The Intel Core Ultra 5 250K Plus is the objective winner of this comparison, securing victories in eleven out of fourteen measured specifications. Its most significant technical advantage is the L2 cache, which is 650% larger than that found in the Intel Core i9-11900K. This substantial increase in cache capacity represents the primary performance differentiator between the two processors, establishing the newer model as the superior option across the vast majority of the evaluated hardware metrics.

Users prioritizing modern architecture and the significant L2 cache advantage should select the Intel Core Ultra 5 250K Plus for their build. Conversely, the Intel Core i9-11900K remains an option only for those who do not require the technical improvements or the expanded cache capacity offered by the newer component. Given that the latter failed to win any individual specification categories, the former is the clear choice for users seeking the most capable hardware configuration.