be quiet! System Power 11 450W Power Supply Unit

The be quiet! System Power 11 450W (MPN BP009EU) is a reliable, entry-level internal power supply unit (PSU) ideal for mid-range desktop PCs. Certified 80 PLUS Bronze, it delivers stable 450W output with ATX 3.1 compatibility and support for PCIe 5.1 GPUs via two 6+2-pin connectors. Its non-modular design with flat cables provides hassle-free installation and dependable performance.

Key Features

• Power Output: 450W continuous
• Certification: 80 PLUS Bronze (up to 89% efficiency at 230V)
• Compliance: ATX 3.1, EPS 12V v2.92
• PCIe Support: Supports PCIe 5.1 GPUs via 2 x 6+2-pin connectors
• Cooling: Temperature-controlled 120mm rifle-bearing fan
• Protection Features: OCP, OVP, UVP, OPP, OTP, SCP, surge and inrush protection
• Cabling: Fully wired (non-modular) flat black cables
• Warranty: 5-year manufacturer's warranty

Efficient and Reliable Power Delivery

The System Power 11 450W features 80 PLUS Bronze certification, achieving up to 89% efficiency at 50% load with 230V input. This efficiency reduces energy consumption and heat generation, contributing to lower electricity costs and a cooler system. The single 12V rail delivers 37.5A, providing stable power distribution to all components.

ATX 3.1 and PCIe 5.1 Compatibility

Fully compliant with ATX 3.1 and EPS 12V v2.92 standards, this PSU is ready for modern PC builds. The two 6+2-pin PCIe connectors support PCIe 5.1 graphics cards, ensuring compatibility with current and future GPU generations.

Comprehensive Protection System

The BP009EU incorporates multiple protection mechanisms including Over Current Protection (OCP), Over Voltage Protection (OVP), Under Voltage Protection (UVP), Over Power Protection (OPP), Over Temperature Protection (OTP), Short Circuit Protection (SCP), plus surge and inrush protection. These safeguards protect your components from electrical damage.

Quiet Operation

Equipped with a 120mm rifle-bearing fan featuring temperature-controlled operation, the System Power 11 maintains quiet performance. Noise levels range from approximately 10.5 dB(A) at light load to 19.1 dB(A) at full load, ensuring minimal acoustic disturbance during operation.

Full Technical Specification

Model / MPN:
System Power 11 450W (BP009EU)

Form Factor:
ATX

Compliance:
ATX 3.1, EPS 12V v2.92

Power Output:
450W continuous

Efficiency Certification:
80 PLUS Bronze (up to 89% at 50% load)

Input Voltage:
200–240VAC

Input Frequency:
50Hz

Input Current:
Up to 4 A

Power Factor:
= 0.98 at full load

Standby Power:
< 0.15W

Operating Temperature:
0–40 °C

MTBF:
100,000 hours at 25 °C

12V Rail:
Single 12 V rail at 37.5 A

Protections:
OCP, OVP, UVP, OPP, OTP, SCP, surge, inrush

Fan:
120 mm rifle-bearing, temperature-controlled

Noise Level:
~10.5 dB(A) at light load, up to ~19.1 dB(A) at full load

Modularity:
Non-modular

Connectors:
1 x 20+4-pin ATX
1 x 4+4-pin CPU (EPS)
2 x 6+2-pin PCIe
5 x SATA
1 x Molex (4-pin PATA)

Cable Type:
Flat black cables

Cable Length:
Up to 90 cm

Dimensions:
150 mm (W) x 140 mm (D) x 86 mm (H)

Weight:
~1.7 kg

Certifications:
CE, CB, TUV, RoHS, UKCA, WEEE, ErP, Energy Star

Warranty:
5 years

• Wattage: 450W
• Size/Version: ATX 3.1
• Modular: No
• SATA Connections: 5
• Certification: Bronze
• Colour: Black