At the time Noctua announced its redux fans and accessory kits, they also introduced a series of industrial ?Protected Performance Cooling? fans. These are ?ruggedised high-speed versions? of two of their most promising fans ? the 120mm NF-F12 and the 140mm NF-A14. More than merely ruggedized and sped-up, these fans have undergone a change to charcoal black impellers and frames. And in keeping with the industrial nature of these fans, they have gone from four-magnet motors to six magnets apiece. As a result, these fans draw very little current for all their push, so they should suit industrial applications, where current draw figures into the total cost of ownership. If these improvements just so happen to make these fans perfect for mounting on radiators, so much the better.