>40db is kinda loud for me.
First rig(I called it the Black Beast, friends called it the Vornado):
CPU 60mm Black label Delta
Case had 3x 80mm fans and 1x 92mm Delta
Overall not that quiet but got used to it.
Current rig(I call it the Silver Monkey, friends call it the Turbine):
CPU same 92mm Delta from the first case
1x 34db 120mm intake, 1x ~45db 120mm outtake
Both systems were/are on 24hrs a day and within 7ft of where I sleep. I've gotten so used to them that I can't sleep when they are off and if one of the temp controlled fans changes speeds I'll wake up. Weird.
