Was at the game last night and I gotta say that it was the "best stadium experience" I have ever experienced. That place was absolutely off the charts in terms of loudness. The decibel meter was at 115 on a couple of different occasions. It pains me to say it, but it totally blows the doors off any game I have attended at ND as a student (six years as an undergrad and 2 as a graduate student) or alum (save for the '93 FSU Game). Gotta give the Clemson faithful their props. No one left the stadium until the game ended and everyone was extremely accommodating.
Highly recommend that you get to a game there should the opportunity arise again.