The AMD Ryzen 9 7950X3D wins in 8 out of 14 comparable specs, with 3 ties. Its biggest advantage is L3 Cache (288% better).
Core i7-14700KF wins in 3 specs (L2 Cache: 75% better).
Recommendation
Choose Ryzen 9 7950X3D if you want the best overall performance — especially l3 cache.
Choose Core i7-14700KF if l2 cache matters more to you.
