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This particular power supply adopts a 140mm Pure Wings 3 fan rated 0.42A, DC12V and with a maximum rotational speed of 2,100rpm. The blade design of this fan is proprietary to be quiet! There are no strips of plastic across the blades to specifically direct the airflow. We noticed when testing that the fan spins for several minutes after the unit is turned off to help with component wear over time. This is a modified fan designed specifically for this application.
This FSP design is exceptionally clean inside, with superb soldering across the PCB (see images above). There are only a couple of heatsinks across the length of the board.
The topology of this unit is a half bridge LLC with synchronous rectification and DC/DC conversion and it features one single 12V rail. According to be quiet! literature this is the first power supply they have released to be certified with a Cybenetics Platinum efficiency rating. As I have been saying for some time, it is good to see more companies using this certification process as we go forward as the older 80 Plus ratings don't really mean much anymore due to outdated methodology.
I was a little disappointed to see ELITE (Chinsan) capacitors in this unit. I don't have a lot of long term experience with these capacitors as they are not often used in any units I have tested in the last 15 years. They are however a Chinese second tier capacitor – rated at a similar level to brands like Teapo, OST and Toshin Kogyo. I would have expected to see capacitors from a Tier one Japanese company such as Nichicon, Panasonic, Hitachi, Rubyon or Chemi Con in an expensive Platinum rated unit such as this.
The two primary stage capacitors are at least 105c rated @ 390uF 420V each for a total of 780uF.
