The AMD Ryzen 7 7800X3D wins in 10 out of 14 comparable specs, with 1 tie. Its biggest advantage is L3 Cache (700% better).
Core i7-8700K wins in 3 specs (Max Turbo Power: 41% better).
Recommendation
Choose Ryzen 7 7800X3D if you want the best overall performance — especially l3 cache.
Choose Core i7-8700K if max turbo power matters more to you.
