As you can see from the graph, this power supply barely even budged from its idle measurements at load. This can be attributed to only pulling 450W from the mains (if it runs at 80% efficiency that means the components pulled around 360W). The slave PC power supplies pulled around 100W max.
The rails were exceptional, all within ATX specification although if I was being critical then the 12v rail is a little higher than average.
While the rails are very very good, the noise output isn’t. Thankfully, unlike other power supplies there wasn’t the annoying whine when 3D applications are started (i.e. increase in required power) but the 13.5cm fan won’t be your ears best friend. The sound of the air that it moves isn’t the problem, but the motor its makes the noise albeit quiet, it’s different from your other fans and sticks out in a working system.