This power supply is manufactured by Seasonic. The guarantees already for quality. It is more expensive than the comparable Seasonic, but also has other ports (fan) and fan. On the internet is an opinion that has developed the board be quiet and can produce as OEM for Seasonic. The power supply is quiet, has an extensive range of cables, and I've replaced it against my little Brüllwürfel Enermax 550-Watts. Resting in a box !!! Long-term experience is not yet available, since only 4 hours in operation.