"Antec advertises the TruePower line of power supplies as a the standard for silence and performance and they have succeeded! Not only is this TrueBlue480 quiet and a great performer it also will add to the esthetics of your system with the blue led lights which emit a soft blue glow from the fan enclosures. This power supply is virtually silent and you will have to place your ears close to it to hear it. Then considering the two "fan only" connectors you can make other noisy fans in your case silent too. And what can be said about the dedicated output circuitry for each voltage output. ALL power supplies SHOULD have this."