Intel Core i7 7700K 's Advantages
Better graphics card performance
Higher base frequency (4.2GHz vs 3.6GHz)
Larger L3 cache size (8MB vs 6MB)
Intel Core i3 9100 's Advantages
Released 2 years and 3 months late
Higher specification of memory (2400 vs 2400)
Larger memory bandwidth (37.5GB/s vs 35.76GB/s)
Lower TDP (65W vs 91W)