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be quiet! System Power U9 500W Power Supply

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The be quiet! System Power U9 500W Power Supply is 80PLUS bronze certified with an energy efficiency rating of up to 89%, DC-to-DC conversion for tight voltage regulation, temperature-controlled 120mm fan with low noise operation, and top component protection with a full suite of safety functions.


Very quiet operation

Attained by using a high-quality fan
System Power U9 500W is equipped with a temperature-controlled 120mm fan. It provides you with the low noise operation that be quiet! is famous for, built into an entry-level system.

80 PLUS bronze certification

High operating efficiency
The 80 PLUS Bronze certification is convincing evidence of this PSU’s efficient and power saving operation. It is a remarkable achievement for this class of PSU, realizing an efficiency rating of up to 89%.

High performance for your system

Proven reliability for CPU and GPU
System Power U9 500W provides stable and dependable power for CPU and GPU. It is equipped with two independent 12V-rails and supports several graphics cards with two PCI express connectors for multi-GPU systems.

Innovative DC-to-DC conversion

Equipped with a wealth of advanced technology
The PSU is equipped with DC-to-DC conversion for tight voltage regulation, even under heavy cross-loading conditions. This ensures reliable operation and makes it ready for the next generation of processors and graphics cards.

High-grade black cables

Attractive design for cost-effective systems
System Power U9 500W comes with a high-quality black sleeved 24-pin cable that adds a touch of class to any PC system. The P4+4, PCIe and drives cables are flat.

Comprehensive protection

A complete range of safety features
Top component protection with a full suite of safety functions, including OCP, OVP, OPP, OTP UVP and SCP, which provide the ultimate in secure operation.


Model System Power U9 500W
Continuous power (W) 500
Peak power (W) -
Form factor ATX 12V Version 2.4
Form factor EPS 12V Version 2.92
Modular Cable management -
Topology DC-DC
Wire-free design (DC-side) -
Voltage (Vac) 100 - 240
Frequency (Hz) 50 - 60
Input current (A) 8 / 4
PFC active
Power factor at 100% load >0.95
Compliant to Intel C6/C7 Yes
Power consumption in standby (W) <0.1
Average life time (h / 25°C) 100,000
Operating temperature up to (°C) 40
Backed by a 2 year be quiet! warranty.

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