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be quiet! SFX POWER 2 400W BN227

(£62.40 inc VAT)
Short description:
For MicroATX / SFX Chassis
80Plus Bronze
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Dimensions W D H
100mm 125mm 63.5mm
ATX Spec SFX 12V Version 3.3
Effiency 80+ Bronze Certified,
86.8% efficiency at 20% Load
89.3% efficiency at 50% Load
87.5% efficiency at 100% Load
Fan 80mm Sleeve Bearing Fan
20.7dBA at 20% Load
20.9dBA at 50% Load
33.9dBA at 100% Load
Connectors Molex Floppy SATA
1 1 4
PCI-E M.board AUX
1 x 6/8Pin 20/24 1 x 4 Pin
Output Current +3.3v +5v +12v
21A 22A 17A / 16A
-12v -+5vsb 12v Rails
0.5A 2.5A 2
+3.3v & 5v Power 120W
+12v Power 360W
-12v Power -
+5vsb Power
Total Power 400W Continuous (450W Peak)
Input Voltage 100-240v Auto
Modular No
Motherboard Cable Lengths 35cm

The high-power SFX Power 2 400W compact PSU gives you more for your mini or media PC. Its design supports the latest technologies and efficiency standards, while providing solid voltages and enough power to support a discrete PCIe graphics card.

For compact PC systems that perform well beyond the ordinary, with a great combination of quietness, features, reliability and efficiency, choose SFX Power 2 400W.

  • Strong dual 12V-rail design supports high stability and a PCIe connector for peripherals that need more power, like a PCIe graphics card
  • 400 watts of continuous power to ensure steady operation even when your PC meets an unexpectedly heavy load
  • 80PLUS Bronze certification and up to 89% power conversion efficiency let you use the provided energy more efficiently and reduces your power bills
  • Product conception, design and quality control in Germany


  • Mini and media PC systems
  • Classic office and web browsing applications
  • High-power, high-efficiency upgrade in any PC chassis requiring a SFX form factor PSU

Feature Details

Energy Efficiency

  • 80PLUS Bronze certification independently verifies the high operating-efficiency (up to 89%) of this design
  • Higher efficiency means cost savings, because your PC draws less power from the mains. It also means less wasted heat, less cooling required, and an overall quieter operation
  • Standby drain of less than 0.25 watts
  • Meets Energy Star 5.2 guidelines
  • Fulfills ErP 2014 guidelines
  • Zero Load design and support of Intel?s Deep Power Down C6/C7 mode


  • Use of the latest technology ensures premium performance and reliability
  • Supports the latest Intel® and AMD? CPUs
  • Dual independent 12V-rails improve power signal stability
  • Full suite of top safety protections defends against over-currents, over- and under-voltages, short circuits, and overloads, thus safeguarding your valuable components Low-Noise Operation
  • An automatically temperature-regulated 80 mm high-quality fan
  • Assured balance between cooling performance and quiet operation

Highly Compatible and Convenient

  • Sleeved cable lengths up to 50cm allow for improved cooling and are perfect for mini PC cases
  • System features 9 connectors for flexible system builds
  • Connectors are compatible with older components as well as those still on the drawing board
  • PCIe connector supports discrete graphics card
  • Clearly labeled plugs enable simple installation

Product Conception, Design and Quality Control in Germany

  • 2- year warranty

New features

Be quiet!

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