I dunno, meself. My aluminium Lian Li PC61 sure is noiser, far noiser than this steel & plastic Antec 900. Or is it the four 80mm Vantec and Pabst fans?
Hmm, aluminium's a softer metal than steel so wouldn't a steel case resonate more?
Got me thinking now.....
I think case design may have more to do with noise than materials used but I honestly don't know.
I guess the material is definitely a factor when producing db's though.
Well, what got me thinking was partly trying to overcome a minor disappointment.
After aaaaaaaages umming and ahhhhing over wether I liked a case or not I finally decided I quite like it.