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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.
  • 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

Strong 12V Rail
For a stable PCIe graphics support
A PCIe connector provides power for a demanding graphics card. Safety protections defend against overcurrents, over- and undervoltages, short circuits and overloads, thus keeping your valuable components safe.
450 Watts Continuous Power Output
Ensures a steady and reliable operation
SFX Power 3 can deliver 450W of continuous power. This ensures a steady and reliable operation even when your PC meets an unexpectedly heavy load.


Quiet and Efficient Operation
For mini or media PCs
The high-quality temperature-controlled 80mm fan allows quiet operations of max. 29.4dB(A). The 80 PLUS Bronze certification with an efficiency rating of up to 89.2% is convincing evidence of this PSU’s power saving operation.


Weight 1.24 kg


EAN Number


Manufacturer Number



Be Quiet! SFX Power 3


450 W


Fully Wired

#Hide#Wattage Range

450 – 560W

Rail Design

Single Rail

AC Input

AC 100-240 V


Active PFC

Fan Type

High-quality temperature-controlled 80mm fan

Fan Bearing

Rifle Bearing


dB(A) at 20% load: 13.2 dB(A) at 50% load: 13.2 dB(A) at 100% load: 33.8

80+ Certification

80+ Bronze


230V, 20% load: 86.9% 230V, 50% load: 89.3% 230V, 100% load: 85.9%


100,000 hours


Over current Over voltage Under voltage Short circuit Over power

Additional Features

See Overview

Package Contents

PSU Screws Cable ties Manual


0.89 kg 125 x 64 x 100 mm

Package Weight

1.2400 kg


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