AMD Ryzen 5 3600 's Advantages
Larger memory bandwidth (51.2GB/s vs 47.68GB/s)
Higher base frequency (3.6GHz vs 3.4GHz)
Lower TDP (65W vs 105W)
AMD Ryzen 7 5800X3D 's Advantages
Released 2 years and 8 months late
Higher specification of memory (DDR4-3200 vs DDR4-3200)
Larger L3 cache size (96MB vs 32MB)