Intel Core i9 7900X's Advantages
Higher base frequency (3.3GHz vs 3.0GHz)
Lower TDP (140W vs 250W)
AMD Ryzen Threadripper 2990WX's Advantages
Released 1 years and 3 months late
Higher specification of memory (DDR4-2933 vs DDR4-2666)
Larger memory bandwidth (87.42GB/s vs 79.47GB/s)
Larger L3 cache size (64MB vs 14MB)