be quiet!s Pure Power 11 FM 550W offers peerless dependability and best-in-class features, such as modular cable management. Whether youre assembling a super-quiet system, upgrading your PC, or building a gaming system with a powerful high-end GPU: theres no doubt youll benefit from Pure Power 11 FM 550W. Simply put, this PSU has the best combination of assets at a competitive price.The Features of be quiet! Pure Power 11 FM 550W 80 Gold Power Supply at a Glance:80 PLUS Gold efficiency up to 93.3%Silent 120mm be quiet! FanModular cables for maximum build flexibilityTwo 12V-rails and full suite of safety featuresAdvanced stability and voltage regulation via LLC, SR, and DC-to-DCFour PCIe connectors for powerful GPUsMeets latest Intel C6/C7, ErP and Energy Star guidelinesSupports all Intel and AMD processorsFive-year manufacturer\'s warranty80 Plus Gold CertificationWith the be quiet! Pure Power 11 FM 550W PSU, youre guaranteed new heights of performance. The 80 PLUS Gold certification means you can enjoy an efficiency rating up to 93.3%. The best benefit of it all its lower power consumption results in not only lower costs, but cooler and quiet operation as well.Convenient Modular CablesOffering 550W of consistent power, the twin independent 12V rails of the be quiet! Pure Power 11 FM PSU offer ultimate signal stability. Furthermore, its four PCI express connectors offer powerful GPU support. Whether the system youre building is a high-end gaming PC or a battle station with quiet performance in mind, this PSU is the one for you.First-Rate TechnologiesThe be quiet! Pure Power 11 FM 550W PSU boasts compatibility for the gaming pcs of tomorrow. Any desktop housing this power supply unit is granted stable operation and enhance voltage regulation; due to the integrated LLC and Synchronous Rectifier (SR). Even when under heavy cross-loading conditions, the PSU is provided with tight voltage regulation, courtesy of the equipped DC-to-DC conversion. When using the next generation of graphics cards and processors, the be quiet! Pure Power 11 FM 550W PSU ensures reliable operation throughout.Incredibly Silent OperationUtilising a silent 120mm be quiet! Fan, the Pure Power 11 FM 550W PSU is thermally monitored to create the best balance between quietness and effective cooling. Enhanced for marvellous airflow, the fan blades reduce turbulence whilst maintaining that first-rate be quiet! functionality and almost-inaudible operation.Compatibility and PowerThe be quiet! Pure Power 11 FM 550W PSUs is equipped with the means for exquisite functionality. The fan is thermally governed to create the ideal balance between impeccable silence and cooling. Moreover, this airflow-optimised fans blades reduce turbulence, so youll be ensured the superb functionality and almost-completely silent operation that be quiet! PSUs are known for.be quiet! Pure Power 11 FM 550W 80 Gold Power Supply Specifications:ModelPure Power 11 FM 550WContinuous power (W)550Peak power (W)600Form FactorVersion 2.52Form factor EPS 12VVersion 2.92Modular Cable ManagementYesTopologyLLC + SR + DC/DCWire-free design (DC-side)YesVoltage (Vac)100-240Frequency (Hz)50-60Input current (A)10/5PFCActivePower factor at 100%>0.98