Intel Core i9 8950HK 's Advantages
Higher base frequency (2.9GHz vs 2.6GHz)
Larger L3 cache size (12MB vs 8MB)
Intel Core i5 10400H 's Advantages
Released 2 years late
Higher specification of memory (DDR4-2933 vs DDR4-2666)
Larger memory bandwidth (45.8GB/s vs 41.8GB/s)