Exceptionally Quiet, Superior Reliability, Great Value


Pure Power 11 400W offers peerless dependability and best-in-class features. Whether you’re assembling a very quiet system, building a multi-GPU gaming system, or upgrading an existing PC, your build will benefit from this PSU that simply has the best combination of features at a very popular price.


  • 80PLUS® Gold efficiency (up to 92%)
  • Two strong 12V-rails
  • Stable operation thanks to Active Clamp and Synchronous Rectifier (SR) technology
  • DC-to-DC conversion for even tighter voltage regulation under heavy cross-loading conditions  
  • Silence-optimized 120mm be quiet! fan
  • Multi-GPU support with two PCIe connectors
  • High-quality sleeved cables with easy-plug HDD connector  
  • Full suite of top safety features 
  • Meets latest Intel® C6/C7, ErP and Energy Star guidelines
  • Supports all Intel® and AMD™ processors
  • 5-year manufacturer’s warranty
  • Product conception, design and quality control in Germany



80 Plus Gold Certification 


Very high operating efficiency

Pure Power 11 400W is certified 80 PLUS Gold with an efficiency rating of up to 92% – a truly outstanding level for this class of PSU. The most compelling benefit: lower power consumption and consequently lower costs, and cooler, quieter operation.





Power and Compatibility for your System


The best combination of features and performance at a very popular price

Pure Power 11 offers 400W of continuous power with two independent 12V rails for signal stability and two PCI express connectors for multi-GPU systems. It is suited to very quiet systems, for upgrading or building multimedia or multi-GPU gaming systems.



Be Quiet! 400W Pure Power 11 PSU, Fully Wired, Rifle Bearing Fan, 80+ Gold


Product Description

Be Quiet! 400W Pure Power 11 PSU, Fully Wired, Rifle Bearing Fan, 80+ Gold, Cont. Power

Form Factor



Fully Wired


Be Quiet! Pure Power 11


ATX 12V 2.4


400 W


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


Active PFC

Fan Type

Silence-optimized be quiet! fan


dB(A) at 20% load: 10.5
dB(A) at 50% load: 11.4
dB(A) at 100% load: 14.9

80+ Certification

80+ Gold


230V, 20% load: 87.1%
230V, 50% load: 90.9%
E230V, 100% load: 89.5%


100,000 hours


Over current
Over voltage
Under voltage
Short circuit
Over temperature
Over power


See Overview


150 x 150 x 86 mm
1.9 kg

Package Weight

2.2200 kg


5 Years