I'm going to be upgrading to a faster CPU soon as I want better performance in X-Plane 11 and my CPU chokes in large cities in that game with most settings maxed out and AI traffic disabled at 1920x1080. I was wondering if I should upgrade to an i7-7740x or and i7-7820x and of course an X299 based motherboard and DDR4-2666? I'm considering the 7820x. Is the all core turbo frequency of the 7820x really 4GHz like an article I read said it was because I would rather have 8 cores operating at 4 GHz than 4 cores operating at 4.3-4.5 GHz as long as the 7820x does not throttle when all 8 cores are running at 4 GHz. Also does anyone there know what the all core turbo frequency is on the 7740x?