The AMD Ryzen 9 5900X wins in 9 out of 14 comparable specs, with 1 tie. Its biggest advantage is L3 Cache (700% better).
Core i7-6700K wins in 4 specs (MSRP: 38% better).
Recommendation
Choose Ryzen 9 5900X if you want the best overall performance — especially l3 cache.
Choose Core i7-6700K if msrp matters more to you.
