Next Day Delivery

With 1000s of items in stock & available for immediate dispatch. All orders are dispatched the very same day where possible using DPD with a 1 hour time window for delivery!

Unbeatable Value & Service

Here at Computer Technology Stoke we believe we have the perfect balance between Quality Product, Unbeatable Price & Great Customer Service!

Quality Guaranteed

We hand pick all of our products to ensure complete confidence before offering them to our customers. We have every faith in the brands we sell!

No Quibble Returns

We offer a 'No Quibble' returns policy. If you have any problems with your order or any part of it then please feel free to contact us for assistance!
  • Series: Be Quiet! System Power 8
  • Compatability: ATX 12V
  • Wattage: 400 W
  • Modular: No
  • Connectors:
    • 1 x ATX-Mainboard (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)
  • Rail Design: Dual +12V
  • AC Input: AC200-240 V
  • PFC: Active PFC
  • Fan Type: High-quality 120mm fan
  • Noise:
    • dB(A) at 20% load: 13.3
    • dB(A) at 50% load: 14
    • dB(A) at 100% load: 25.1
  • Efficiency: 80PLUS certified (up to 86%)
  • MTBF: 100,000 hours
  • Protection:
    • Over current
    • Over voltage
    • Under voltage
    • Short circuit
    • Over temperature
    • Over power
  • Weight / Dimensions
    • (L x W x D) 140 x 150 x 86 mm
    • 1.75 kg
  • Package Weight: 2.1000 kg
  • Warranty: 3 Years

Proven Reliability and Good Efficiency

Especially designed by be quiet! with the price-conscious PC builders in mind - the new be quiet! System Power 8 400W, featuring true be quiet! reliability with two 12V-rails and rock-solid voltages. The series is certified 80PLUS® efficient and able to support multiple GPUs with two PCIe connectors.

System Power 8‘s combination of power, quietness for its class and efficiency is far beyond ordinary, letting you build cost-effective and reliable systems - a key differentiator in these days of identical commodities.

  • 400W of continuous power and two 12V-rails ensure rock-solid voltage stability for powerful multi-GPU systems
  • 80PLUS® certification and up to 87% power conversion efficiency
  • Quiet operation for its class achieved by an array of careful optimizations, including the use of a quiet 120mm fan
  • Attractively sleeved cables simplify component installation, increase airflow and improve cooling
  • Product conception, design and quality control in Germany


  • Office applications and entry-level gaming systems
  • Low-budget and quiet PC builds
  • Quiet multimedia and home theater systems


  • Full suite of top safety protections defends against over-currents, over- and under-voltages, short circuits, overheating and overloads, thus safeguarding your valuable components
  • Two independent 12V-rails improve power signal stability
  • High-quality sleeved cables simplify component installation, increase airflow and improve cooling
  • Two PCI express connectors for multi-GPU system configurations
  • Compatible with 230V AC power mains
  • Full performance during 24/7 operation

Energy Efficiency

  • 80PLUS® certification means operating efficiency for its class of up to 87%
  • High efficiency means cost savings, reduced heat wastage and overall quieter operation
  • Standby drain of less than 0.13 watts
  • Meets Energy Star 6.0 guidelines
  • Fulfills ErP 2014 guidelines
  • Zero Load design supports Intel®’s Deep Power Down C6/C7 mode

Quiet Operation

  • High-quality 120mm fan is thermally controlled to strike the best balance between proper cooling and quietness
  • Efficient PSU design produces low operating temperatures

Outstanding Service and Support

  • 3-years manufacturer's warranty

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Be Quiet! 400W System Power 8 80 Plus PSU

  • Brand: Be Quiet
  • Product Code: System Power 8
  • MPN: BN240
  • SKU: DS-PSU-BQ-400-SP8
  • EAN: 4260052184356
  • Availability: Out Of Stock
  • £39.08

Tags: Be, Quiet!, 400W, System, Power, 8, 80, Plus, PSU

- We endeavour to keep our adverts up to date. However images are for illustration only and the supplied product may vary. E&OE.
- Please ensure suitability of the product with your equiptment before purchase.
- For assistance call a member of our team on 01782 82 19 19

What we do!

PC Components, Home, Office & Gaming Systems, Computer Parts, Graphics Cards, Motherboards, Memory RAM, Upgrade Kits - Bundles, Monitors, Networking, Keyboards, Mice, Headsets, Peripherals and much more

Who Are We?

We are a family driven team of PC and gaming enthusiats and are happy to help in anyway we can! Please feel free to contact us if you have questions or cannot find what you are looking for.

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