Just built a very similar spec case to yourself. Must say the Antec Fusion gets 10/10 for looks but I am very dissapointed with the noise level. Have a decent setup elsewhere in the house that is virtually silent to the extent you can only hear it when you are a foot or so away from it and then only if you really listen. This is on all the time as it is the server for my Squeezebox and has all my audio on it.
In comparison the Antec is like a tractor. Going to remove one of the two stock fans and replace the AMD fan that came with the CPU - I had a monster cooler liek yours but it wouldn't fir in so have just bought another 'silent' cooler. See if that makes much difference.
Other than that I've played around for a while with Vista And XP Media centre and have finally decided on a XP SP3 config with mediaportal (which I know need to sit down and fine tune). |