Be Quiet! SFX Power 3 450W - Compact Power Supply for Small Form Factor Builds

The Be Quiet! SFX Power 3 450W delivers reliable power in a compact SFX form factor, designed specifically for mini-ITX and small form factor PC builds. This 80+ Bronze certified power supply combines efficient performance with quiet operation, making it an optimal choice for space-constrained systems that don't compromise on quality.

Compact and Silent Energy

SFX Power 3 450W, the first choice compact PSU for mini and media PCs with 80 PLUS® Bronze and PCIe graphics card support. SFX Power 3 450W offers the ideal combination of power, quietness and reliability.

450W Continuous Power Output

This power supply delivers 450W of continuous power on a strong 12V rail, ensuring stable operation even under heavy loads. The single rail design with a 6+2 pin PCIe connector provides adequate power for demanding graphics cards in compact builds, while comprehensive safety protections guard against overcurrents, over- and undervoltages, short circuits, and overloads.

Quiet Operation with Rifle Bearing Fan

The high-quality temperature-controlled 80mm rifle bearing fan maintains quiet operation at just 13.2dB(A) at 20-50% load, reaching a maximum of 33.8dB(A) at full load. This temperature-controlled design ensures the fan only spins as fast as necessary, reducing noise during typical usage scenarios.

80+ Bronze Efficiency

With 80 PLUS Bronze certification achieving up to 89.3% efficiency at 50% load, this PSU reduces energy waste and heat generation. The active PFC design ensures compatibility with AC 100-240V input, making it suitable for worldwide use.

Key Features:

• Strong 12V rail with 450W of continuous power
• 6+2 pin PCIe connector for GPU support
• High-quality temperature-controlled 80mm fan for quiet operation of max. 29.4dB(A)
• Sleeved or flat black cables up to 60cm
• 80 PLUS® Bronze efficiency (up to 89.2%)
• Meets the latest safety and efficiency requirements
• Three-year manufacturer's warranty
• Product conception, design and quality control in Germany

Comprehensive Connectivity

The fully wired cable design includes 1x ATX 20+4-pin motherboard connector, 1x P4+4 CPU connector, 2x PCIe 6+2-pin GPU connectors, 3x SATA, 2x PATA, and 1x FDD connector. Cables extend up to 60cm, providing adequate reach for most SFX cases while maintaining a clean cable management profile.

Compact Dimensions

At just 125 x 64 x 100mm and weighing 0.89kg, this SFX power supply fits seamlessly into compact cases designed for mini-ITX motherboards and small form factor builds. The German-engineered design ensures quality control and reliability backed by a three-year manufacturer's warranty and 100,000 hours MTBF rating.

Description

Specification

• Form Factor: SFX
• Series: Be Quiet! SFX Power 3
• Wattage: 450 W
• Modular: Fully Wired
• #Hide#Wattage Range: 450 - 560W
• Connectors: 1 x ATX-Motherboard (20+4-pin)
  1 x P4+4 (CPU)
  2 x PCI-e 6+2-pin (GPU)
  2 x PATA
  3 x SATA
  1 x FDD (Floppy)
• Rail Design: Single Rail
• AC Input: AC 100-240 V
• PFC: Active PFC
• Fan Type: High-quality temperature-controlled 80mm fan
• Fan Bearing: Rifle Bearing
• Noise: dB(A) at 20% load: 13.2
  dB(A) at 50% load: 13.2
  dB(A) at 100% load: 33.8
• Max Certification: Bronze
• Efficiency: "80+ Bronze
  230V, 20% load: 86.9%
  230V, 50% load: 89.3%
  230V, 100% load: 85.9%"
• MTBF: "100,000 hours"
• Protection: Over current
  Over voltage
  Under voltage
  Short circuit
  Over power
• Additional Features: See Overview
• Package Contents: PSU
  Screws
  Cable ties
  Manual
• Weight/Dimensions: 0.89 kg
  125 x 64 x 100 mm
• Package Weight: 1.2400 kg
• Warranty: 3 Years