I have a question: I know some devices to speedrun Mario is a bit slower is a Famicom classic one of them I tried to find the answer on the internet but I can't find any? , and I heard that the framerate between the NES classic and a Famicom classic is different?, I don't know if they are

hi im new at speedrunning not the term but the community do anyone know any good free pc game or cheap game to speedrun