500W PSU 80Plus Bronze be quiet! Straight Power 9 Power Supply – BN301


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

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SKU: BN301 Category: Tags: , ,


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

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

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

Weight/Dimensions: 1.56 kg

140 x 150 x 86 mm

Package Weight: 2.4000 kg

Warranty: 3 Years

Additional information

Cable Type

Semi Modular




80 Plus Bronze


Be Quiet!



Power Type

Power Supply





model number



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