Grad schools likely do not know much detail about the course offerings, the degree requirements and average number of courses per semester in undergrad programs at other schools. They'll want to make sure that you had quantum for instance and that you did ok in the other major courses... but it might not be obvious by looking at your transcript and the cryptic course numbers whether you took an unusually heavy course load or had a bunch of optional electives... So if you went way above and beyond, but it's best to have your recommender(s) point this out in their letters so that it gets noticed. It absolutely will count in your favor. It's also something you could also mention in your SOP. In my SOP I mentioned that I took every physics class in the department, one grad class and was getting a math major.