Intel Core i5 8279U 's Advantages
Higher base frequency (2.4GHz vs 2.1GHz)
Lower TDP (28W vs 45W)
Intel Core i5 13420H 's Advantages
Released 3 years and 8 months late
Better graphics card performance
Higher specification of memory (5200 vs 2400)
Larger memory bandwidth (76.8GB/s vs 37.5GB/s)
Newer PCIe version (5.0 vs 3.0)
Larger L3 cache size (12MB vs 6MB)
More modern manufacturing process (10nm vs 14nm)