Antec Low Noise Technology

This is one feature packed power supply that will appeal to everyone. Along with the blue leds it has two temp controlled fans. They will only spin faster when the temp gets hotter. What that means is this power supply is very quiet. It's so quiet you'd hear your cpu fan or any case fans before you'd hear the fans on this power supply.

One feature the TrueBlue480 has that no other power supply has are connectors that are for fans only. The TrueBlue includes two "fan only" connectors. What this does to any fans connected to the "fan only" connectors is make them temp controlled. They will spin slower in idle or normal net surfing, but once the system temp gets higher the fans spin faster. Once again Antec is thinking of "Quiet". Usually when system temps get higher we are doing something noisy anyway like playing games so any fan sound will not bother us.

The "fan only" connectors are meant for standard fans only, and not temp controlled fans. From Antec:

"The TruePower Fan Only connectors are designed to power standard fans only. Attaching thermally-controlled fans to these connectors will likely result in unpredictable and undesired behavior. Thermally-controlled fans should only be connected to the standard 4-pin Peripheral Power Connectors."

"Please do not connect more than three external fans to the Fan Only connectors in any combination. For maximum cooling you may choose to connect the case fans to the regular 4-pin peripheral connectors, but in this fashion noise will not be reduced."

Like it says on the box, "The New Standard in Silence.."

"Antec Low Noise Technology substantially reduces overall system noise. Using an advanced temperature response system the power supply fans run at the lowest speed appropriate to load and conditions. This system achieves optimum balance between necessary cooling and noise reduction. Dedicated Fan Only connectors allow TruePower power supplies to control and monitor the speed of up to three case fans. The connected case fans will then operate at lower speeds until more cooling is needed."