# Power Supply Unit be quiet! System Power 11 450W

**URL:** https://aio.lv/en/product--bequiet-bp009eu--11431558
**Data updated:** 2025-12-04 15:11 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** bequiet!
**Manufacturer code:** BP009EU
**EAN:** 4260052191859
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 52.49 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 43.38 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--bequiet-bp009eu--11431558

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.06.2026 | free |
| Pickup points | 03.07.2026 | 1.99 EUR |
| Courier delivery to door | 03.07.2026 | 4.99 EUR |

## Summary description

The be quiet! System Power 11 450W power supply unit is designed for PC use, featuring a 20+4 pin ATX connector and non-modular cabling. It delivers a total power of 450W with an AC input voltage of 200-240V and a frequency of 50Hz. This ATX form factor PSU is 80 PLUS Bronze certified, ensuring efficient power delivery. The active cooling system with a 12 cm fan ensures optimal performance and reliability. Compliance with CB, CE, RoHS, TÜV, UKCA, and WEEE standards guarantees safety and environmental responsibility.

## Long description

System Power 11 450W is a reliable, value-oriented ATX power supply designed for users seeking quiet operation and stable performance. It supports ATX 3.1 compatibility and includes a temperature-controlled fan to reduce noise during light loads, while maintaining sufficient cooling under higher demand. The unit also features a low standby power draw, making it suitable for energy-conscious builds.
Advantages
Provides dependable power delivery for entry-level and mainstream systems while keeping operating noise low thanks to its temperature-controlled fan. ATX 3.1 compatibility ensures modern safety and performance standards. Low stand-by drain reduces wasted energy when the system is idle.
Key specifications
Model: System Power 11 450W
Wattage: 450 W
Form factor: ATX (ATX 3.1 compatible)
Cooling: temperature-controlled fan
Standby power: low stand-by drain
How to use
Install the System Power 11 450W into a compatible ATX case following the motherboard and case manufacturer instructions. Connect the 24-pin ATX main connector, CPU power connector, and necessary PCIe/SATA/Molex cables to the components. Ensure proper airflow within the case so the temperature-controlled fan operates effectively. Verify all connections before powering on the system.
Recommendations
Use this PSU in entry-level or mainstream desktop builds where ATX 3.1 support and quiet, efficient operation are required. Pair with compatible components and a case that provides adequate airflow to maximize cooling efficiency.

## Specifications

### Power

| Feature | Value |
|---|---|
| Total power | 450 W |
| Efficiency | 89 % |
| Hold time | 16.86 ms |
| Power protection features | Over current, Over power, Over voltage, Overheating, Short circuit, Surge & inrush, Under voltage |
| Power factor | 0.98 |
| Combined power (+3.3V) | 110 W |
| Combined power (+12V) | 450 W |
| Combined power (+5V) | 110 W |
| Combined power (-12V) | 3.6 W |
| Combined power (+5Vsb) | 15 W |
| Max output current (+3.3V) | 20 A |
| Max output current (+5V) | 20 A |
| Max output current (-12V) | 0.3 A |
| Max output current (+5Vsb) | 3 A |
| Input current | 4 |
| AC input frequency | 50 |
| AC input voltage | 200 - 240 |
| Max output current (+12V1) | 37.5 A |

### Ports & interfaces

| Feature | Value |
|---|---|
| Motherboard power connector | 20+4 pin ATX |
| Number of SATA power connectors | 5 |
| Peripheral (Molex) power connectors (4-pin) | 1 |
| CPU power connector (4+4 pin) | Yes |
| PCI Express power connectors (6+2 pin) | 2 |
| Cabling type | Non-Modular |

### Performance

| Feature | Value |
|---|---|
| Purpose | PC |
| 80 PLUS certification | 80 PLUS Bronze |
| Mean time between failures (MTBF) | 100000 h |
| Noise level | 19.1 dB |
| Bearing technology | Rifle |
| ATX version | 3.1 |
| EPS version | 2.92 |
| Power supply unit (PSU) form factor | ATX |

### Design

| Feature | Value |
|---|---|
| Fan diameter | 120 mm |
| Number of fans | 1 fan(s) |
| Cooling type | Active |
| Fan speed | 0 - 1800 |
| On/off switch | Yes |
| Product colour | Black |

### Certificates

| Feature | Value |
|---|---|
| Waste Electrical and Electronic Equipment (WEEE) compliance | Yes |
| Compliance certificates | CB, UKCA, CE, RoHS, TÜV mark, WEEE |

### Technical details

| Feature | Value |
|---|---|
| Sustainability certificates | ENERGY STAR, ErP |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 1.7 kg |
| Height | 140 mm |
| Width | 150 mm |
| Depth | 86 mm |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 2100 g |
| Package depth | 268 mm |
| Package height | 97 mm |
| Package width | 195 mm |
| Package type | Box |

### Other features

| Feature | Value |
|---|---|
| Screws included | Yes |
| Cable ties included | Yes |

### Logistics data

| Feature | Value |
|---|---|
| Shipping (inner) case width | 311 mm |
| Shipping (inner) case length | 556 mm |
| Shipping (inner) case height | 218 mm |
| Shipping (inner) case gross weight | 13600 g |
| Products per shipping (inner) case | 6 pc(s) |

## FAQ

### How much does the Power Supply Unit be quiet! System Power 11 cost, and is it available for purchase?

The price is 52.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 285 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 30.06.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All bequiet! products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized bequiet! service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: total power, efficiency, motherboard power connector, 80 plus certification, fan diameter, weight, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for Power Supply Unit be quiet! System Power 11?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/11431558/66170563_large.webp