The Intel Core i9-13900K is the objective winner of this comparison, securing victory in eight of the sixteen evaluated categories. Its most significant technical advantage is the inclusion of E-Cores, which provide a 300% improvement over the Intel Core i5-14400F. While the latter component remains competitive in four specific areas, the superior core architecture of the former establishes it as the more robust hardware option based on the provided specifications.

Users prioritizing high-density processing tasks should select the Intel Core i9-13900K to leverage its substantial E-Core advantage. Conversely, the Intel Core i5-14400F is the recommended choice for budget-conscious buyers, as it offers a 67% better MSRP. Choosing between these two processors depends entirely on whether your primary requirement is the expanded core count of the higher-tier model or the cost-efficiency provided by the more affordable alternative.