be quiet! System Power 11 80 PLUS Bronze Power Supply, ATX 3.1, PCIe 5.1 - 450 Watts, black
The be quiet! System Power 11 is an efficient and particularly quiet power supply for budget-conscious PC enthusiasts. With ATX 3.1 support, a modern protection concept, and stable voltage supply, it is ideal for compact gaming and office systems.
- ATX 3.1 power supply with support for PCIe 5.1 graphics cards
- Two PCIe 6+2 connectors for efficient GPU power supply
- Operation with up to 89% efficiency (80 PLUS Bronze)
- Temperature-controlled 120mm fan for quiet operation
- Safety features: OCP, OVP, UVP, SCP, OTP, OPP
Ready for modern hardware and GPUs
The System Power 11 is an ATX form factor power supply with a depth of 140 mm - perfect for powerful desktop PCs and fits into most common cases. With ATX 3.1, you get maximum efficiency and are well-equipped for upcoming hardware - optimised power consumption, faster transient response, and full compatibility with PCIe 5.1. It supports mid-range graphics cards through two PCIe 6+2 connectors and offers high stability in cross-load scenarios.
The power supply is equipped with a single-rail voltage supply and is ideally suited for high-performance hardware, as it consolidates all available power on a single 12V rail and reliably supplies high loads.
The 450-watt power supply reliably and stably powers office, multimedia systems, and small gaming PCs.
Quiet operation in a compact format
Thanks to semi-passive cooling, the fan remains off at idle and only ramps up under increased load, ensuring whisper-quiet operation. The temperature-controlled 120mm fan provides quiet airflow and efficient cooling – ideal for home office, media, and gaming PCs.
The power supply, with its optimised cooling and semi-passive operation, is ideally suited for silent and gaming PCs, as it minimises disruptive fan noise while also providing reliable performance.
Efficiency and protection at a high level
80 PLUS Bronze – Solid efficiency with up to 89% efficiency under typical load at 230V. At the same time, extensive protection circuits reliably guard against voltage spikes, short circuits, and overloads.
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Colour
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Primary Colour
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Black
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Dimensions
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Length / Depth
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140 mm
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Width
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150 mm
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Height
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86 mm
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Fan Specifications
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Fan Size
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120 mm
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Power Supply
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PSU Format
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ATX
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ATX Standard
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ATX 3.1
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12V Distribution
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single rail
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Modular Power Supply
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No
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Protection Circuits
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OCP (Overcurrent Protection), OPP (Overload Protection), OTP (Overtemperature Protection), OVP (Overvoltage and Undervoltage Protection), SCP (Short-Circuit Protection), UVP (Undervoltage Protection)
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Power Specifications
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Total Power Output
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450 W
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Power Output +12V rails
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450 W
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Cable Specifications
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Max. CPU Power Cable Length
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550 mm
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Max. 24-Pin Motherboard Power Cable Length
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600 mm
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Cooling
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Semi Passive Power Supply
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Yes
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Internal Ports
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CPU Power Connectors 12V ATX/EPS
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1
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8 Pin PCIe Power Connectors
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1
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6+2 Pin PCIe Power Connectors
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2
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SATA Power Connectors
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5
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Efficiency Class
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80PLUS Efficiency
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80 PLUS Bronze
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Lighting
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Lighting / RGB
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No
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| Manufacturer Information | LISTAN GmbH Wilhelm-Bergner-Straße 11c, 21509 Glinde, Deutschland |
| Responsible Person | LISTAN GmbH Wilhelm-Bergner-Straße 11c, 21509 Glinde, Deutschland |