I dont understand what you are trying to say. In all freaking mobos, not just expensive ones, you can set your own power limits. So yes, you can set your 12700f at 165w pl2 if you want to. In ANY motherboard. I even had that feature on a 70 euros b460 pro 4 matx.So in that other thread that members (i forgot his name) 12900K pulling 165 watts at 5.4Ghz in SOTTR maks no difference to a CPU that supposed to be pulling no more than 125 watts sustained, is that what you're trying to tell me?
Again, expensive motherboards don't make any difference in performance. Unless of course your el cheapo mobo vrm throttles, but thats not gonna happen to a 150 euro b660, and certainly it aint gonna happen in games.