The Intel Core Ultra 9 285K is the objective winner of this comparison, securing victory in ten out of sixteen measured specifications. Its most significant technical advantage is its L2 cache, which offers a 321% improvement over the Intel Core i5-12600K. While the latter component remains competitive in four categories, the superior cache capacity of the Ultra 9 285K represents the most substantial performance-related gain identified in this analysis.

Users prioritizing maximum technical specifications and the largest L2 cache capacity should select the Intel Core Ultra 9 285K for their build. Conversely, the Intel Core i5-12600K is the better choice for budget-conscious buyers, as it holds a 51% advantage in MSRP. Choosing between these two processors depends on whether your primary objective is to maximize cache-heavy performance or to capitalize on the significant cost savings offered by the i5-12600K.