The Intel Core Ultra 5 245K 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 1633% larger than that of the Intel Core i5-10400F. This substantial architectural improvement positions the newer processor as the superior option for users prioritizing modern hardware capabilities and increased cache capacity for their computing tasks.

The Intel Core Ultra 5 245K is the ideal choice for users who require the latest technical specifications and the massive cache advantage it provides. Conversely, the Intel Core i5-10400F remains a viable alternative for budget-conscious buyers, as it holds a 49% advantage in MSRP. Those who prioritize lower initial costs over the advanced performance features found in the newer model should select the older processor for their build.