Total Price:

Exc. VAT : £ 36.20
Inc. VAT : £ 43.44

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

Exc. VAT : £ 36.20
Inc. VAT : £ 43.44

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.


80+ Bronze
Up to 89%
100,000 hours
Over current Over voltage Under voltage Short circuit Over temperature Over power
See Overview
1.92 kg (L x W x D): 140 x 150 x 86 mm
dB(A) at 20% load 11.1 dB(A) at 50% load 13.6 dB(A) at 100% load 28.2
Package Weight
2.3500 kg
3 Years

80+ Certification
Form Factor
500 W
Be Quiet! System Power 9
Fully Wired
ATX 12V v2.4
#Hide#Wattage Range
450 - 560W
Sleeve Bearing
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)
Rail Design
Dual +12V
AC Input
Active PFC
Fan Type
High-quality 120mm fan Sleeve Bearing
Fan Bearing