Intel Core i5 7400 's Advantages
Better graphics card performance
Intel Core i3 9300T 's Advantages
Released 2 years and 3 months late
Higher specification of memory (2400 vs 2400)
Larger memory bandwidth (37.5GB/s vs 35.76GB/s)
Higher base frequency (3.2GHz vs 3.0GHz)
Larger L3 cache size (8MB vs 6MB)
Lower TDP (35W vs 65W)