The Intel Core i5-11400F wins in 9 out of 14 comparable specs, with 3 ties. Its biggest advantage is Threads (100% better).
Core i5-8600K wins in 2 specs (Base Clock: 38% better).
Recommendation
Choose Core i5-11400F if you want the best overall performance — especially threads.
Choose Core i5-8600K if base clock matters more to you.
