Intel Core i9 9920X's Advantages
Higher specification of memory (DDR4-2666 vs DDR4-2400)
Larger memory bandwidth (85GB/s vs 37.5GB/s)
Higher base frequency (3.5GHz vs 3.2GHz)
Larger L3 cache size (19MB vs 8MB)
Intel Core i3 9300T's Advantages
Released 6 months late
Integrated graphics card
Lower TDP (35W vs 165W)