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)
Intel Core i7 6800K 's Advantages
Larger memory bandwidth (76.8GB/s vs 41.6GB/s)
Higher base frequency (3.4GHz vs 2.1GHz)