be quiet! SFX L 500W PSU

be quiet! SFX L Power 500W | Compact Silent PSU for Mini-ITX Builds

The be quiet! SFX L Power power supply unit 500 W 20+4 pin ATX Black delivers reliable, efficient power in a compact form factor ideal for Mini-ITX and small-form-factor gaming PCs. With 80 PLUS Gold certification and fully modular cabling, it balances performance with quiet operation.

Slim Specs Table

Compact Design for Mini-ITX Systems

The SFX L Power is engineered specifically for compact builds where space is at a premium. At just 125 mm wide, 130 mm deep, and 64 mm high, it fits seamlessly into Mini-ITX cases while providing ample power for modern components. The included SFX-to-ATX adapter bracket adds versatility, allowing installation in standard ATX cases when needed.

Exceptional Quiet Operation

Operating at just 9.9 dB in silent mode, this PSU is one of the quietest in its class. The temperature-controlled 120 mm fan adjusts its speed based on system load, maintaining near-silent operation during light tasks while scaling up only when necessary. This makes it perfect for HTPCs and media centres where noise reduction is paramount.

Gold-Rated Efficiency Saves Energy

With 80 PLUS Gold certification and up to 92% efficiency, the SFX L Power reduces wasted energy and heat output. This translates to lower electricity bills and cooler system operation. The Active Power Factor Correction (PFC) maintains a 0.99 power factor, ensuring clean power delivery to your components.

Fully Modular Cable Management

The fully modular design lets you connect only the cables you need, reducing clutter and improving airflow within your compact case. Premium black flat cables are easy to route and keep your build looking clean and professional. Six SATA connectors and four PCIe 6+2 pin connectors provide ample connectivity for storage and graphics cards.

Reliable Power Delivery

A stable 12V rail, high-quality Japanese capacitors, and advanced technologies like LLC, Synchronous Rectifier, and DC-to-DC conversion ensure consistent, clean power delivery. The PSU includes comprehensive protection features: over current, over power, over voltage, overheating, short circuit, and under voltage protection.

Box contents

• be quiet! SFX L Power 500W PSU
• SFX-to-ATX adapter bracket
• Modular cables
• Mounting screws
• Cable ties
• User manual

Check before you buy

• Confirm your case supports SFX or has space for the SFX-to-ATX adapter
• Verify your GPU power requirements match the available PCIe connectors
• Check that your motherboard’s 20+4 pin ATX connector is within 30 cm of the PSU
• Confirm your system’s total power draw stays within the 500 W continuous rating

Frequently Asked Questions

Q: Can this PSU power a high-end gaming PC?

A: Yes, with 500 W continuous power and 550 W peak, it can handle most gaming systems with a single GPU or dual mid-range cards.

Q: Is this PSU suitable for overclocking?

A: The stable 12V rail and quality components make it suitable for moderate overclocking within its power limits.

Q: How many PCIe connectors does it have?

A: It includes four PCIe 6+2 pin connectors for graphics card support.

Q: Can I use this in a standard ATX case?

A: Yes, the included SFX-to-ATX adapter bracket allows installation in ATX cases.

The Consultant’s verdict & warranty

The be quiet! SFX L Power 500W is an excellent choice for Mini-ITX builders seeking reliable, quiet power in a compact package. Its 80 PLUS Gold efficiency, fully modular design, and comprehensive protection features make it ideal for compact gaming systems and HTPCs. Covered by the standard Manufacturer Warranty.