Your profile has little to do with noise. Your db settings will have a big effect. This camera does well, even up to 12 db, even though I try not to go above 6 db.
If you are shooting in low light with no lighting, you are always going to have issues. You must light your subject appropriately for the best image possible.
Brent Dunn
Owner / Director / Editor
DunnRight Films
DunnRight Video.com
Video Marketing Toolbox.net
Sony EX-1,
Canon 5D Mark II
Canon 7D
Mac Pro Tower, Quad Core,
with Final Cut Studio
HP i7 Quad laptop
Adobe CS-5 Production Suite