Intel Core i9 9900X 's Advantages
Higher specification of memory (2666 vs 2400)
Larger memory bandwidth (85GB/s vs 37.5GB/s)
Larger L3 cache size (20MB vs 8MB)
Intel Core i3 9350K 's Advantages
Released 6 months late
Integrated graphics card
Higher base frequency (4.0GHz vs 3.5GHz)
Lower TDP (91W vs 165W)