Intel Core i3 7100 's Advantages
Integrated graphics card
Higher specification of memory (DDR4-400 vs DDR4-2666)
Higher base frequency (3.9GHz vs 3.5GHz)
Lower TDP (51W vs 165W)
Intel Core i9 9920X 's Advantages
Released 1 years and 9 months late
Larger memory bandwidth (85GB/s vs 35.76GB/s)
Larger L3 cache size (19MB vs 3MB)