What can I do to quiet my system?

[Thawk]

I beleve that I have sunon fans in my main system. It is the noisiest system that I have every had. How can I quiet it? Are there quieter fans or are their other options?

 

[elbirth]

I'm sure there are probably quieter fans, though I'm not entirely sure how the air the push compares to louder fans... most likely, some won't cool as well.
You can also get sound dampening pads to go inside the case to absorb some noise.

 

[karmasalad]

You can try replacing them with low quiet fans like the ever popular Panaflo L1As or some NMBs.

You can also try undervolting your fans so that they run slower and create less noise (but also pushing less air, of course). You can do this yourself using the 7-volt mod, or if you don't like messing around with the wires like me, just go and get yourself some fan controller like the Zalman FanMate (first item listed) or to control mutiple fans, this.

You should also check out SVC.com and their wide selection of fan speed controllers.