The Intel Core i5-14500 is the objective winner of this comparison, securing victories in nine out of fourteen measured specifications. Its most significant technical advantage is the L2 Cache, which is 1333% larger than that of the alternative. While the Intel Core i5-9400F maintains a 58% advantage in Max Turbo Power, the superior cache capacity of the newer processor makes it the more robust option across the majority of the evaluated metrics.

Users prioritizing modern architecture and increased cache capacity should select the Intel Core i5-14500 for their build. Conversely, the Intel Core i5-9400F remains the appropriate choice for those specifically seeking the advantage provided by its Max Turbo Power rating. By focusing on these distinct technical strengths, buyers can align their hardware selection with the specific performance characteristics that best suit their individual computing requirements.