Since Seasonic but qualitatively else plays in the first division and for FULL! Modular power supplies are few alternatives, I dared again and must say: TOP!
Absolute silence ... You do hear only a very slight chirping when you put your ear directly to the power supply ... from ~ 10cm distance inaudible! The fan also starts up very rarely.
Consumption in my system: IDLE: 80-130W full load: 350-400W