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Be Quiet! 500W System Power 9 CM PSU, Semi-Modular, Sleeve Bearing, 80+ Bronze, Dual 12V, Cont. Power

Quick Code: S/BN301 | UPC: 4260052187227

Includes FREE UK Delivery

We have 1 of these in stock.


be quiet! System Power 9 500W CM offers renowned be quiet! reliability and quietness for cost-effective and reliable systems.

  • Rock-solid stability with two strong 12V-rails
  • DC-to-DC technology for tight voltage regulation 
  • Multi-GPU support with two PCIe connectors
  • Temperature-controlled 120mm fan reduces system noise
  • Stand-by drain of less than 0.15 watts
  • 80 PLUS® Bronze efficiency (up to 89%)
  • Semi-modular, high-quality sleeved and flat cables
  • All-in-one cable with S-ATA, HDD and FDD connectors
  • Complete suite of top safety features
  • Meets latest Intel C6/C7, ErP and Energy Star 6.1 guidelines
  • 3-year manufacturer’s warranty
Very Quiet Operation 
System Power 9 500W CM is equipped with a temperature-controlled 120mm fan. It provides you with the low noise operation that be quiet! is famous for, built into an entry-level system.
80+ Bronze Certification 
The 80 PLUS Bronze certification is convincing evidence of this PSU’s efficient and power saving operation. It is a remarkable achievement for this class of PSU, realizing an efficiency rating of up to 89%. 
High Performance for Your System
System Power 9 500W CM provides stable and dependable power for CPU and GPU. It is equipped with two independent 12V-rails and supports several graphics cards with two PCI express connectors for multi-GPU systems.
Innovative DC-to-DC Conversion 
The PSU is equipped with DC-to-DC conversion for tight voltage regulation, even under heavy cross-loading conditions. This ensures reliable operation and makes it ready for the next generation of processors and graphics cards.
Semi-Modular Cable Management 
System Power 9 500W CM comes with full high-quality black sleeved cables that add a touch of class to any PC system. Thanks to the semi-modular cable management, cables that serve no purpose in the system are left out.
Comprehensive Protection
Top component protection with a full suite of safety functions, including OCP, OVP, OPP, OTP UVP and SCP, which provide the ultimate in secure operation.



    • Form Factor: ATX
    • Modular: Semi Modular
    • Series: Be Quiet! System Power 9
    • Compatability: ATX 12V v2.51
    • Wattage: 500 W
    • Connectors: "1 x ATX-Motherboard (20+4-pin)
      1 x P4+4 (CPU)
      2 x PCI-E 6+2-pin (GPU)
      2 x PATA 4-pin
      6 x SATA 15-pin (HDD, Drives)
      1 x FDD"
    • Rail Design: Dual +12V
    • AC Input: AC200-240 V
    • PFC: Active PFC
    • Fan Type: High-quality 120mm fan
      Sleeve Bearing
    • #Hide#Fan Bearing: Sleeve Bearing
    • Noise: dB(A) at 20% load: 9.7
      dB(A) at 50% load: 11.5
      dB(A) at 100% load: 24.4
    • 80+ Certification: 80+ Bronze
    • Efficiency: Up to 88%
    • MTBF: "100,000 hours"
    • Protection: Over current
      Over voltage
      Under voltage
      Short circuit
      Over temperature
      Over power
    • Features: See Overview
    • Weight/Dimensions: 1.56 kg
      140 x 150 x 86 mm
    • Package Weight: 2.4000 kg
    • Warranty: 3 Years
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