The AMD Ryzen 9 9900X wins in 8 out of 14 comparable specs, with 3 ties. Its biggest advantage is L3 Cache (220% better).
Core i5-14400 wins in 3 specs (MSRP: 56% better).
Recommendation
Choose Ryzen 9 9900X if you want the best overall performance — especially l3 cache.
Choose Core i5-14400 if msrp matters more to you.
