Intel Core i5 8400H 's Advantages
Higher base frequency (2.5GHz vs 2.4GHz)
Lower TDP (45W vs 45W)
Intel Core i5 14450HX 's Advantages
Released 5 years and 9 months late
Better graphics card performance
Higher specification of memory (DDR5-5600 vs DDR4-2666)
Larger memory bandwidth (89.6GB/s vs 41.8GB/s)
Newer PCIe version (5.0 vs 3.0)
Larger L3 cache size (20MB vs 8MB)
More modern manufacturing process (10nm vs 14nm)