[mythtv-users] OT: Quiet hardware for gigabit firewall

[David Brodbeck]

I'm posting this here because you folks have lots of experience with  
quiet but powerful boxes.  Please forgive the off-topic excursion.

I need to build a firewall to sit between two gigabit ethernet  
networks.  It's going to be physically located in a classroom /  
computer lab, so it also needs to be quiet.  Can anyone suggest some  
hardware that would give good performance in this application without  
a lot of noise?  Gigabit is pretty demanding of the bus architecture  
and CPU.  (One rack-mount server I have uses 40% of its 2 GHz CPU  
just for interrupt handling, when it's shipping packets between its  
two gigabit interfaces at full clip.)