Intel Core i5 12400 's Advantages
Lower TDP (65W vs 125W)
Intel Core i9 13900K 's Advantages
Released 8 months late
Better graphics card performance
Higher specification of memory (5600 vs 4800)
Larger memory bandwidth (89.6GB/s vs 76.8GB/s)
Higher base frequency (3.0GHz vs 2.5GHz)
Larger L3 cache size (36MB vs 18MB)