Processing, materials and connections used are described in the expectable or frame. Using a power meter I could tell at partial and full load is a significant savings compared to my old standard power supply (~ 15 Euro). Many hours of operation at a power consumption of more than 300 watts is not a problem. The fan noise acts always homogeneous and is very quiet. I could also find no Spulenfiepen and no unpleasant odors.
I give mainly due to the good price-performance ratio, 5 stars.