Intel Core i5 6400 's Advantages
Larger L3 cache size (6MB vs 3MB)
Intel Core i3 7100 's Advantages
Released 1 years and 4 months late
Higher specification of memory (DDR4-400 vs DDR4-2133)
Larger memory bandwidth (35.76GB/s vs 34.1GB/s)
Higher base frequency (3.9GHz vs 2.7GHz)
Lower TDP (51W vs 65W)