The Intel Core i5-14600K is the objective winner of this comparison, securing victories in ten out of fourteen measured specifications. Its most significant technical advantage over the Intel Core i7-8700K is its L2 cache capacity, which is 1233% larger. This substantial increase in cache size provides the newer processor with a clear architectural lead across the majority of the evaluated metrics, establishing it as the superior component in this head-to-head assessment.

Users prioritizing modern architecture and the massive L2 cache advantage should select the Intel Core i5-14600K for their build. Conversely, the Intel Core i7-8700K remains a viable option for those who specifically require its 48% advantage in Max Turbo Power. Choosing between these two processors depends on whether your specific computing needs are better served by the significantly expanded cache of the newer model or the power profile of the older unit.