The Intel Core i7-14700 is the objective winner, securing victories in eleven out of fourteen comparable specifications. Its most significant advantage over the Intel Core i7-8700K is its L2 cache, which is 1767% larger. This massive disparity in cache capacity represents the primary technical improvement offered by the newer architecture, providing a substantial structural lead that defines the performance gap between these two processors across the majority of measured categories.

Users prioritizing modern architectural efficiency and the benefits of a significantly larger L2 cache should choose the Intel Core i7-14700 for their builds. Conversely, the Intel Core i7-8700K remains a relevant option for specific use cases that rely on a higher base clock, where it maintains a 76% advantage. Select the former for general high-performance computing or the latter if your specific workload is optimized for the higher base frequency provided by the older model.