Intel Core i3 12100's Advantages
Released 3 years and 3 months late
Integrated graphics card
Higher specification of memory (DDR5-4800 vs DDR4-2666)
Newer PCIe version (5.0 vs 3.0)
More modern manufacturing process (10nm vs 14nm)
Lower TDP (60W vs 165W)
Intel Core i7 9800X's Advantages
Larger memory bandwidth (79.47GB/s vs 76.8GB/s)
Higher base frequency (3.8GHz vs 3.3GHz)
Larger L3 cache size (17MB vs 12MB)