Intel Core i9 7920X 's Advantages
Larger memory bandwidth (85GB/s vs 76.8GB/s)
Larger L3 cache size (17MB vs 12MB)
Intel Core i3 12300 's Advantages
Released 4 years and 5 months late
Integrated graphics card
Higher specification of memory (4800 vs 2666)
Newer PCIe version (5 vs 3.0)
Higher base frequency (3.5GHz vs 2.9GHz)
More modern manufacturing process (10nm vs 14nm)
Lower TDP (60W vs 140W)