[Khledar]

Yeah the quiet thing can be a bit of an ongoing saga liek Stash mentioned.

Once you get those noisy CPU/Northbridge/GPU fans out of there you start to find out that gee that PSU is loud, the optical drives really whirr, and those HDD's make a racket. All things to watch out for, some wee rubber washer type things can help with the HDD, you might need to mod your cage or a 3-5" bracket to get the washers to fir right but, it might be worth it.

There are also solutions which try to deaden the sound escaping the case, different types of paneling you can put in your case, I personally don't like most of those solutions as I find they can add alot of weight, decrease inside case size or increase heat, etc.

One big tip on fans is, bigger = quieter. I have a couple 120mm Panaflo's (86oddCFM) at 12v they are normalish noise for a fan, not a scremer, but not a real quiet one either. At 7v they are pretty quiet and still push quite a bit of air, and for a nice cool breeze and near silence 5v still gets the job done.