The Dark Power 12 is the most efficient power supply series be quiet! has ever built. Featuring an unrivaled efficiency of up to 94.9% resulting in an 80 PLUS® Titanium certification, and fully digital control of PFC and LLC+SR/12V for Dark Power Pro 12, leading to a better regulation and lower ripple noise for the Dark Power 12 models. This makes the Dark Power 12 series a paragon of efficiency and stability. Next to an unmatched efficient operation, the patented frameless fan concept with a Silent Wings fan guarantees an optimized cooling effect and a virtually inaudible operation. The overclocking key allows to manually switch between multi-rail and single-rail operation. All these features make the new Dark Power 12 series the most progressive power supply be quiet! has ever built.