What motherboards are you guys using for your high end CPUs? I stuck with a standard Z790 Gigabyte board for my 13900k. The main selling points I found when I was looking was that more expensive boards usually supported higher memory frequencies / timings and provided extra headers and M.2 slots.

I've got my system running 6400MHZ DDR5 memory and by the looks of it, once you go over 7k or beyond the gaming performance seems negligible?

What actual tangible benefits are the 500/600/700 dollar boards bringing?