The Intel Core i5-12600KF is the objective winner of this comparison, securing victory 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 533% larger. This substantial increase in cache memory provides the primary performance edge for the newer processor, making it the superior choice across the majority of the evaluated hardware metrics.

Users prioritizing modern architecture and memory efficiency should select the Intel Core i5-12600KF for its massive L2 cache advantage. Conversely, the Intel Core i7-8700K remains a viable option for those specifically seeking a processor with a 37% higher Max Turbo Power rating. Your decision should depend on whether you value the significant cache capacity improvement found in the newer model or the specific power profile offered by the older component.