be quiet! System Power 11
650 WMore than 10 pieces in stock
Performance4
Product details
The be quiet! System Power 11 is a powerful ATX 3.1 power supply with an output of 650 watts, designed for modern PC systems. It provides reliable power for current and future hardware, including high-performance graphics cards. With an 80+ Bronze certification, this power supply ensures high energy efficiency, leading to lower electricity costs and a more environmentally friendly use. The integrated DC/DC converter technology guarantees stable voltage regulation, while the 120 mm fan ensures effective cooling and enables quiet operation. This power supply is therefore an excellent choice for those who value performance, efficiency, and low noise.
- Up to 3 PCIe 6+2 connectors for current and next-gen GPUs
- 80+ Bronze certified for high energy efficiency
- DC/DC converter for strong voltage regulation
- 120 mm fan for quiet operation and effective cooling.
Form factor | ATX |
ATX version | 3.1 |
Modularity | Permanently installed |
Max. noise level | 30.90 dB |
Internal connection options | 12V-2x6 (1x), 15-pin S-ATA (5x), 20+4 PIN ATX power connector (1x), 4-pin ATX 12V (1x), 4-pin Molex (1x), 4+4-pin 12V (1x), 6+2-pin PCI Express (2x) |
Item number | 57939221 |
Manufacturer | be quiet! |
Category | Power Supply PC |
Manufacturer no. | BP011EU |
Release date | 22.4.2025 |
Sales rank in Category Power Supply PC | 12 of 2749 |
External links |
Colour | Black |
Exact colour description | Black |
Form factor | ATX |
ATX version | 3.1 |
Efficiency | 89.70% |
Modularity | Permanently installed |
Max. noise level | 30.90 dB |
Internal connection options | 12V-2x6 (1x), 15-pin S-ATA (5x), 20+4 PIN ATX power connector (1x), 4-pin ATX 12V (1x), 4-pin Molex (1x), 4+4-pin 12V (1x), 6+2-pin PCI Express (2x) |
Cooling method | Active cooling |
Number of fans | 1x |
Fan diameter | 120 mm |
Power | 650 W |
Country of origin | China |
CO₂-Emission | 279,08 kg |
Climate contribution | EUR 3,38 |
Scope of delivery | 4 fixing screws, Cable ties |
Length | 8.60 cm |
Width | 15 cm |
Height | 14 cm |
Weight | 1970 g |
Product Safety |
Length | 27.50 cm |
Width | 20 cm |
Height | 10 cm |
Weight | 2.43 kg |
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Reviews & Ratings
Statutory warranty score
How often does a product of this brand in the «Power Supply PC» category have a defect within the first 24 months?
Source: Galaxus- 1.HP0,3 %
- 2.be quiet!0,9 %
- 2.Corsair0,9 %
- 4.Fortron1 %
- 5.Seasonic1,1 %
Statutory warranty case duration
How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?
Source: Galaxus- 13.ASUS5 days
- 13.Lian-Li5 days
- 15.Cooler Master6 days
- 16.be quiet!7 days
- 16.Seasonic7 days
Return rate
How often is a product of this brand in the «Power Supply PC» category returned?
Source: Galaxus- 1.Cooler Master2,4 %
- 2.MSI3,4 %
- 3.be quiet!3,8 %
- 4.Gigabyte4,1 %
- 4.Seasonic4,1 %