The Intel Core Ultra 7 265 is the objective winner of this comparison, securing victory in twelve out of sixteen measured specifications. While the Intel Core i5-12600K maintains a notable lead in base clock speed, which is 54% higher than its counterpart, the Ultra 7 265 offers a more comprehensive technical profile. The most significant advantage for the newer processor is its L2 cache, which provides a 279% improvement over the older model.

Users prioritizing raw base clock frequency for specific legacy workloads should select the Intel Core i5-12600K. Conversely, the Intel Core Ultra 7 265 is the superior choice for those who require the substantial L2 cache advantage and the broader range of technical improvements found across the majority of the measured specifications. This makes the latter the more versatile option for modern computing demands where cache capacity is a primary factor in overall system efficiency.