The Intel Core Ultra 7 265F is the objective winner of this comparison, securing victory in ten out of fourteen measured specifications. Its most impactful advantage is a 2300% larger L2 cache compared to the Intel Core i5-10400F, which significantly enhances its technical architecture. While the older processor maintains a lead in three categories, the newer model dominates the majority of the evaluated fields, establishing itself as the superior component based on the provided data.

Users prioritizing maximum technical capability and the substantial L2 cache advantage should select the Intel Core Ultra 7 265F for their build. Conversely, the Intel Core i5-10400F remains a viable option for budget-conscious consumers, as it holds a 57% advantage in MSRP. Choosing between these two processors depends on whether the buyer values the significant cache capacity and overall spec superiority of the newer model or the cost-efficiency offered by the older unit.