Intel Core i5 9400T 's Advantages
Integrated graphics card
Lower TDP (35W vs 45W)
Intel Core i5 14401TE 's Advantages
Released 5 years and 3 months late
Higher specification of memory (4800 vs 2666)
Larger memory bandwidth (76.8GB/s vs 41.6GB/s)
Newer PCIe version (5 vs 3.0)
Higher base frequency (2GHz vs 1.8GHz)
Larger L3 cache size (20MB vs 9MB)
More modern manufacturing process (10nm vs 14nm)