The AMD Ryzen 5 7500F is the objective winner of this comparison, securing victory in ten out of fourteen measured specifications. Its most significant advantage over the Intel Core i5-8400 is its L2 cache, which is 300% larger. This substantial architectural lead in cache capacity positions the AMD Ryzen 5 7500F as the superior choice for modern computing tasks that rely on efficient data handling and high-speed memory access.

Users prioritizing modern performance and cache-heavy workloads should select the AMD Ryzen 5 7500F for its clear technical dominance across the majority of measured categories. Conversely, the Intel Core i5-8400 remains a viable option for specific use cases where a 26% advantage in Max Turbo Power is preferred. Buyers should weigh the significant cache benefits of the newer processor against the power profile of the older model to determine the best fit for their specific system requirements.