The Intel Core i9-13900KF is the objective winner of this comparison, securing a lead in eight out of fourteen measured specifications. Its most significant technical advantage is its L2 cache, which is 967% larger than that of the alternative. While the Intel Core i5-11400F holds its own in three categories, the superior cache capacity of the i9-13900KF represents the most substantial performance-related difference between these two processors.

Users prioritizing maximum hardware specifications and cache capacity should choose the Intel Core i9-13900KF for their build. Conversely, the Intel Core i5-11400F is the better option for buyers focused on the MSRP, where it maintains a 72% advantage over the i9-13900KF. Selecting between these two components depends on whether your primary goal is to secure the highest available cache specifications or to capitalize on the significant MSRP benefit offered by the i5-11400F.