The Intel Core Ultra 7 265KF is the objective winner of this comparison, securing victories in eleven out of fourteen measured specifications. Its most significant technical advantage is its L2 cache, which is 2300% larger than that of the alternative. This substantial architectural lead highlights the superior processing capacity and data handling capabilities inherent in the newer hardware, establishing it as the clear leader across the majority of the evaluated performance metrics.

The Intel Core i5-10400F remains a viable option for budget-conscious users, as it holds a 57% advantage in MSRP. Those prioritizing initial acquisition costs should select this model. Conversely, users who require the advanced technical specifications and the massive L2 cache capacity provided by the Intel Core Ultra 7 265KF should choose the newer component. The decision rests entirely on whether one prioritizes the lower cost of the former or the superior cache architecture of the latter.