In Win CB-1050W, 1050W, Material SECC, Cable Management Fully Modular, Active PFC ( >0.9), Efficiency 80 PLUS Platinum, MTBF (Hours) >100,000 hrs, AC Input 100 – 240Vac. 50-60Hz, 135mm Double Ball Bearing Fan, 50% Load Typical Fan Noise(dBA) < 25dBA. The CB Series delivers up to 92% conversion efficiency. This power supply with a new circuit design is able to maintain consistent conversion efficiency even under low loading conditions.