In pure gaming scenarios, the stock 2700X often lags even the 26 month old 4c/8t spec stock 7700K (barely, by 1-2 fps) when both are given a 2080Ti GPU, and, both are some 35% down in average frames/sec compared to a 9900K...; more of an issue to consider when folks are choosing a CPU and GPU for 144 Hz refresh monitors, it would seem. NOTE: IN pure gaming...once streaming is thrown into the mix, Ryzen 2700X leaps ahead of any 4c cpu, and, only falls victim to 8600K and above...)
View: https://www.youtube.com/watch?v=3rOVfeujof4
(Granted, there would much less of a frame rate disparity given GPUs in the GTX1060/RX580 class, of course, where it was shown that even the i5-7400 would 99% saturate a GTX1060 in reviews 25 months ago.....)
NOTE: NOT advocating selecting a 7700K, but, this video shows the gaming performance of a huge variety of CPUs when using a great GPU, so I use this link once or twice a day lately when discussing gaming performance, and, often when folks say Ryzen eqauls Intel at 1440p; it does not.