Intel Core i9 9920X 's Advantages
Released 1 years and 5 months late
Higher specification of memory (DDR4-2666 vs DDR4-2400)
Larger memory bandwidth (85GB/s vs 79.47GB/s)
Larger L3 cache size (19MB vs 8MB)
Intel Core i7 7800X 's Advantages
Lower TDP (140W vs 165W)