The Intel Core i5-12600K is the objective winner of this comparison, securing victories in eight out of fourteen measured specifications. Its most significant advantage over the Intel Core i9-11900K is its L2 cache, which is 138% larger. This substantial improvement in cache capacity serves as the primary differentiator between the two processors, as the newer architecture consistently outperforms the older model across the majority of the evaluated technical categories.

Users prioritizing overall efficiency and modern architecture should choose the Intel Core i5-12600K for its superior cache performance. Conversely, the Intel Core i9-11900K remains a viable option for those specifically seeking the 8% boost clock advantage provided by its design. By weighing the significant cache capacity of the former against the higher clock speed of the latter, buyers can select the processor that best aligns with their specific technical requirements.