be quiet! System Power 11 750W PSU

be quiet! System Power 11 750W | Reliable ATX 3.1 Power Supply

The be quiet! System Power 11 750W power supply unit 20+4 pin ATX ATX Black delivers dependable performance for value-conscious PC builders who refuse to compromise on reliability or quiet operation. With ATX 3.1 compatibility and intelligent fan control, this unit offers professional-grade features at an accessible price point.

Slim Specs Table

Proven Reliability for Demanding Systems

Built around a single +12V rail delivering 62.5A, this 750W PSU provides clean, stable power for mid-to-high-end gaming rigs and workstations. The 100,000-hour Mean Time Between Failures rating demonstrates be quiet!’s commitment to long-term reliability, while the 80 PLUS Bronze certification ensures at least 90% efficiency under typical loads, reducing waste heat and electricity costs.

Whisper-Quiet Operation

The temperature-controlled 120mm fan with Rifle bearing technology operates between 0-2100 RPM, adjusting speed based on system load and temperature. At just 33.4 dB under typical conditions, the cooling remains virtually silent during everyday computing tasks, making it ideal for home offices, media centres, and quiet gaming setups where noise reduction matters.

Complete ATX 3.1 and PCIe 5.0 Ready

Featuring ATX 3.1 compliance and a 12-pin PCIe connector, this PSU supports the latest graphics cards including PCIe 5.0 devices. The comprehensive cable set includes six SATA connectors, three 6+2-pin PCIe connectors, and both 4+4-pin and 4-pin CPU power options, providing flexibility for various system configurations without the need for adapters.

Robust Protection and Safety Features

Comprehensive protection circuitry guards against electrical faults that could damage components. Over current, over power, over voltage, overheating, short circuit, surge & inrush, and under voltage protection work together to ensure system safety. The 17.34ms hold-up time maintains power during brief interruptions, while the 4A input current and 0.98 power factor provide stable operation across UK voltage ranges.

Box Contents

• be quiet! System Power 11 750W power supply unit
• Power cable
• Mounting screws
• Cable ties

Check before you buy

• Confirm your case has adequate space for ATX PSU dimensions (150 x 86 x 140mm)
• Verify your graphics card requires a 12-pin PCIe connector for full compatibility
• Check your motherboard’s EPS connector requirements (8-pin or 4+4-pin)
• Ensure your system’s total power draw stays within the 750W capacity

Frequently Asked Questions

Q: Is this PSU compatible with PCIe 5.0 graphics cards?

A: Yes, it includes a 12-pin PCIe connector and meets ATX 3.1 specifications for PCIe 5.0 compatibility.

Q: Can this power supply handle high-end gaming systems?

A: The 750W capacity and 62.5A +12V rail make it suitable for most gaming systems, including those with powerful GPUs.

Q: How noisy is the fan during normal operation?

A: The temperature-controlled fan operates at 33.4 dB under typical loads, remaining quiet during everyday use.

Q: What type of warranty comes with this PSU?

A: This product is covered by the standard manufacturer warranty.

Q: Is the cabling modular or fixed?

A: This is a non-modular PSU with all cables permanently attached.

The Consultant’s verdict & warranty

The be quiet! System Power 11 750W represents excellent value for users building reliable, quiet systems without premium pricing. Its ATX 3.1 compliance, comprehensive protection features, and whisper-quiet operation make it particularly suitable for home office setups, media PCs, and gaming systems where noise reduction matters. The non-modular design simplifies installation while the 750W capacity handles most mid-to-high-end configurations. Covered by the standard Manufacturer Warranty.