Intel Core i5 6400 's Advantages
Lower TDP (65W vs 91W)
Intel Core i3 9350K 's Advantages
Released 3 years and 7 months late
Higher specification of memory (2400 vs 2133)
Larger memory bandwidth (37.5GB/s vs 34.1GB/s)
Higher base frequency (4.0GHz vs 2.7GHz)
Larger L3 cache size (8MB vs 6MB)