Intel Core i3 12300 's Advantages
Higher base frequency (3.5GHz vs 2.5GHz)
Lower TDP (60W vs 65W)
Intel Core i5 14400 's Advantages
Released 2 years late
Higher specification of memory (4800 vs 4800)
Newer PCIe version (5.0 vs 5)
Larger L3 cache size (20MB vs 12MB)