be quiet! is a well-known German manufacturer for its quality PC peripherals products. The most critical part when building a new computer is the power supply. Most users try to get cheap power supplies that lead to failures and bad performance and probably increased noise. be quiet! has the answer for middle sized users, the Straight Power 11 series. Today we will examine the 650Watt, what would be enough to power up an AMD Ryzen 5 system with low end graphics card and several fans/HDDs installed.

World-class Efficient and Power-Saving Operation

• 80 PLUS® Platinum certification with an extremely high operating efficiency of up to 94,1%
• 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 0.16 Watts

Virtually Inaudible Operation

• The Silent Wings 3 135mm fan features an advanced fan frame, airflow-optimized fan blades, fluid-dynamic bearing and a high-quality 6-pole motor for minimal 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

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

• Convenient full cable management 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
• multi-GPU support with up to six PCIe connectors

Outstanding Service and Support

• 5-year manufacturer's warranty
• Product conception, design and quality control in Germany