be quiet! TFX POWER 3 300W PSU Black

be quiet! TFX POWER 3 300W Gold | Compact High-Efficiency PSU

The be quiet! TFX POWER 3 300W Gold power supply unit 20+4 pin ATX Black delivers reliable, efficient power in a compact TFX form factor, making it ideal for mini-ITX and media centre PCs. With 80 PLUS Gold certification and quiet operation, it supports PCIe graphics cards while maintaining solid voltage regulation and low noise levels.

Slim Specs Table

Quiet Operation for Compact Builds

The TFX POWER 3 300W Gold features a single 80mm fan with active cooling that operates at just 21. 7 dB, making it one of the quietest options for small form factor systems. The intelligent fan curve ensures cooling only when needed, reducing noise during light workloads and media playback.

Reliable Power Delivery for Graphics Cards

With a combined +12V output of 288W and a dedicated 6+2 pin PCIe connector, this PSU can handle entry-level dedicated graphics cards. The active Power Factor Correction (PFC) maintains a power factor of 0. 98, ensuring stable voltage delivery even under load fluctuations.

Built-In Protection for System Safety

Comprehensive protection features include over current, over power, over voltage, short circuit, and under voltage protection. These safeguards work together to protect your components from electrical damage, while the 29ms hold-up time ensures stable operation during brief power interruptions.

Check before you buy

• Confirm your case supports TFX (85mm x 175mm x 65mm) form factor
• Verify your graphics card’s power requirements don’t exceed 288W +12V capacity
• Check that your motherboard uses standard 20+4 pin ATX connector
• Confirm you need non-modular cabling for your build

Box contents

• be quiet! TFX POWER 3 300W Gold power supply unit
• Power cables (non-modular)
• Mounting screws
• User manual

Frequently Asked Questions

Q: Can this power supply run a gaming PC?

A: This 300W PSU is designed for compact builds and can support entry-level graphics cards, but is not suitable for high-end gaming systems.

Q: Is this power supply modular?

A: No, the TFX POWER 3 uses non-modular cabling, which means all cables are permanently attached.

Q: What efficiency rating does this PSU have?

A: It has 80 PLUS Gold certification with 90. 6% efficiency at typical loads.

Q: Does this come with all necessary cables?

A: Yes, it includes all standard power cables for TFX systems including ATX, PCIe, SATA, and peripheral connectors.

Q: What are the dimensions of this power supply?

A: The TFX POWER 3 measures 85mm x 175mm x 65mm, making it suitable for compact PC cases.

The Consultant’s verdict & warranty

The be quiet! TFX POWER 3 300W Gold power supply unit 20+4 pin ATX Black is an excellent choice for compact PC builds requiring reliable, efficient power with quiet operation. Its 80 PLUS Gold certification and comprehensive protection features make it suitable for media centres and small form factor systems. Covered by the standard Manufacturer Warranty.