Right now I'm imagining a few raised eyebrows and someone is going to say seriously, dude 80mm fans ? I might be mad, off my rocker, out of my tree and to be honest I agree with you, but the fact of the matter is I can't afford to buy a new case for this build (my file server come media server) and the only spare case I had for the build was a Cooler Master Praetorian that was big enough to manager 5 hard drives. It's come with a host of 80mm fans, and the majority of them are Delta's running at around 4,000 - 5,900 RPM - and my god are they loud, even if they do push a lot of air threes no way I can run this system making that kind of racket. It's fitted with 4 of the sods ! Back in the day when 80mm were what everyone was packing I seem to recall Akasa Ambers were the way to go but I suspect they are no longer made and I'm very out of touch on cooling these days - anyone got any suggestions ?