The be quiet! Dark Power 12 850W offers 80 PLUS® Titanium efficiency and a virtually inaudible frameless fan concept for flawless cooling. 80 PLUS Titanium efficiency (up to 95.6 ) Patented frameless Silent Wings fan for virtually inaudible operation Revolutionary full-mesh PSU front with redesigned funnel shape air inlet upholds the high air circulation abilities Overclocking key switches between four 12V rails and one massive 12V rail Modular cable management for maximum convenience Active Rectifier full bridge LLC technology provides unmatched signal stability and extremely high power efficiency Ten-year manufacturer’s warranty 80 PLUS® Titanium Certified The highest efficiency certificate available Dark Power 12 850W is certified with 80 PLUS Titanium and an energy efficiency rating of up to 95.6 . This provides lots of benefits for your high-end system, including less power consumption and an overall cooler and quieter operation. The standby drain is below 0.1 watts.   Frameless Silent Wings Fan Patented fan technology for virtually inaudible operation The be quiet! Silent Wings fan mounted on a tripod enables maximum airflow and a virtually inaudible operation. This is thanks to its unique, airflow-optimized fan blade design along with an advanced fluid-dynamic bearing and 6-pole fan motor for less vibration, super-long life and minimal power consumption.    Innovative Cooling Concept For a longer lifespan The split fan inlet of the Dark Power 12 850W is a custom-shaped funnel that increases airflow while reducing unwanted turbulence. The wire-free design inside allows the cool air to reach all components flawlessly which ultimately leads to a longer lifespan.   Ready For Overclocking Pushing the performance of your PSU to the max Dark Power 12 850W is particularly suitable for overclocking, thanks to its strong and stable 12V rails. The overclocking key gives you full overclocking control by manually switching between the default four 12V rail mode and the alternative massive single-rail operation.   Highest Convenience And Best Connectivity Modular cables The maximum utility provided by modular sleeved cables of up to 120cm simplifies component installation and reduces annoying clutter. This results in increased airflow and improved cooling in even the largest PC cases.   World Class Topology State-of-the-art technology for extremely high power efficiency With an active rectifier and full bridge LLC technology Dark Power 12 850W  offers some of the most advanced technologies available, resulting in higher efficiency, better regulation and lower ripple noise for an incomparably stable operation.   Japanese 105° Capacitors A testament to high quality Only the best components are used in Dark Power 12 850W. That is why we have exclusively built high-quality Japanese capacitors into the PSU chassis. They are rated to 105°C which ensures stability, reliability and a long operating life Specification Form Factor: ATX Modular: Fully Modular Series: Be Quiet! Dark Power 12 Compatability: ATX 12V 2.52 & EPS 12V V2.92 Wattage: 850 W Connectors: 1 x ATX-Motherboard (20 4-pin) 1 x P8 (CPU) 1 x P4 4 (CPU) 6 x PCI-e 6 2-pin (GPU) 5 x PATA 12 x SATA 1 x FDD (Floppy) Rail Design: OC key switches between four 12V rails and one massive 12V rail AC Input: AC 100-240 V PFC: Active PFC Fan Type: 135mm Silent Wings 3 fan Fan Bearin Fluid / Hydraulic Bearing Noise: dB(A) at 20 load: 9.3 dB(A) at 50 load: 9.7 dB(A) at 100 load: 20 80 Certification: 80 Titanium Efficiency: \"230V, 20 load: 94.7 230V, 50 load: 95.6 230V, 100 load: 93.2 \" MTBF: \"200,000 hours \" Protection: Over current Over Voltage Under Voltage Short circuit Over temperature Over power Package Contents: Thumb screws Screws Cable ties Velcro cable ties Box/Bag for PSU/Cables User manual languages OCK slot bracket with switch / OCK jumper Weight/Dimensions: 1.97 kg (L x W x D) 175 x 150 x 86 mm Package Weight: 3.6500 kg Warranty: 10 Years