Intel Core i7 9800X 's Advantages
Larger memory bandwidth (79.47GB/s vs 76.8GB/s)
Higher base frequency (3.8GHz vs 2.3GHz)
Larger L3 cache size (17MB vs 12MB)
Intel Core i3 12300T 's Advantages
Released 3 years and 3 months late
Integrated graphics card
Higher specification of memory (4800 vs 2666)
Newer PCIe version (5 vs 3.0)
More modern manufacturing process (10nm vs 14nm)
Lower TDP (35W vs 165W)