for their build. Conversely, the AMD Ryzen 7 3700X remains the logical choice for those who specifically require the 60% larger L3 cache capacity provided by that processor. Your final decision should depend on whether your specific workload benefits more from the expanded L2 cache of the Intel chip or the superior L3 cache offered by the AMD alternative.