Intel Core i3 12100 Advantages
Higher base frequency (3.3GHz vs 2.0GHz)
Lower TDP (60W vs 65W)
Intel Core i9 13900 Advantages
Released 1 years late
Better graphics card performance
Higher specification of memory (5600 vs 4800)
Larger memory bandwidth (89.6GB/s vs 76.8GB/s)
Larger L3 cache size (36MB vs 12MB)