At idle (i.e. during normal working or browsing) my system must be (perceptibly) silent. On an air cooled system this is dead easy to do, as you have PWM fans, motherboards that allow fans to be stopped under certain temperatures, semi-passive power supplies, and components that really don't output that much heat. Little more difficult on water purely as you have more fans and a pump.
Whilst gaming, silence isn't a must but I don't want it to be disruptive. Truth be told, my system can be a little loud to me as the graphics card fans spin up, however my environment is always extremely quiet no matter the time of day. It isn't too bad.
More annoying is the tonality of the noise rather than the amount of noise. Vibration, humming/droning and buzzing bother me far more than the sound of air moving around.
Whilst gaming, silence isn't a must but I don't want it to be disruptive. Truth be told, my system can be a little loud to me as the graphics card fans spin up, however my environment is always extremely quiet no matter the time of day. It isn't too bad.
More annoying is the tonality of the noise rather than the amount of noise. Vibration, humming/droning and buzzing bother me far more than the sound of air moving around.