be quiet! SFX L 600W Power Supply

be quiet! SFX L Power 600W | Compact High-Efficiency PSU

The be quiet! SFX L Power power supply unit 600 W 20+4 pin ATX Black delivers exceptional performance for mini ITX and compact gaming systems. This SFX-L form factor PSU combines whisper-quiet operation with 80 PLUS Gold efficiency, making it ideal for space-constrained builds where both power and silence matter.

Whisper-quiet operation for compact systems

The SFX L Power features advanced temperature-controlled fan technology that keeps noise levels exceptionally low. In silent mode, the fan operates at just 9.9 dB, making it one of the quietest SFX power supplies available. This makes it perfect for HTPCs and compact gaming rigs where acoustic performance is crucial. The intelligent fan curve ensures cooling only when needed, maintaining optimal temperatures without unnecessary noise.

Gold-certified efficiency saves energy and money

With 80 PLUS Gold certification and up to 92% efficiency, this PSU significantly reduces wasted energy compared to standard units. The Active Power Factor Correction (PFC) maintains a power factor of 0.99, ensuring clean power delivery and lower electricity bills. For UK users, this efficiency translates to tangible cost savings over time, especially in systems that run for extended periods.

Modular design for clean, organized builds

The fully-modular cabling system allows you to connect only the cables you need, reducing clutter and improving airflow within your compact case. Premium black flat cables are included, making cable management straightforward even in tight spaces. This modularity is particularly valuable in mini ITX builds where every millimeter counts and clean aesthetics matter.

Versatile installation options

The included SFX-to-ATX adapter bracket makes this power supply remarkably flexible. It fits standard SFX cases but can also be installed in larger ATX cases with minimal effort. This versatility means you can use the same high-quality PSU across different system builds, whether you’re upgrading a compact gaming rig or building a new mini PC.

Box contents

• be quiet! SFX L Power 600W PSU
• SFX-to-ATX adapter bracket
• Modular cables
• Mounting screws
• Cable ties
• User manual

Check before you buy

• Confirm your case supports SFX-L form factor (125mm x 130mm x 64mm)
• Verify your GPU requires 4x 6+2 pin PCIe connectors
• Check that your mini ITX motherboard has the required 20+4 pin ATX connector
• Ensure your system power requirements don’t exceed 600W continuous/650W peak

Frequently Asked Questions

Q: Can this PSU fit in a standard ATX case?

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

Q: How many PCIe connectors does it have?

A: It has 4x 6+2 pin PCIe connectors for multi-GPU support.

Q: What’s the noise level at full load?

A: The fan reaches 28.7 dB at 100% load in full-load mode.

Q: Is this PSU suitable for high-end gaming systems?

A: Yes, with 600W continuous power and 50A on the 12V rail, it handles most gaming systems well.

Q: Does it come with all necessary cables?

A: Yes, it includes fully-modular cables for all standard connections including SATA, PCIe, and CPU power.

The Consultant’s verdict & warranty

The be quiet! SFX L Power 600W represents excellent value for users building compact systems where silence, efficiency, and reliability are priorities. Its combination of 80 PLUS Gold efficiency, ultra-low noise operation, and versatile installation options makes it particularly well-suited for mini ITX gaming builds and HTPCs. Covered by the standard Manufacturer Warranty.