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Be quiet! System Power B9 80 Plus Bronze Power Supply - 350 Watt [BN207]

Be quiet! System Power B9 80 Plus Bronze Power Supply - 350 Watt
Be quiet! System Power B9 80 Plus Bronze Power Supply - 350 Watt
Be quiet! System Power B9 80 Plus Bronze Power Supply - 350 Watt
Be quiet! System Power B9 80 Plus Bronze Power Supply - 350 Watt


Be quiet! power supplies are designed to produce as little noise as possible during operation, fantastic build quality, high efficiency as well as the greatest possible safety and reliability. Thanks to these design choices be quiet! has become one of the most popular brands in this segment.

Stock, Shipping & Collection Options

  10+ Available Delivery in 2-3 Days
  FREE UK/EU DELIVERY over £500+
  10+ Available for Collection
MPN: BN207
EAN: 4260052185995
Warranty: 12 Months
£40.76 inc VAT
  • USD $56.64 *

* Currency conversions are based on live rates. All orders are billed in GBP


The System Power B9 Series is no exception in this respect. With its excellent price-to-performance, high efficiency and quality craftsmanship, these compact power supplies are directed primarily at system integrators and price conscious system builders.

The be quiet! System Power B9 at a Glance:

    Fantastic value
    Practical bulk-purchase packaging
    Quiet, temperature-regulated, quality 120 mm fan
    Stand-by usage of less than 0,13 Watts
    Extensive electrical protection

The be quiet! System Power B9 in Detail:

These robustly designed power supplies offer a low build depth of just 14 cm, making them compatible with older and smaller cases. A 120 mm fan that adjusts in accordance with the load. At low loads of around 20 percent, the power supply produces just 11,6 dB(A) noise so as to be virtually silent.

Thanks to the extensive use of efficient and power-saving circuitry, power consumption and heat are minimised. Standby power use amounts to just 0,13 Watts. At a load of 20, 50 and 100 percent the power supply reaches a power effectiveness of up to 87 percent. For this the PSU was awarded with 80Plus certification.

With its 300 Watt rating, this power supply is ideal for multimedia and office PCs. In addition to the stable 3,3 V- and 5 V rails, two 12 V rails offer 18 and 14 A to produce a total of 276 Watts. Modern multicore CPUs and peripherals will be supplied with all the power they are likely to need.

The role of supplying this power falls to the extensive range of connectors. To this end, the power supply comes with a 20+4-pin- and a 4-pin ATX connector for the motherboard. Four SATA- and two Molex connectors supply peripherals' power. All cables are securely fastened to the power supply.

Also worthy of note is the generous 3 year manufacturer's guarantee on offer as well as the availability of all necessary electrical protections e.g. over- and undervoltage protection, short circuits, overheating and overload protection.

Note: Neutral packaging with power cable - comes without additional accessories.

Technical Details:

    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: 300 W
    +3,3V: 17 A
    +5V: 15 A
    3,3V+5V: 103 W
    +12V1: 18 A
    +12V2: 14 A
    +12V (total): 276 W
    -12V: 0,3 A (3,6 W)
    +5Vsb: 2,5 A (12,5 W)
    1x 20+4-Pin (ATX12V)
    1x 4-Pin (ATX12V)
    4x SATA
    2x 4-Pin Molex
    Cable Length: 45 - 85 cm


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