be quiet! System Power 11
450 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 450 watts, designed for reliable power delivery to PC systems. With its 80+ Bronze certification, it offers high energy efficiency, reducing power consumption and minimizing heat generation. The power supply is equipped with up to three PCIe 6+2 connectors, ensuring compatibility with current and future graphics cards. An integrated DC/DC converter provides stable voltage regulation, while the 120 mm fan ensures effective cooling while maintaining quiet operation. This power supply is an excellent choice for those who value performance, efficiency, and reliability.
- 80+ Bronze certification for high energy efficiency
- Up to 3 PCIe 6+2 connectors for modern graphics cards
- DC/DC converter for stable voltage regulation
- 120 mm fan for quiet operation and effective cooling.
Form factor | ATX |
80 PLUS certificate | Bronze |
Modularity | Permanently installed |
Internal connection options | 15-pin S-ATA (5x), 20+4 PIN ATX power connector (1x), 4-pin Molex (1x), 4+4-pin 12V (1x), 6+2-pin PCI Express (2x) |
Item number | 57939222 |
Manufacturer | be quiet! |
Category | Power Supply PC |
Product Safety | |
Release date | 22.4.2025 |
Sales rank in Category Power Supply PC | 18 of 2786 |
Colour | Black |
Exact colour description | Black |
Form factor | ATX |
Efficiency | 89 % |
80 PLUS certificate | Bronze |
Modularity | Permanently installed |
Internal connection options | 15-pin S-ATA (5x), 20+4 PIN ATX power connector (1x), 4-pin Molex (1x), 4+4-pin 12V (1x), 6+2-pin PCI Express (2x) |
Cooling method | Active cooling |
Number of fans | 1 x |
Fan diameter | 120 mm |
LED colour | without LED |
Power protection features | EIA, OCP, OPP, OTP, OVP, SCP |
Power | 450 W |
Country of origin | China |
CO₂-Emission | |
Climate contribution |
Scope of delivery | 1 piece |
Length | 8.60 cm |
Width | 15 cm |
Height | 14 cm |
Weight | 1700 g |
Length | 27 cm |
Width | 20 cm |
Height | 10 cm |
Weight | 2.17 kg |
Product Safety |
30-day right of return
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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.Corsair0,9 %
- 3.be quiet!1 %
- 4.Fortron1,1 %
- 4.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- 9.Lian-Li3 days
- 9.NZXT3 days
- 11.ASUS5 days
- 12.be quiet!6 days
- 13.Seasonic7 days
Return rate
How often is a product of this brand in the «Power Supply PC» category returned?
Source: Galaxus- 2.MSI3,3 %
- 3.Enermax3,6 %
- 4.be quiet!3,7 %
- 4.Gigabyte3,7 %
- 6.Thermaltake3,9 %