be quiet! System Power 11 650W ATX 3.1 PCIe 5.1 PSU
be quiet!
be quiet! System Power 11 650W ATX 3.1 PCIe 5.1 PSU
The be quiet! System Power 11 650W ATX 3.1 PCIe 5.1 PSU is built for budget-conscious PC builders who refuse to sacrifice reliability and quiet operation. It delivers stable 550W continuous power with native support for next-generation graphics cards and temperature-controlled cooling.
Why this product
ATX 3.1 and PCIe 5.1 ready
Native 12V-2x6 connector for next-gen graphics cards, plus three PCIe 6+2 pin slots for current-generation GPUs.
Temperature-controlled 120mm fan
Adjusts fan speed based on load, reducing noise during light work and ramping up only when needed.
80 PLUS Bronze certified
Up to 90.0% efficiency means less wasted energy and lower power bills over time.
5-year warranty
Full manufacturer protection covering defects and failures for five years.
Handles power spikes
Designed to manage excursions up to double rated power, protecting your system during sudden demand.
- Continuous Power550W
- Rating650W
- Efficiency80 PLUS Bronze (up to 90.0%)
- Form FactorATX 3.1
- Fan120mm temperature-controlled
- Warranty5 years
- Input Voltage200–240V AC
- Standby Power Draw<0.1W
- SKUBEQ-772
- EAN4260052191873
- Works with ATX 3.1 motherboards and delivers stable 12V rail power for CPU and GPU simultaneously.
- Supports PCIe 5.1 graphics cards via native 12V-2x6 connector and PCIe 6+2 pin connectors for current-gen cards.
- Fits standard ATX cases with 550W continuous power suitable for mid-range gaming and productivity builds.
- Operates reliably up to 40°C ambient temperature; thermal performance degrades in hotter environments.
- Not suitable for systems with dual high-end graphics cards or extreme overclocking requiring sustained power above 550W.
Best for
- Budget builders wanting next-gen GPU support without overpaying for excess wattage.
- Quiet PC builds that need temperature-controlled cooling to minimize fan noise during light loads.
- Mid-range gaming rigs and workstation PCs with single GPUs and stable power draw.
- Users prioritising long-term reliability with a five-year warranty and proven German engineering.
Trade-offs
- High-wattage systems. At 550W continuous output, it cannot sustain dual-GPU setups or heavily overclocked single-card systems.
- Extreme efficiency seekers. 80 PLUS Bronze certification (90% max) trails Gold and Platinum models by 3–5 percentage points.
- Digital monitoring needs. The unit is not digitally controlled, so no real-time power telemetry via software.
System Power 11 650W has been built with value-oriented users in mind that do not want to pass on reliability and quietness. Elaborated features such as ATX 3.1 compatibility and a temperature-controlled fan underline the value System Power 11 650W offers even at entry-level.
System Power 11 650W is an ATX 3.1 PSU and comes with both native integration of the 12V-2x6 connector for next-generation PCIe 5.1 graphics cards, and PCIe 6+2-pin connectors for support of current-gen GPUs. It handles power excursions up to double its rated power with ease. This makes the PSU versatile and the perfect choice for systems of today and the ones to come.
System Power 11 650W is equipped with a temperature-controlled 120mm quality fan.
System Power 11 650W provides stable and dependable power for CPU and GPU. This ensures a steady and reliable operation even when your PC meets an unexpectedly heavy load.
The 80 PLUS® Bronze certification of System Power 11 650W Bronze with an efficiency rating of up to 89.7% is convincing evidence of this PSU's power saving operation.
System Power 11 650W provides enough power for demanding graphics cards. Safety protections defend against overcurrents, over- and undervoltages, overtemperature, short circuits and overloads, thus keeping your valuable components safe.
General
| Brand | be quiet! |
|---|---|
| Model | System Power 11 650W |
| Form Factor | ATX 3.1 |
Power Output
| Continuous Power | 550W |
|---|---|
| Topology | Double forward + DC-DC |
| 12V Rail Power Factor | >0.98 |
| Standby Power Draw | <0.1W |
Connectivity & GPU Support
| PCIe 5.1 Connector | One 12V-2x6 (600W) |
|---|---|
| PCIe 6+2 Pin Connectors | Up to 3 |
| EPS 12V Standard | Version 2.92 |
Efficiency & Protection
| Certification | 80 PLUS Bronze |
|---|---|
| Peak Efficiency | Up to 90.0% |
| Input Voltage Range | 200–240V AC |
| Input Frequency | 50 Hz |
| Input Current | 5A |
| Max Operating Temperature | 40°C |
| Mean Time Between Failures | >100,000 hours at 25°C |
Cooling & Warranty
| Fan Size | 120mm |
|---|---|
| Fan Control | Temperature-controlled |
| Warranty | 5-year manufacturer's warranty |
Shipping
All our products are shipped from the United Kingdom within 24 to 48 hours of purchase. See our Shipping and Returns page for full details.
Returns
- Tech Syndicate offers a full money-back guarantee on all purchases made in our store. If you are not satisfied with your purchase, we will provide a full refund, no questions asked.
- Refunds are available within 45 days of delivery.
- After the 45-day period you are no longer eligible for a refund, so we encourage you to try the product within the first few weeks to make sure it fits your needs.