The Intel Core Ultra 5 245K is the objective winner of this comparison, securing victory in ten out of fourteen measured specifications. While the Intel Core i9-11900K maintains a lead in thread count, offering a 14% advantage in that specific area, the newer model dominates in memory architecture. The most impactful advantage belongs to the Intel Core Ultra 5 245K, which provides a 550% improvement in L2 cache capacity compared to its predecessor.

Users prioritizing raw thread count for specific multi-threaded workloads should select the Intel Core i9-11900K. Conversely, the Intel Core Ultra 5 245K is the superior choice for those who benefit from the significantly larger L2 cache. By choosing the latter, buyers gain a component that outperforms the former across the vast majority of tracked technical specifications, making it the more versatile option for modern computing requirements.