Intel Core i5 10400H 's Advantages
Higher base frequency (2.6GHz vs 2.2GHz)
Lower TDP (45W vs 55W)
Intel Core i9 14900HX 's Advantages
Released 3 years and 9 months late
Better graphics card performance
Higher specification of memory (5600 vs 2933)
Larger memory bandwidth (89.6GB/s vs 45.8GB/s)
Newer PCIe version (5.0 vs 3.0)
Larger L3 cache size (36MB vs 8MB)
More modern manufacturing process (10nm vs 14nm)