http://sanfrancisco.cbslocal.com/2014/04/17/san-francisco-49ers-new-levis-stadium-designed-to-rival-seahawks-stadium-for-crowd-noise-super-bowl-l-santa-clara-acoustic-guiness-record-12th-man/
EDIT: 10/10/14: The architecture does in fact allow Levi's to get louder than Candlestick, though not as loud as Seattle or KC. However, currently that is moot because our fans aren't getting loud enough in general (except when we are on offense in the 4th quarter )
[ Edited by TheRambler on Oct 10, 2014 at 12:39 PM ]