The Intel Core Ultra 5 245K is the objective winner of this comparison, securing victories in eleven out of fourteen measured specifications. While the Intel Core i5-6600K maintains a 43% advantage in Max Turbo Power, the Intel Core Ultra 5 245K provides a significantly more robust architecture. Its most impactful technical superiority is found in the L2 Cache, where it outperforms the older model by a massive 2500% margin, ensuring vastly improved data handling capabilities.

Users prioritizing modern architectural efficiency and superior cache capacity should choose the Intel Core Ultra 5 245K for their system builds. Conversely, the Intel Core i5-6600K remains a viable option for specific use cases that rely heavily on the higher Max Turbo Power rating provided by that unit. Selecting between these two processors depends entirely on whether your workload demands the massive L2 Cache advantage of the newer model or the specific power profile of the older one.