Be Quiet! 400W Pure Power 11 CM PSU, Semi-Modular, Rifle Bearing Fan, 80 Gold, Cont. Power Exceptionally Quiet, Superior Reliability, Great Value   Pure Power 11 400W CM offers peerless dependability and best-in-class features. Whether you’re assembling a very quiet system, upgrading an existing PC, or building a multi-GPU gaming system, your build will benefit from this PSU that simply has the best combination of features at a very popular price.      80PLUS® Gold efficiency (up to 92 )     Two strong 12V-rails     Stable operation thanks to Active Clamp and Synchronous Rectifier (SR) technology     DC-to-DC conversion for even tighter voltage regulation under heavy cross-loading conditions       Silence-optimized 120mm be quiet! fan     Multi-GPU support with two PCIe connectors      Cable management with flat cables for PCIe connectors and drives      Full suite of top safety features      Meets latest Intel® C6/C7, ErP and Energy Star guidelines     Supports all Intel® and AMD™ processors     5-year manufacturer’s warranty     Product conception, design and quality control in Germany 80 Plus Gold Certification     Very high operating efficiency     Pure Power 11 400W is certified 80 PLUS Gold with an efficiency rating of up to 92 – a truly outstanding level for this class of PSU. The most compelling benefit: lower power consumption and consequently lower costs, and cooler, quieter operation. Power and Compatibility for your System      The best combination of features and performance at a very popular price     Pure Power 11 CM offers 400W of continuous power with two independent 12V rails for signal stability and two PCI express connectors for multi-GPU systems. It is suited to very quiet systems, for upgrading or building multimedia or multi-GPU gaming systems. Innovative Technologies     DC-to-DC, Active Clamp and Synchronous Rectifier     The use of Active Clamp and Synchronous Rectifier technologies provides very stable operation. The PSU is equipped with DC-to-DC conversion for even tighter voltage regulation under heavy cross-loading conditions. This ensures secure operation for next generation processors and graphics cards. Exceptionally Silent Operation      Achieved by a silence-optimized 120mm be quiet! fan     The silence-optimized 120mm be quiet! fan is thermally governed to strike the best balance between effective cooling and quietness. Airflow-optimized fan blades reduce turbulence, enabling best-in-class quiet functionality and the almost inaudible operation that be quiet! is famous for.  Modular Cable Management with Flat Cables     Total convenience and design for your system     Pure Power 11 400W CM is certainly eye-catching. The modular cable management is enhanced with premium black, sleeved cables. The flat cables used for the PCI-express connection and drives simplify installation as well as keeping the system tidy. Specification Form Factor: ATX Modular: Semi Modular Series: Be Quiet! Pure Power 11 Compatability: ATX 12V 2.4 Wattage: 400 W Connectors: \"1 x ATX-Motherboard (20 4-pin) 1 x P4 4 (CPU) 2 x PCI-E 6 2-pin (GPU) 2 x PATA 4-pin 5 x SATA 15-pin (HDD, Drives) 1 x FDD (Floppy)\" Rail Design: Dual 12V AC Input: AC 100-240 V PFC: Active PFC Fan Type: 120mm Silence-optimized be quiet! fan Fan Bearin Rifle Bearing Noise: dB(A) at 20 load: 9.4 dB(A) at 50 load: 9.9 dB(A) at 100 load: 13.9 80 Certification: 80 Gold Efficiency: \"230V, 20 load: 89.6 230V, 50 load: 91.7 E230V, 100 load: 90.0 \" MTBF: \"100,000 hours\" Protection: Over current Over voltage Under voltage Short circuit Over temperature Over power Weight/Dimensions: 160 x 150 x 86 mm Package Weight: 2.2300 kg Warranty: 5 Years