Intel Core i5 9600KF 's Advantages
Higher specification of memory (DDR4-2666 vs DDR4-2400)
Larger memory bandwidth (41.6GB/s vs 37.5GB/s)
Larger L3 cache size (9MB vs 8MB)
Intel Core i3 9300 's Advantages
Integrated graphics card
Lower TDP (62W vs 95W)