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TFX Power 3 300W Bronze: the upgraded be quiet! PSU for mini and media PCs with 80 PLUS® Bronze certification and PCIe graphics card support.

  • Certified 80 PLUS® Bronze efficiency (up to 88.3%)
  • Strong 12V-rail and PCIe graphics support
  • 300W of continuous power
  • One PCI express connector for GPU card support
  • High-quality temperature-controlled 80mm fan for low-noise operation of max. 29.1dB(A)
  • Sleeved or flat black cables up to 60cm long
  • Meets the latest safety and efficiency requirements
  • Standby draw less than 0.14 watts
  • Three-year manufacturer’s warranty
  • Product conception, design and quality control in Germany
80 PLUS® Bronze Certification
Efficient operation
The 80 PLUS Bronze certification of TFX Power 3 300W Bronze with an efficiency rating of up to 88.3% is convincing evidence of this PSU’s power saving operation.
Strong Single 12V Rail
For maximum power
The 12V rail design supports high stability as the CPU receives its power through an independent rail. For demanding peripherals like a graphics card, a PCIe connector is included.  This makes the TFX Power 3 300W Bronze the ideal PSU for all who strive for enough power to support small systems at low noise.
Quiet And Safe
Optimized for low-noise operation
The temperature-controlled fan ensures a quiet operation and produces little wasted heat.  Since TFX Power 3 300W Bronze meets the latest safety requirements, it defends the PC system against overcurrents, over- and undervoltage, short circuit, overloads and comparable failures.


Weight 1.24 kg


EAN Number


Manufacturer Number



Be Quiet! TFX Power 3


300 W


Fully Wired


TFX12V v2.52 & EPS 12V v2.92


1 x ATX-Motherboard (20+4-pin 1 x P4 (CPU) 1 x PCI-e 6+2-pin (GPU) 3 x SATA 2 x PATA 1 x FDD (Floppy)

Rail Design
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: 114.6 dB(A) at 50% load: 15.4 dB(A) at 100% load: 29.1

80+ Certification

80+ Bronze


230V, 20% load: 84% 230V, 50% load: 88.3% 230V, 100% load: 86.4%


100,000 hours


Over current Over voltage Under voltage Short circuit Over Temperature Over Power

Additional Features

See Overview

Package Contents

PSU Screws Cable ties User manual


0.9 kg Without cable (LxWxD): 175 x 85 x 65 mm


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