Intel Core i5 7400 's Advantages
Integrated graphics card
Higher base frequency (3.0GHz vs 2.5GHz)
Intel Core i5 12400F 's Advantages
Released 5 years late
Higher specification of memory (4800 vs 2400)
Larger memory bandwidth (76.8GB/s vs 35.76GB/s)
Newer PCIe version (5.0 vs 3.0)
Larger L3 cache size (18MB vs 6MB)
More modern manufacturing process (10nm vs 14nm)