Intel Core i7 6800K 's Advantages
Larger memory bandwidth (76.8GB/s vs 41.6GB/s)
Higher base frequency (3.4GHz vs 2.1GHz)
Intel Core i9 9900T 's Advantages
Released 2 years and 11 months late
Integrated graphics card
Higher specification of memory (2666 vs 2133)
Larger L3 cache size (16MB vs 15MB)
Lower TDP (35W vs 140W)