Intel Core i5 9400F 's Advantages
Lower TDP (65W vs 280W)
AMD Ryzen Threadripper 3960X 's Advantages
Released 10 months late
Higher specification of memory (3200 vs 2666)
Larger memory bandwidth (95.37GB/s vs 41.6GB/s)
Newer PCIe version (4.0 vs 3.0)
Higher base frequency (3.8GHz vs 2.9GHz)
Larger L3 cache size (128MB vs 9MB)
More modern manufacturing process (7nm vs 14nm)