be quiet! System Power 10 power supply unit 850 W 20+4 pin ATX ATX Black
be quiet! System Power 10, 850 W, 200 - 240 V, 50 Hz, 5 A, Active, 120 W
| Date | Price |
|---|---|
| 9 March 2026 | £99.99 |
| 14 March 2026 | £98.99 |
| 15 March 2026 | £99.99 |
| 22 March 2026 | £98.99 |
| 22 March 2026 | £99.99 |
| 2 April 2026 | £100.99 |
| 12 April 2026 | £99.99 |
| 17 May 2026 | £100.99 |
| 20 May 2026 | £99.99 |
| 26 May 2026 | £98.99 |
| 28 May 2026 | £99.99 |
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Product Information
PROVEN RELIABILITY, QUIET OPERATION
System Power 10 850W has been built with price-conscious users in mind that do not want to dispense on reliability and quietness. Features such as LLC + SR + DC-to-DC topology and Dual-Rail operation underline the value System Power 10 850W offers even at entry-level.
80 PLUS® GOLD CERTIFICATION
Very high operating efficiency
System Power 10 850W is certified 80 PLUS Gold with an efficiency rating of up to 93.4% – a truly outstanding level for this class of PSUs. The most compelling benefit is lower power consumption, lower costs, and cooler, quieter operation. Whether you are building a very quiet system or gaming system: System Power 10 850W is the price-conscious choice!
EXCEPTIONALLY SILENT OPERATION
Achieved by a silence-optimized 120mm be quiet! fan
The silence-optimized 120mm be quiet! fan is thermally governed to strike the best balance between effective cooling and quietness. Airflow-optimized fan blades reduce turbulence, enabling best-in-class quiet functionality and the almost inaudible operation that be quiet! is famous for.
HIGH-CLASS TECHNOLOGIES
Compatibility for all systems
LLC and Synchronous Rectifier (SR) provide very stable operation and enhanced voltage regulation. The PSU is equipped with DC-to-DC conversion for tight voltage regulation even under heavy cross-loading conditions.
HIGH PERFORMANCE FOR YOUR SYSTEM
Proven reliability for CPU and GPU
System Power 10 850W provides stable and dependable power for CPU and GPU. It is equipped with 2 independent 12V-rails and supports several graphics cards with 4 PCI express connectors for GPU support.
Product
- Name
- be quiet! System Power 10 power supply unit 850 W 20+4 pin ATX ATX Black
- Category
- Power Supply Units
- Brand
- be quiet!
Power
- Total power
- 850 W
- AC input voltage
- 200 - 240 V
- AC input frequency
- 50 Hz
- Input current
- 5 A
- Power factor
- 0.97
- Power Factor Correction (PFC) type
- Active
- Combined power (+3.3V)
- 120 W
- Combined power (+12V)
- 849.6 W
- Combined power (+5V)
- 120 W
- Combined power (-12V)
- 3.6 W
- Combined power (+5Vsb)
- 15 W
- Max output current (+3.3V)
- 22 A
- Max output current (+12V1)
- 40 A
- Max output current (+12V2)
- 36 A
- Max output current (+5V)
- 22 A
- Max output current (-12V)
- 0.3 A
- Max output current (+5Vsb)
- 3 A
- Hold time
- 17 ms
- Efficiency
- 93.4%
- Power Good signal delay range
- 100 - 150 ms
- Power protection features
- Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage
Operational conditions
- Operating temperature (T-T)
- 0 - 40 °C
- Storage temperature (T-T)
- -20 - 70 °C
- Operating relative humidity (H-H)
- 0 - 90%
- Storage relative humidity (H-H)
- 0 - 95%
Weight & dimensions
- Width
- 160 mm
- Depth
- 86 mm
- Height
- 150 mm
- Weight
- 2.14 kg
Ports & interfaces
- Motherboard power connector
- 20+4 pin ATX
- Peripheral (Molex) power connectors (4-pin)
- 1
- Motherboard power cable length
- 55 cm
- Number of SATA power connectors
- 6
- Number of PATA power connectors
- 1
- SATA power cable length
- 450,550,570,670,690,790 mm
- Peripheral (Molex) power cable length
- 790 mm
- EPS power connector (8-pin)
- Yes
- PCI Express power connectors (6+2 pin)
- 4
- PCI Express power cable length
- 65 cm
- CPU power connector (4+4 pin)
- Yes
- CPU power cable length
- 60 cm
- ATX power connector (20+4 pin)
- Yes
- PCI Express connector
- Yes
- Cabling type
- Non-Modular
Packaging data
- Manual
- Yes
- Manual languages
- German, English, Spanish, French, Polish, Russian
- Package width
- 220 mm
- Package depth
- 300 mm
- Package height
- 100 mm
- Package weight
- 2.6 kg
Other features
- Screws included
- Yes
- Noise level (silent mode, <30%)
- 10.3 dB
- Noise level (quiet mode, 50%)
- 10.4 dB
- Noise level (full-load mode, 100%)
- 30.7 dB
Performance
- Purpose
- PC
- Power supply unit (PSU) form factor
- ATX
- 80 PLUS certification
- 80 PLUS Gold
- ATX version
- 2.52
- EPS version
- 2.92
- Noise level
- 30.7 dB
- Bearing technology
- Rifle
- Mean time between failures (MTBF)
- 100000 h
Design
- Product colour
- Black
- Cooling type
- Active
- Fan diameter
- 12 cm
- Number of fans
- 1 fan(s)
- Fan speed
- 0 - 2000 RPM
- On/off switch
- Yes
Logistics data
- Warranty period
- 5 year(s)
- Country of origin
- Germany
Technical details
- Sustainability certificates
- ENERGY STAR, ErP
Certificates
- Compliance certificates
- CCC, CE, Federal Communications Commission (FCC), RoHS, WEEE
- Certification
- CB, TÜV, cRUus, cTUVus, RCM (Australia), BSMI, CU (Russia)
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