Intel Core i5 8265U 's Advantages
Lower TDP (15W vs 45W)
Intel Core i9 8950HK 's Advantages
Higher specification of memory (2666 vs 2400)
Larger memory bandwidth (41.8GB/s vs 37.5GB/s)
Higher base frequency (2.9GHz vs 1.6GHz)
Larger L3 cache size (12MB vs 6MB)