Intel Core i9 9940X 's Advantages
Lower TDP (165W vs 280W)
AMD Ryzen Threadripper Pro 3955WX 's Advantages
Released 1 years and 9 months late
Higher specification of memory (DDR4-3200 vs DDR4-2666)
Larger memory bandwidth (204.8GB/s vs 85GB/s)
Newer PCIe version (4.0 vs 3.0)
Higher base frequency (3.9GHz vs 3.3GHz)
Larger L3 cache size (64MB vs 20MB)