The Intel Core Ultra 7 265KF is the objective winner of this comparison, securing victories in twelve of the fourteen evaluated specifications. Its most significant technical advantage is the L2 cache, which is 800% better than that of 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 measured metrics.

Users prioritizing modern architecture and the significant L2 cache improvement should choose the Intel Core Ultra 7 265KF for their build. Conversely, the Intel Core i9-11900K remains an option only for those who do not require the technical advancements or the expanded cache capacity offered by the newer component. Given that the latter failed to win any of the fourteen categories, the former is the clear recommendation for anyone seeking the most capable hardware.