AMD Ryzen 3 4100 's Advantages
Lower TDP (65W vs 120W)
AMD Ryzen 9 7900X3D 's Advantages
Released 9 months late
Integrated graphics card
Higher specification of memory (DDR5-5200 vs DDR4-3200)
Newer PCIe version (5.0 vs 3)
Higher base frequency (4.4GHz vs 3.8GHz)
Larger L3 cache size (128MB vs 4MB)