Intel Core i5 9400H 's Advantages
Integrated graphics card
Higher base frequency (2.5GHz vs 2.2GHz)
Intel Core 5 210H 's Advantages
Released 5 years and 8 months late
Higher specification of memory (5200 vs 2666)
Larger memory bandwidth (83.2GB/s vs 41.8GB/s)
Newer PCIe version (5 vs 3.0)
Larger L3 cache size (12MB vs 8MB)
More modern manufacturing process (10nm vs 14nm)