Intel Core i9 9940X 's Advantages
Lower TDP (165W vs 180W)
AMD Ryzen Threadripper 2920X 's Advantages
Higher specification of memory (DDR4-2933 vs DDR4-2666)
Larger memory bandwidth (87.62GB/s vs 85GB/s)
Higher base frequency (3.5GHz vs 3.3GHz)
Larger L3 cache size (32MB vs 20MB)