AMD Ryzen 9 3900X 's Advantages
Higher base frequency (3.8GHz vs 3.2GHz)
Larger L3 cache size (64MB vs 12MB)
More modern manufacturing process (7nm vs 10nm)
Intel Core i3 12100E 's Advantages
Released 2 years and 6 months late
Integrated graphics card
Higher specification of memory (4800 vs 3200)
Larger memory bandwidth (76.8GB/s vs 47.68GB/s)
Newer PCIe version (5.0 vs 4.0)
Lower TDP (60W vs 105W)