Intel Core i3 9300 's Advantages
Higher base frequency (3.7GHz vs 3.6GHz)
Larger L3 cache size (8MB vs 6MB)
Lower TDP (62W vs 65W)
Intel Core i3 10100 's Advantages
Released 1 years and 1 months late
Higher specification of memory (DDR4-2666 vs DDR4-2400)
Larger memory bandwidth (41.6GB/s vs 37.5GB/s)