Intel Core i9 9880H 's Advantages
Higher specification of memory (2666 vs 2400)
Larger memory bandwidth (41.8GB/s vs 37.5GB/s)
Larger L3 cache size (16MB vs 6MB)
Intel Core i5 8279U 's Advantages
Better graphics card performance
Higher base frequency (2.4GHz vs 2.3GHz)
Lower TDP (28W vs 45W)