be quiet! System Power 9

400 W
28Ratings
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Product details

The be quiet! System Power 9 CM offers the reliable and quiet operation that be quiet! is known for, making it perfect for PC building. It provides a stable and dependable power supply for the CPU and GPU. The power supply is equipped with two independent 12V rails and supports graphics card configurations with two PCI-Express connectors. The DC/DC converter ensures strong voltage regulation, even under heavy cross-loads. This makes the power supply a reliable companion for the next generations of processors and graphics cards.

Key specifications

Form factor
ATX
ATX version
2.51
80 PLUS certificate
Bronze
Modularity
Partially modular cable management
Max. noise level
15 dB
Internal connection options
15-pin S-ATA (5x), 20+4 PIN ATX power connector (1x), 4-pin floppy (1x), 4+4-pin 12V (1x), 6+2-pin PCI Express (2x)
Power protection features
EIA, OCP, OPP, OTP, OVP, SCP

General information

Item number
11918093
Manufacturer
be quiet!
Category
Power Supply PC
Manufacturer no.
BN300
Release date
24.7.2019
May include power adapter
Yes

Colour

Colour
Black
Exact colour description
Black

Power supply properties

Form factor
ATX
ATX version
2.51
Efficiency
89%
80 PLUS certificate
Bronze
Modularity
Partially modular cable management
Max. noise level
15 dB

Power supply connectors

Internal connection options
15-pin S-ATA (5x), 20+4 PIN ATX power connector (1x), 4-pin floppy (1x), 4+4-pin 12V (1x), 6+2-pin PCI Express (2x)
Cable length
60 cm

Cooling properties

Cooling method
Active cooling
Number of fans
1x
Fan diameter
120 mm
LED colour
without LED

Safety

Power protection features
EIA, OCP, OPP, OTP, OVP, SCP

Power supply

Power
400 W

Origin

Country of origin
China

Scope of delivery

Scope of delivery
PCIe, SATA

Product dimensions

Length
14 cm
Width
15 cm
Height
8.60 cm
Weight
1490 g

Package dimensions

Length
27 cm
Width
19.80 cm
Height
9.80 cm
Weight
2.08 kg

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Power Supply PC» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 1.HP
    0.3 %
  • 2.be quiet!
    0.9 %
  • 2.Corsair
    0.9 %
  • 4.Fortron
    1 %
  • 5.Seasonic
    1.1 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • 12.Lian-Li
    4 days
  • 12.NZXT
    4 days
  • 15.Seasonic
    6 days
  • 16.be quiet!
    7 days
  • 17.Cooler Master
    10 days

Return rate

How often is a product of this brand in the «Power Supply PC» category returned?

Source: Digitec Galaxus
  • 1.Cooler Master
    2.2 %
  • 2.MSI
    3.3 %
  • 3.be quiet!
    3.7 %
  • 4.Seasonic
    3.8 %
  • 5.Fortron
    4 %
Source: Digitec Galaxus