Be Quiet! 500W System Power 9 PSU

£ 49.98  inc. vat

£53.39save £3.41

£ 41.65 ex. vat

£44.49save £2.84

Be Quiet! 500W System Power 9 PSU

QuickFind: 859747 Mfr part code: BN246
  • Rock-solid stability with two strong 12V-rails
  • DC-to-DC technology for tight voltage regulation
  • Multi-GPU support with two PCIe connectors
  • Stand-by drain of less than 0.15 watts

Product Description

Be Quiet! 500W System Power 9 PSU

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.



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%. 



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.



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.



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.



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.

Technical Specification

Be Quiet! 500W System Power 9 PSU


Device Type Power supply - active Power Factor Correction (PFC) - internal
Specification Compliance ATX12V 2.4
PSU Form Factor ATX
Colour Black

Power Device

Input Voltage AC 200-240 V
Frequency Required 50 Hz
Power Output Connectors Details 1 x power 24 pin ATX with detachable 4 pin section ¦ 1 x power 8 pin +12V with detachable 4 pin section ¦ 2 x 8 pin PCI Express power with detachable 2 pin section ¦ 6 x 15 pin Serial ATA power ¦ 2 x 4 PIN internal power
Output Voltage +3.3, +5, ±12 V
Power Capacity 500 Watt
Output Current +3.3V - 24 A ¦ +5V - 15 A ¦ +12V1 - 24 A ¦ +12V2 - 20 A ¦ -12V - 0.3 A ¦ +5VSB - 3 A
Efficiency 87% at 20% Load, 86% at 100% Load, 89% at 50% Load
Power Factor (PF) 0.95
80 PLUS Certification 80 PLUS Bronze


Cables Included Power cable 1.5 m
MTBF 100,000 hours
Cooling System 120 mm fan
Features Sleeved cables, overheat protection, over current protection, over voltage protection, overload protection, undervoltage protection, dual 12V rails, short-circuit protection, temperature controlled fan, DC-DC technology, sleeve bearing cooling fan
Compliant Standards TUV, CB, RoHS, WEEE, ERP, RCM, CU

Environmental Standards


Manufacturer Warranty

Service & Support Limited warranty - 3 years

Environmental Parameters

Max Operating Temperature 40 °C
Sound Emission 28.2 dBA

Dimensions & Weight

Width 15 cm
Depth 14 cm
Height 8.6 cm
Weight 1.92 kg

Dimensions & Weight (Shipping)

Shipping Width 26.8 cm
Shipping Depth 19.5 cm
Shipping Height 9.7 cm
Shipping Weight 2.16 kg

Product Reviews

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Be Quiet! 500W System Power 9 PSU

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£ 49.98  inc. vat

£53.39save £3.41

£ 41.65 ex. vat

£44.49save £2.84
Pay in 3 interest-free instalments learn more
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    Add-ons and Accessories

    PSU Accessories

    Premium Braided 30cm PSU Extension Cable Kit - Black

    £12.99 inc. vat
    £17.70save £4.71
    £10.82 ex. vat
    £14.75save £3.93

    Premium Braided 30cm PSU Extension Cable Kit - White

    £12.99 inc. vat
    £15.32save £2.33
    £10.82 ex. vat
    £12.76save £1.94