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be quiet! System Power 9 400W 80 Plus Bronze Power Supply

be quiet!
System Power 9 400W 80 Plus Bronze Power Supply

  • Specially designed by be quiet! with the price-concious PC builder in mind: System Power 9 400W offers renowned be quiet! performance and quietness.

14 In stock

£44.99 *
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Stock Code: CA-134-BQ

EAN: 4260052186046

MPN: BN245

Manufacturer: be quiet!

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Product information:

System Power 9 400W 80 Plus Bronze Power Supply

Be quiet! power supplies are characterised by minimal operating noise, outstanding workmanship, high efficiency and maximum protection and reliability. Thanks to these features, the well-known power supply manufacturer is one of the most popular brands in this segment. The System Power 9 series is no exception to this rule. With an outstanding price/performance ratio, excellent efficiency and high-quality workmanship, these compact power supplies are directed primarily towards system integrators and price-conscious system builders.

The be quiet! System Power 9 at a Glance:

  • Fantastic price/performance ratio
  • Stable power supply thanks to DC-DC technology
  • 2x 6+2-Pin connectors for multi-GPU systems
  • Quiet, high-quality, temperature controlled 120 mm fan
  • Stand-by power consumption of less than 0,15 Watts
  • Comes complete with the most important electrical protection technology

The be quiet! System Power 9 in Detail:

The discreetly designed System Power series of power supplies have a low installation depth of just 14 cm, which makes them compatible with older and smaller cases. Cooling is provided by a 120 mm fan with automatic speed adjustment. The power supply unit produces just 9,5 dB (A) at around 20% load, which is exceptionally quiet.

Thanks to numerous energy-saving and efficiency-enhancing measures, electricity consumption and heat generation are both very low. Even the standby consumption is low at an incredible 0,15 Watts. At loads of 20, 50 and 100% the power supply achieves an efficiency of up to 89% to earn an 80Plus certification.

With a 400 Watt rating, this power supply is ideal for entry-level gaming systems and multimedia PCs. In addition to powerful 3,3 V and 5 V lines, which are particularly stable thanks to DC-DC technology, the two 12 V lines (22 and 18 A) can together handle 384 Watts. Multi-core CPUs, GPUs, or RAID setups will all be amply supplied - perfect for any system builder.

A broad range of connections are available on this power supply. A 20+4-pin and a 4+4-pin ATX connector supply power to the motherboard. Two 6+2-pin connectors are available for the graphics cards. Five SATA and two Molex connectors are present and these offer connectivity to an extensive range of peripherals. All cables are permanently connected to the power supply and are sleeved.

Be quiet! has also provided a long 3-year warranty period for their power supplies as well as a range of important protections e.g. over- and undervoltage, overcurrent, short-circuit protection, overheating and overload protection.


  • Dimensions: 150 x 86 x 140 mm (W x H x D)
  • Fan: 120 mm
  • Efficiency: 89 % incl. 80Plus certification
  • Active PFC
  • Form Factor: ATX12V
  • Performance: 400 W
    +3,3V: 24 A
    +5V: 15 A
    3,3V+5V: 103 W
    +12V1: 22 A
    +12V2: 18 A
    +12V (total): 384 W
    -12V: 0,3 A (3,6 W)
    +5Vsb: 3 A (15 W)
  • Connections:
    1x 20+4-Pin (ATX12V)
    1x 4+4-Pin (ATX12V)
    2x 6+2-Pin PCIe
    6x SATA
    2x 4-Pin Molex
    Cable Length: 55 - 91 cm

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