Intel Core i9 9880H 's Advantages
Lower TDP (45W vs 45W)
Intel Core i5 14450HX 's Advantages
Released 4 years and 9 months late
Better graphics card performance
Higher specification of memory (DDR5-5600 vs DDR4-2666)
Larger memory bandwidth (89.6GB/s vs 41.8GB/s)
Newer PCIe version (5.0 vs 3.0)
Higher base frequency (2.4GHz vs 2.3GHz)
Larger L3 cache size (20MB vs 16MB)
More modern manufacturing process (10nm vs 14nm)