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Be Quiet! System Power 9 500W 80+ Bronze PSU

be quiet! System Power 9 500W offers renowned be quiet! reliability and quietness for price-conscious PC builders.

CCL Code: PSU1553
Manufacturer Code: BN246
Manufacturer: Be Quiet!
Be Quiet! System Power 9 500W 80+ Bronze PSU

Proven reliability and good efficiency

Key Features:

  • 2x Molex Connectors
  • 6x SATA Connectors
  • 2x PCIe Connectors (6+2-Pin)
  • 4 + 4-Pin CPU Power Connector
  • ATX Form Factor

Delivery Options (from £4.99)

Tomorrow via DPD Sunday

Wednesday 23rd September via Royal Mail Tracked 24

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Collection Options

Monday 21st September from CCL (BD11 2PS)

Monday 21st September from Local Collection Point


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Attained by using a high-quality fan

System Power 9 500W is equipped with a temperature-controlled 120mm fan. It provides you with the low noise operation that be quiet! is famous for, built into an entry-level system.


High operating efficiency

The 80PLUS® Bronze certification is convincing evidence of this PSU’s efficient and power saving operation. It is a remarkable achievement for this class of PSU, realizing an efficiency rating of up to 89%. 


Proven reliability for CPU and GPU

System Power 9 500W provides stable and dependable power for CPU and GPU. It is equipped with two independent 12V-rails and supports several graphics cards with two PCI express connectors for multi-GPU systems.


Equipped with a wealth of advanced technology

The PSU is equipped with DC-to-DC conversion for tight voltage regulation, even under heavy cross-loading conditions. This ensures reliable operation and makes it ready for the next generation of processors and graphics cards.


Attractive design for high performance, cost-effective systems

System Power 9 500W comes with full high-quality black sleeved cables that add a touch of class to any PC system.


A complete range of safety features

Top component protection with a full suite of safety functions, including OCP, OVP, OPP, OTP UVP and SCP, which provide the ultimate in secure operation.

Main Features

  • Rock-solid stability with two strong 12V-rails
  • DC-to-DC technology for tight voltage regulation
  • Multi-GPU support with two PCIe connectors
  • Temperature-controlled 120mm fan reduces system noise
  • Stand-by drain of less than 0.15 watts
  • 80PLUS® Bronze efficiency (up to 89%)
  • Attractive black sleeved cables
  • Complete suite of top safety features
  • Meets latest Intel® C6/C7, ErP and Energy Star 6.1 guidelines
  • 3-year manufacturer's warranty
  • Product conception, design and quality control in Germany


SATA Connectors 6
CPU Connectors 1 x 4+4-pin ATX12V
PCI Connectors 2 x 6+2-pin PCIe
Motherboard Connectors 1 x 20+4-pin ATX
Molex Connectors 2


Standards OCP / OVP / UVP / SCP / OTP / OPP
Safety CE / CB / TUV / RCM / CU


Voltage 200 ~ 240 VAC
Power 500 W
Frequency Range 50 Hz


Operating Temperature Up to 40 °C


Form Factor 80+ Bronze Certified ATX Power Supply
Case Colour Black
In The Box Power Supply
User Manual
Width 150 mm
Depth 140 mm
Height 86 mm
Weight 1.92 kg


Warranty 3 Years

Key Features

Modular Cables No
80Plus Rated 80 Plus Bronze
PSU Form Factor ATX
PCI-E Connectors 2
Motherboard Power Connectors 4 + 4-Pin
PCI-E Pin Type 6+2-Pin
PSU Depth 140 mm
ETA Efficiency Cert. Not Rated
Lambda Noise Cert. Not Rated

Item Details

Manufacturer Be Quiet!
Manufacturer Code BN246
EAN 4260052186053
Condition New

Warranty Information

Warranty 3 Years

Manufacturer Information

Manufacturer Be Quiet!
Manufacturer Code BN246

Do you have you a question about the be quiet! System Power 9 (500W) Power Supply 80 Plus Bronze?

Q: What is the max wattage for each 12v rail ?
Post Answer
4 / 5 18 reviews

Keith H

3 days ago

Can't hear it under load and great value for the money.


last month

Does what it says on the tin! Nice and quiet, provides power to everything efficiently and for really cheap.


3 months ago

Does exactly what it says on the tin.

Thomas King

3 months ago

Great PSU from a reputable brand for a good price.


3 months ago

As silent as I'd hoped (probably the quietest thing in the computer), it sits there and does it's job... No idea about long term but for the time I've had it it's been fine.


3 months ago

It produces more heat than I expected, but it is quiet.


3 months ago

Good psu would recommend


3 months ago

Hasn't broken yet. Wires are good quality.

Thom Donovan

4 months ago

Please that all the wires are coloured black no, reds or yellows to be seen

Charlie Evans

4 months ago

Does the job absolutely fine

David Webb

4 months ago

Great build quality from Be Quiet, nice heavy unit, silent operation. Nice braided cables for keeping things tidy

ibra 17

4 months ago

well made product!!


6 months ago

This is a really quiet PSU. On switch on it briefly runs the fan , as a test, and that's the last you will hear of it!

Martin Olver

6 months ago

This 500W power supply is a very high quality product for a very reasonable price. Very easily fitted using the supplied screws and it powered up without any problems. I have used similar products from Be Quiet before (fans and power supplies) and as their name implies they are renowned for their very efficient and silent operation. This product is no exception and the overall build quality is extremely high. All the internal leads are insulated with braiding and bunched logically into 6 branches, so connecting it internally is fairly easy, despite the fact it is not a modular design.

Jack Clulow

7 months ago

It works, powers my PC with no issues. Not Modular

Joseph Smith

7 months ago

Incredibly quiet

Wayland Sothcott

8 months ago

There are cheaper 500 watt PSUs but then there are some important compromises. Firstly this one has 2x 6+2 PCIe power connectors so will connect to the most power hungry GPUs. This is a consideration for me. Secondly this PSU easily powers a high power GPU like an old R9 290 or HD5970 without straining. Not all 500 watt PSUs actually meet their rating. This is probably why the cheaper ones don't have the full set of PCIe GPU connectors. It's to try and stop you using them. If you have to spend 5 on a splitter then you may as well have spent the money on a better PSU. You can probably find a cheaper 500 watt PSU that will do what you need but for what I needed the next one up would have been a 650 watt for a lot more money. That makes this one very very good value. You can also tell it's good quality compared to the ones 10 cheaper.

Wayland Sothcott

9 months ago

There are more expensive PSUs than this and there are cheaper ones. Frankly the cheaper ones you'd have to get the 750w version. The more expensive ones have modular cables, which is nice. In most cases you can tuck the unused cables out of the way and save your money for more faster storage. 500 watts will pretty much run any normal computer unless you want two graphics cards or a super high end CPU. I was pleased with the quality of the BeQuiet and it did seem familiar. I reckon it's the same as another decent PSU I have used recently. This is a good choice, just remember it only supports one graphics card.

PDF Datasheets and Manuals

Document File type File size
Datasheet pdf
Manual pdf