I went out and purchased the Sonata yesterday. I wouldn't go nuts about the
quiet features of the case itself. You could probably make due with buying
a quiet PSU and under-volting fans to get the same sound levels. However,
what really sets apart this case is the quality (except for the front door).
It's very solid and even the sides are made of strong metal. I doubt
they'll bend from use like a generic case. The bays are beautifully
designed. It was worth the price (since the PSU would probably cost about
$60 by itself).
As for making my system quiet, that required a little more tweaking. I have
2 noisy little fans in my system: one on my mobo and one on my Radeon 9600
Pro. The one on the mobo I connected to the "Fan Only" plug on the PSU and
it is now VERY quiet. The one on the Radeon I removed completely (leaving
the heatsink) and placed a temp. throttled 80mm fan inside the case blowing
air at it. For the heatsink, I'm using an Arctic Cooling Copper Silent 2
TC. It is quieter than most but there's still a lot of air turbulance so I
undervolted that too by connecting it to the Fan Only plug as well. Now it
is practically silent. With all these modifications, the AMD Athlon XP
1800+ CPU only runs 2 degrees hotter (52Celcius) than before undervolting
the fans. I played a 3dfx game for an hour and everything was stable and
the temp. didn't get higher than 53. My Seagate hard-drive is dampened by
the grommets on the case and I can't hear it at all. I also taped some
packing foam (the grey kind) behind the Antec drill-holes on the side. That
dampens the sound and catches some dust without stopping air flow.
How quiet is it? All you can hear is the quiet sound of the fans at the
back. There's practically no clicking or high-pitched sounds (from those
damn tiny fans). When the fridge turns on in the adjoining room, it is much
louder across the room at my desk then my PC is at the desk.
I'm going to enjoy it like this for now but in the future I'll put a VGA
heatsink on my (a7V266-E)northbridge to remove that noisy fan altogether.
Then I think that will be as quiet as it will get without water-cooling or
something