Intel Core i7 6900K 's Advantages
Higher base frequency (3.2GHz vs 2.3GHz)
Larger L3 cache size (20MB vs 12MB)
Intel Core i3 12300T 's Advantages
Released 5 years and 8 months late
Integrated graphics card
Higher specification of memory (4800 vs 2133)
Newer PCIe version (5 vs 3.0)
More modern manufacturing process (10nm vs 14nm)
Lower TDP (35W vs 140W)