The Intel Core i5-14400 is the objective winner of this comparison, securing victories in nine out of fourteen measured specifications. Its most significant technical advantage is the L2 Cache, which is 138% larger than that of the alternative. While the Intel Core i7-11700K maintains a lead in base clock speed, the superior cache capacity of the newer processor provides a more substantial improvement across the majority of the evaluated metrics.

Users prioritizing modern architecture and the efficiency of a larger L2 cache should select the Intel Core i5-14400 for their build. Conversely, the Intel Core i7-11700K remains the appropriate choice for those who specifically require the 44% higher base clock speed provided by that model. Choosing between these two components depends entirely on whether your workload benefits more from the increased cache density of the newer unit or the higher base frequency of the older one.