Intel Core i9 7920X 's Advantages
Larger memory bandwidth (85GB/s vs 41.6GB/s)
Higher base frequency (2.9GHz vs 2.1GHz)
Larger L3 cache size (17MB vs 16MB)
Intel Core i9 9900T 's Advantages
Released 1 years and 8 months late
Integrated graphics card
Lower TDP (35W vs 140W)