The Intel Core i9-14900KS is the objective winner of this comparison, securing victory in nine out of fourteen measured specifications. Its most significant technical advantage over the Intel Core i7-8700K is its L2 cache, which is 2033% larger. This massive increase in cache capacity provides the newer processor with a substantial architectural lead, establishing it as the superior option for users prioritizing modern hardware capabilities and high-density data processing tasks.

Users should choose the Intel Core i9-14900KS if they require the extensive L2 cache capacity for demanding workloads. Conversely, the Intel Core i7-8700K remains a viable alternative for specific use cases, as it maintains a 62% advantage in Max Turbo Power. This makes the older chip a more suitable selection for those who specifically prioritize the power efficiency profile defined by its lower maximum turbo power rating over the raw cache performance of its successor.