Be Quiet! 500W System Power 9 PSU, 80+ Bronze, Dual 12V, Cont. Power

£47.81 (£39.84 + VAT)

741 in stock (can be backordered)

SKU: BN246 Category:

Product Information

Proven Reliability and Good Efficiency

be quiet! System Power 9 500W offers renowned be quiet! reliability and quietness for price-conscious PC builders.

  • 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
  • 80PLUS® Bronze efficiency (up to 89%)
  • Attractive black sleeved cables
  • Complete suite of top safety features
  • Meets latest Intel® C6/C7, ErP and Energy Star 6.1 guidelines
  • 3-year manufacturer’s warranty
  • Product conception, design and quality control in Germany


Very Quiet Operation 

Attained by using a high-quality fan
System Power 9 500W 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

High operating efficiency
The 80PLUS® 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

Proven reliability for CPU and GPU
System Power 9 500W 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

Equipped with a wealth of advanced technology
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.
High-Quality Cable Design

Attractive design for high performance, cost-effective systems
System Power 9 500W comes with full high-quality black sleeved cables that add a touch of class to any PC system.
Comprehensive Protection 

A complete range of safety features
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 12V v2.4


1.92 kg
(L x W x D): 140 x 150 x 86 mm

Memory Model

Be Quiet! System Power 9


3 Years


See Overview


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)


100,000 hours




Fully Wired


Be Quiet! System Power 9


500 W

AC Input



Active PFC

Fan Type

Fan Bearing

Sleeve Bearing

80+ Certification

80+ Bronze


Over current
Over voltage
Under voltage
Short circuit
Over temperature
Over power