The AMD Ryzen 5 7500F wins in 10 out of 14 comparable specs, with 3 ties. Its biggest advantage is L2 Cache (300% better).
Core i5-8400 wins in 1 spec (Max Turbo Power: 26% better).
Recommendation
Choose Ryzen 5 7500F if you want the best overall performance — especially l2 cache.
Choose Core i5-8400 if max turbo power matters more to you.
