Be Quiet! Pure Power 11 400W Power Supply - Silent Performance Meets Gold Efficiency

The Be Quiet! Pure Power 11 400W delivers exceptional reliability and quiet operation for mainstream PC builds. This fully wired ATX power supply combines 80 PLUS Gold certification with German engineering quality, making it an ideal choice for multimedia systems, gaming rigs, and silent PC builds.

80 PLUS Gold Certified Efficiency

Achieve up to 92% efficiency with 80 PLUS Gold certification. This PSU operates at 90.9% efficiency at 50% load, reducing power consumption, lowering electricity costs, and generating less heat. The result is a cooler, quieter system that saves money over time.

Dual 12V Rails with Multi-GPU Support

Two independent 12V rails provide stable power delivery with 400W continuous output. The inclusion of two PCIe 6+2-pin connectors enables multi-GPU configurations, while the comprehensive connector suite includes 1x ATX 20+4-pin, 1x P4+4 CPU, 5x SATA, 2x PATA, and 1x FDD connector.

Advanced Power Technologies

Active Clamp and Synchronous Rectifier technologies ensure stable operation under demanding conditions. DC-to-DC conversion provides tight voltage regulation during heavy cross-loading, guaranteeing reliable power for next-generation processors and graphics cards. The PSU meets Intel C6/C7, ErP, and Energy Star guidelines while supporting all Intel and AMD processors.

Silence-Optimized 120mm Rifle Bearing Fan

The thermally-governed 120mm Be Quiet! fan with rifle bearing technology delivers exceptional cooling while maintaining whisper-quiet operation. Noise levels measure just 10.5 dB(A) at 20% load, 11.4 dB(A) at 50% load, and 14.9 dB(A) at full load. Airflow-optimized blades reduce turbulence for the near-silent performance Be Quiet! is known for.

Premium Build Quality

High-quality sleeved cables simplify installation, improve airflow, and enhance system aesthetics. The convenient easy-plug HDD connector streamlines component installation. Comprehensive protection features include overcurrent, overvoltage, undervoltage, short circuit, over temperature, and overpower safeguards.

German Engineering with 5-Year Warranty

Designed and quality-controlled in Germany, the Pure Power 11 400W features a 100,000-hour MTBF rating and comes backed by a 5-year manufacturer's warranty. Compact ATX dimensions (150 x 150 x 86mm) and 1.9kg weight ensure compatibility with standard cases.

Description

Specification

• Form Factor: ATX
• Series: Be Quiet! Pure Power 11
• Wattage: 400 W
• Modular: Fully Wired
• Compatibility: ATX 12V 2.4
• #Hide#Wattage Range: 300 - 400W
• 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 Bearing: Rifle Bearing
• Noise: dB(A) at 20% load: 10.5
  dB(A) at 50% load: 11.4
  dB(A) at 100% load: 14.9
• Max Certification: Gold
• Efficiency: "80+ Gold
  230V, 20% load: 87.1%
  230V, 50% load: 90.9%
  E230V, 100% load: 89.5%"
• MTBF: "100,000 hours"
• Protection: Over current
  Over voltage
  Under voltage
  Short circuit
  Over temperature
  Over power
• Additional Features: See Overview
• Weight/Dimensions: 150 x 150 x 86 mm
  1.9 kg
• Package Weight: 2.2200 kg
• Warranty: 5 Years