Be Quiet! System Power 11 450W PSU - Reliable Power with Quiet Operation

The Be Quiet! System Power 11 450W delivers proven reliability and quiet operation for value-oriented PC builds. This ATX 3.1 compliant power supply combines 80+ Bronze efficiency with temperature-controlled cooling, making it an excellent choice for modern systems without compromising on quality.

ATX 3.1 and PCIe 5.1 Compatibility

Built to ATX 3.1 specifications, the System Power 11 450W handles power excursions up to double its rated capacity, ensuring compatibility with current and future components. The PSU supports PCIe 5.1 graphics cards alongside traditional 6+2 pin GPU connectors, providing versatility for various system configurations.

Temperature-Controlled 120mm Fan

Equipped with a rifle bearing 120mm fan, this PSU maintains whisper-quiet operation across different load levels. Noise levels range from just 10.5 dB(A) at 10% load to 19.1 dB(A) at full capacity, ensuring your system remains nearly silent during typical use.

80+ Bronze Efficiency

Certified 80+ Bronze with efficiency reaching up to 89.0% at 50% load, the System Power 11 450W reduces energy waste and operating costs. The remarkably low standby drain of less than 0.15 watts further minimizes power consumption when your system is idle.

Strong 12V Rail with DC-to-DC Technology

A single strong 12V rail provides stable power delivery for demanding graphics cards and processors. DC-to-DC technology ensures tight voltage regulation, while comprehensive protection features including OTP, OCP, OPP, SCP, OVP, UVP, and SIP safeguard your valuable components.

Comprehensive Connectivity

The fully wired design includes 1x ATX 20+4-pin motherboard connector, 1x P4+4 CPU connector, 2x PCIe 6+2-pin GPU connectors, 5x SATA connectors, and 1x PATA connector. This configuration supports a wide range of system builds with adequate power for modern components.

Specifications

• Form Factor: ATX
• Series: Be Quiet! System Power 11
• Wattage: 450 W
• Modular: Fully Wired
• Compatibility: ATX 3.1, PCIe 5.1, EPS 12V v2.92
• Connectors: 1x ATX 20+4-pin, 1x P4+4 CPU, 2x PCIe 6+2-pin, 5x SATA, 1x PATA
• Rail Design: Single Strong 12V-rail
• AC Input: 200-240 Vac
• Fan Type: Temperature-controlled 120mm Quality Fan
• Fan Bearing: Rifle Bearing
• Noise: 10% load: 10.5 dB(A), 20% load: 10.6 dB(A), 50% load: 10.8 dB(A), 100% load: 19.1 dB(A)
• Certification: 80+ Bronze
• Efficiency: 230V - 10% load: 82.4%, 20% load: 87.4%, 50% load: 89.0%, 100% load: 85.9%
• MTBF: 100,000 hours
• Protection: OTP, OCP, OPP, SCP, OVP, UVP, SIP
• Package Contents: Power Supply, Screws, Cable Ties, User Manual
• Dimensions: 86 x 150 x 140 mm
• Weight: 1.7 kg
• Warranty: 5 Years

Backed by a 5-year warranty and an MTBF of 100,000 hours, the Be Quiet! System Power 11 450W offers long-term reliability for entry-level to mid-range PC builds requiring dependable, quiet power delivery.