The Intel Core Ultra 5 250K Plus is the objective winner of this comparison, securing victory in ten of the sixteen evaluated categories. While the Intel Core i9-12900K maintains a significant lead in thread count, offering 33% more threads, the Intel Core Ultra 5 250K Plus provides a substantial technical advantage in memory architecture. Specifically, the Intel Core Ultra 5 250K Plus features an L2 cache that is 114% larger than that of its competitor.

Users prioritizing multi-threaded workloads should select the Intel Core i9-12900K to leverage its superior thread count. Conversely, those who benefit from enhanced cache performance should choose the Intel Core Ultra 5 250K Plus. Given that the latter component outperformed the former in the majority of measured specifications, it serves as the more modern and well-rounded option for general computing tasks that rely on the architectural improvements provided by its expanded L2 cache.