SYSTEM POWER B8 | 300W bulk

Art.No. BN256

Proven Reliability and Good Efficiency

It’s not easy being a system integrator in today’s competitive PC computing environment. Your customers demand more, while you want the best price-for-performance available. That is why be quiet! System Power B8 is the ideal choice for you. Especially designed with the price-conscious PC builders in mind, its combination of power, quietness for its class and efficiency is beyond ordinary, and is letting you build cost-effective and reliable systems.

  • 300W of continuous power and two 12V-rails ensure rock-solid voltage stability
  • 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
  • Production-optimized thanks to convenient bulk packaging
  • Product conception, design and quality control in Germany


  • Office applications
  • Gaming systems
  • Low-budget and quiet PC builds

Feature Details


  • 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
  • Compatible with 230V AC power mains

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 0.14 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
  • Production-optimized bulk packaging
  • Quick support is available via our international hotline, Mondays to Fridays from 9:00am to 5:30pm CET:
    +49 (0) 40-736 76 86 - 98