AMD Ryzen 7 1800X 's Advantages
Larger L3 cache size (16MB vs 4MB)
AMD Ryzen 3 4100 's Advantages
Released 5 years and 1 months late
Higher specification of memory (DDR4-3200 vs DDR4-2666)
Newer PCIe version (3 vs 3.0)
Higher base frequency (3.8GHz vs 3.6GHz)
More modern manufacturing process (7nm vs 14nm)
Lower TDP (65W vs 95W)