Intel Core i5 8300H's Advantages
Higher base frequency (2.3GHz vs 2.1GHz)
Intel Core i5 13420H's Advantages
Released 4 years and 9 months late
Better graphics card performance
Higher specification of memory (DDR5-5200 vs DDR4-2666)
Larger memory bandwidth (76.8GB/s vs 41.8GB/s)
Newer PCIe version (5.0 vs 3.0)
Larger L3 cache size (12MB vs 8MB)
More modern manufacturing process (10nm vs 14nm)
Lower TDP (35W vs 45W)