Intel Core i9 9880H 's Advantages
Released 1 years late
Higher specification of memory (DDR4-2666 vs DDR4-2400)
Larger memory bandwidth (41.8GB/s vs 37.5GB/s)
Larger L3 cache size (16MB vs 6MB)
Intel Core i5 8259U 's Advantages
Better graphics card performance
Lower TDP (28W vs 45W)