We saw how the 7740X and 7640X struggled in the applications tests and here we see much the same in our first gaming benchmark using Battlefield 1. The 7700K was 5% faster than the 7740X when looking at the minimum frame rate and that's a decent margin, much the same was seen when comparing the Core i5 CPUs.
Again this time when testing with Mafia III we see that the mainstream Core i7 and i5 CPUs provide the best results.
Hitman's performance was similar between platforms and the Kaby Lake-X and Kaby Lake CPUs really traded blows here.
The same is true for Ashes of the Singularity as performance was much the same on either platform.