World Class Quiet & Efficency be quiet! Straight Power 11 550W raises the bar for systems that demand virtually inaudible operation without power quality compromises Virtually inaudible Silent Wings 3 135mm fan Funnel-shaped fan opening of the PSU case for high airflow intake Wire-free inside the PSU on the DC side for enhanced cooling & longevity Full cable management for maximum build flexibility 80PLUS Gold efficiency (up to 93) Powerful multi-GPU support with two PCI-Express connectors Japanese 105C-rated capacitors ensure stability & reliability Er P & Energy Star 61 ready 5-year manufacturers warranty Silent Wings 3 Fan Provides virtually inaudible operation The high-end Silent Wings 3 fan delivers best-of-class airflow yet produces very little noise This is thanks to its unique optimized fan blade design along with an advanced fluid-dynamic bearing & 6-pole fan motor that largely eliminates operational noise has a super-long life & minimal power consumption Funnel-Shaped Fan Opening Higher cooling performance The fan inlet of the Straight Power 11 550W is funnel-shaped It causes an increased throughput of air which benefits to a higher cooling performance Wire-Free Design Inside The PSU Pushing the longevity of components to a maximum An absolute innovation The Straight Power 11 550W is wire-free on the DC side inside the PSU body This results in enhanced cooling airflow & less signal disturbance simply because of a lack of wiring & ultimately pushes the lifetimes of the components to a maximum Fully Modular Cable Management Utmost convenience & compatibility Thanks to the fully modular cable management cables that serve no purpose in the system are left out For this reason systems always appear very tidy At the same time installation is performed much more conveniently A smoother airflow results from the uncluttered layout of the system which means lower noise & temperatures prevail inside the case 80PLUS GOLD Certified Impressively high efficiency Straight Power 11 550W is certified with 80PLUS Gold efficiency reaching up to 93 This gives less power consumption & a cooler & quieter operation Truly a benefit for any system High-Class Technologies Compatibility for the systems of tomorrow The use of LLC & Synchronous Rectifier (SR) provides very stable operation & enhanced voltage regulation The PSU is equipped with DC-to-DC conversion for tight voltage regulation even under heavy cross-loading conditions This ensures reliable operation with the next generation of processors & graphics cards Japanese 105 Capacitors A testament to high quality Only the best components are used in Straight Power 11 550W That is why we have built only high-quality Japanese capacitors into the PSU chassis They are rated to 105C ensuring stability reliability & a long operating life SPECIFICATIONS testing Description Specification Series Be Quiet! Straight Power 11 Compatability ATX 12V 24 & EPS 12V 292 Wattage 500 WModular Fully Modular Connectors 1 x ATX-Motherboard (20 4-pin)1 x P4 4 (CPU)2 x PCI-E 6 2-pin (GPU)3 x PATA 4 pin 9 x SATA 15-pin (HDD Drives)1 x FDD (Floppy)3 x Mainboard connector (PATA 4-pin) Rail Design Quad 12VAC Input AC 100-240 VPFC Active PFCFan Type Silent Wings 3 fan (fluid-dynamic bearing) Hide Fan Bearing Fluid Hydraulic Bearing Noise d B (A) at 20 load 902d B (A) at 50 load 946d B (A) at 100 load 172280 Certification 80 Gold Efficiency up to 93MTBF 100000 hours Protection Over current Over voltage Under voltage Short circuit Over temperature Over power Features See Overview Weight Dimensions 151kg 160 x 150 x 86 mm Package Weight 30400kg Warranty 5 Years