Intel Core i5 7640X Advantages
Larger memory bandwidth (42.7GB/s vs 41.6GB/s)
Higher base frequency (4.0GHz vs 3.1GHz)
Intel Core i9 9900 Advantages
Released 1 years and 11 months late
Integrated graphics card
Larger L3 cache size (16MB vs 6MB)
Lower TDP (65W vs 112W)