I've been to only one game up north, when LSU played at Notre Dame. The place was as quiet as a crowd in a church, except for the LSU people.
I'll put LSU's Death Valley up against ANY stadium in the country and it is AS LOUD or if not louder than any of them, including The Swamp or the Rocky Top folks.
The Big House and Penn State's place don't hold a candle to any of the SEC stadiums, and they pack in on average 10,000 to 15,000 more fans.
Chalk