The Intel Core Ultra 5 245K is the objective winner of this comparison, securing victory in eleven out of fourteen measured specifications. Its most significant technical advantage is its L2 cache, which is 1633% larger than that of the Intel Core i5-9600K. This substantial architectural improvement provides the newer processor with a clear lead in overall capability, establishing it as the superior choice for users prioritizing modern hardware specifications and expanded memory resources.

Users should select the Intel Core Ultra 5 245K if they require the benefits of a significantly larger L2 cache for their computing tasks. Conversely, the Intel Core i5-9600K remains a viable option for those who specifically prioritize its 40% advantage in Max Turbo Power. Choosing between these two components depends entirely on whether your workflow relies more heavily on the cache capacity of the newer model or the power profile of the older unit.