be quiet! System Power 11 550W

The  be quiet! System Power 11  is a reliable entry-level power supply unit with modern ATX 3.1 specification, PCIe 5.1 support, and proven be quiet! quality. Ideal for high-performance gaming or office systems with current GPU support.

• ATX 3.1 standard – ready for PCIe 5.1 graphics cards
• 1x 12V-2x6 connector (300W) and 2x PCIe 6+2 connectors
• Up to 89.7% efficiency – 80 PLUS Bronze certified
• 120mm be quiet! fan – quiet and temperature-controlled
• Strong 12V rail with stable voltage regulation

Ready for upcoming generations of graphics cards

The System Power 11 is an ATX power supply with a depth of 140mm – ideal for high-performance desktop PCs and compatible with most cases. Thanks to the 12V-2x6 and additional PCIe 6+2 connectors, you can easily power even power-hungry GPUs. This makes the power supply future-proof for gaming and creator systems.With ATX 3.1, you benefit from maximum energy efficiency and a robust power supply – ideal for strong hardware with PCIe 5.1 and 12V-2x6 connectors. The 550-watt power supply provides stable power for office PCs, multimedia systems, and more compact gaming PCs.

Quiet operation in everyday use

The practical Zero-dB mode ensures that the fan remains off under low load and only activates under higher loads. The temperature-controlled 120mm fan provides efficient cooling while operating whisper-quiet – optimal for quiet work environments and gaming without disruptive noise.The power supply is perfectly suited for gamers due to its stable and powerful voltage supply, reliably powering modern graphics cards and processors and delivering consistent performance even under high load.

Efficient and safe

With 80 PLUS Bronze certification, the power supply achieves energy efficiency of up to 89.7% under typical load at 230V. Integrated protection circuits ensure safe power supply for your components.The power supply is equipped with a single-rail voltage supply and is ideal for high-performance hardware, as it consolidates the entire available power on a single 12V rail and reliably supplies high loads.