Intel Core i5 8279U 's Advantages
Integrated graphics card
Lower TDP (28W vs 45W)
Intel Core i5 9300HF 's Advantages
Higher specification of memory (DDR4-2666 vs DDR4-2400)
Larger memory bandwidth (41.8GB/s vs 37.5GB/s)
Larger L3 cache size (8MB vs 6MB)