Intel Core i7 8086K 's Advantages
Higher specification of memory (2666 vs 2400)
Larger memory bandwidth (41.6GB/s vs 37.5GB/s)
Higher base frequency (4.0GHz vs 3.7GHz)
Larger L3 cache size (12MB vs 8MB)
Intel Core i3 9300 's Advantages
Released 10 months late
Lower TDP (62W vs 95W)