World Class Quiet and Efficiency

The be quiet! Straight Power 11 PSU series provides a new level of silent performance for systems that demand whisper-quiet operation without the slightest compromise in power quality. Our German team has lavishly updated and designed premium features that are packed into this latest generation of the Straight Power series. These all go to make the Straight Power 11 more silent than ever and clearly a ‘Best Choice’ when building new systems or as an upgrade to existing systems.

Straight Power 11


  • Virtually inaudible operation achieved by ingenious features, such as the wire-free design inside the PSU, a be quiet! Silent Wings 3 135mm fan and a funnel-shaped fan opening
  • The Silent Wings 3 fan features an advanced fan frame, airflow-optimized fan blades, fluid-dynamic bearing and a high-quality 6-pole motor for minimal vibration
  • Innovative, wire-free design on the DC side inside the PSU body for better cooling airflow, less signal disturbance and enhanced longevity of components
  • Advanced stability and tight voltage regulation thanks to LLC, SR and DC-to-DC technology
  • Equipped with up to six PCI Express connectors for building powerful multi-GPU systems
  • Up to 1,000 Watts of continuous power with four stable 12V-rails
  • 80 PLUS® Gold certification with up to 93% power conversion efficiency
  • Modular cables for maximum build flexibility, reduced clutter and improved airflow
  • High-quality Japanese capacitors rated to 105°C ensure the ultimate in performance and reliability
  • Product conception, design and quality control in Germany


Virtually Inaudible Operation

  • Silent Wings 3 135mm fan for best-of-class airflow with very low noise, featuring:
    • unique airflow-optimized fan blade design that reduces noise-generating fan turbulence
    • advanced fluid-dynamic bearing that provides minimal operating noise and has a super-long life
    • 6-pole fan motor that diminishes electrical noise, power consumption, and vibration
  • Funnel-shaped fan opening of the PSU case is relatively large and this permits a high airflow intake
  • The Silent Wings 3 fan is decoupled from the PSU body with a special mounting, further reducing the transmission of vibration and noise
  • The fan speed is optimally varied to strike the best balance between sufficient cooling and deep quietness

World-class Efficient and Power-Saving Operation

  • 80 PLUS Gold certification with an extremely high operating efficiency of up to 93%
  • Innovative, wire-free design on the DC side inside the PSU body results in better cooling airflow, less signal disturbance and longer component life spans
  • Standby drain of less than 0.12 Watts
  • Fulfils Energy Star 6.1 and ErP guidelines
  • Zero-Load design that supports Intel’s Deep Power Down C6 and C7 modes

Very High Power Conversion, Performance and Stability

  • LLC, Synchronous Rectifier (SR) and DC-to-DC power conversion technology for advanced stability and tight voltage regulation
  • High-quality Japanese capacitors rated to 105°C for maximum performance, reliability and operating life
  • Full suite of top safety protections that guard against over-currents, over and under voltages, short circuits, overheating and overloads, thus safeguarding your valuable components
  • Four independent 12V-rails for improved power signal stability

Excellent Compatibility and Easy Usage

  • Modular cables for maximum build flexibility, reduced clutter, improved airflow and better cooling
  • Sleeved cables with lengths of up to 115cm are perfect for large PC cases
  • Up to six PCIe connectors for powerful multi-GPU configurations

Outstanding Service and Support

  • 5-year manufacturer's warranty