AMD Ryzen 5 3600 's Advantages
Newer PCIe version (4.0 vs 3.0)
Larger L3 cache size (32MB vs 8MB)
AMD Ryzen 3 5300G 's Advantages
Released 1 years and 9 months late
Integrated graphics card
Higher base frequency (4.0GHz vs 3.6GHz)
Lower TDP (45W vs 65W)