Intel Core i3 8350K 's Advantages
Integrated graphics card
Higher base frequency (4.0GHz vs 2.9GHz)
Lower TDP (91W vs 280W)
AMD Ryzen Threadripper 3990X 's Advantages
Released 2 years and 3 months late
Higher specification of memory (DDR4-3200 vs DDR4-2400)
Larger memory bandwidth (95.37GB/s vs 37.5GB/s)
Newer PCIe version (4.0 vs 3.0)
Larger L3 cache size (128MB vs 8MB)