Intel Core i5 7400 's Advantages
Released 3 years late
Integrated graphics card
Higher specification of memory (2400 vs 1600)
Higher base frequency (3.0GHz vs 2.6GHz)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (65W vs 80W)
Pentium 1403 V2 's Advantages
Newer PCIe version (3 vs 3.0)