AMD Ryzen Threadripper 3990X 's Advantages
Larger memory bandwidth (95.37GB/s vs 51.2GB/s)
Newer PCIe version (4.0 vs 3.0)
Larger L3 cache size (128MB vs 8MB)
AMD Ryzen 3 5300G 's Advantages
Released 1 years and 3 months late
Integrated graphics card
Higher base frequency (4.0GHz vs 2.9GHz)
Lower TDP (65W vs 280W)