Intel Core i7 8700 's Advantages
Integrated graphics card
Higher base frequency (3.2GHz vs 3.0GHz)
Lower TDP (65W vs 250W)
AMD Ryzen Threadripper 2990WX 's Advantages
Released 10 months late
Higher specification of memory (2933 vs 2666)
Larger memory bandwidth (87.42GB/s vs 41.6GB/s)
Larger L3 cache size (64MB vs 12MB)
More modern manufacturing process (12nm vs 14nm)