I don't have first hand knowledge yet, my Leadtek arrives tomorrow. :-D Even then though, I won't have another 4400 to compare it to. Here is what I read about the cards (4600 versions) at tomshardware.com. Firingsquad.com did a review on the Leadtek, but they did not mention noise (they actually bolted a 3rd 60mm fan on the back of the card on top of the backside passive HS).
Leadtek
"Thankfully, this massive cooling solution isn't overly noisy, although it is far from quiet. Still, it makes a lot less noise than Creative's 'blow-drier.' "
Creative (Please note that MSI builds the cards for Creative, so they are basically the same card)
"While it is quite a visual treat and does an excellent job, it is very loud and its sound bears resemblance to that of a blow-drier for your hair. Not exactly something you'd want around you when you're trying to work. Creative/ MSI should rethink their choice of components here and find an alternative. After all, the large heatsink wouldn't even require such a high-speed fan to be effective. "