Rated Excellent
4.8 star rating
Free delivery over £50
to most of the UK
0% interest for 4 months
on purchases over £99
Custom PCs built fast
delivered in 4-5 days
3 year on-site PC warranty*
including parts & labour

Be Quiet! Pure Power 11 400W 80+ Gold PSU

CCL Code: PSU1634
Manufacturer Code: BN292
| Manufacturer: Be Quiet!

Key Features:

  • 2x Molex Connectors
  • 5x SATA Connectors
  • 2x PCIe Connectors (6+2-Pin)
  • 4 + 4-Pin CPU Power Connector
  • ATX Form Factor

Delivery Options

Tuesday 19th October via Priority DPD

Free Delivery by Friday 22nd October

Collection Options

Tuesday 19th October from Local Collection Point

Was £63.76

SAVE 20%

Now only


inc VAT

Hurry, only 2 left!

Buying in bulk or need help? Email our Business Team.



Pure Power 11 400W offers peerless dependability and best-in-class features. Whether you’re assembling a very quiet system, building a multi-GPU gaming system, or upgrading an existing PC, your build will benefit from this PSU that simply has the best combination of features at a very popular price.


Very high operating efficiency

Pure Power 11 400W is certified 80 PLUS Gold with an efficiency rating of up to 92% – a truly outstanding level for this class of PSU. The most compelling benefit: lower power consumption and consequently lower costs, and cooler, quieter operation.


The best combination of features and performance at a very popular price

Pure Power 11 offers 400W of continuous power with two independent 12V rails for signal stability and two PCI express connectors for multi-GPU systems. It is suited to very quiet systems, for upgrading or building multimedia or multi-GPU gaming systems.


DC-to-DC, Active Clamp and Synchronous Rectifier

The use of Active Clamp and Synchronous Rectifier technologies provides very stable operation. The PSU is equipped with DC-to-DC conversion for even tighter voltage regulation under heavy cross-loading conditions. This ensures secure operation for next generation processors and graphics cards.


Achieved by a silence-optimized 120mm be quiet! fan

The silence-optimized 120mm be quiet! fan is thermally governed to strike the best balance between effective cooling and quietness. Airflow-optimized fan blades reduce turbulence, enabling best-in-class quiet functionality and the almost inaudible operation that be quiet! is famous for. 


Keeping your system tidy and good-looking

Pure Power 400W is exquipped with high-quality sleeved cables that simplify component installation, increase airflow and improve cooling. The All-in-one cable has a convenient easy-plug HDD connector.

Main Features

  • 80 PLUS® Gold efficiency (up to 92%)
  • Two strong 12V-rails
  • Stable operation thanks to Active Clamp and Synchronous Rectifier (SR) technology
  • DC-to-DC conversion for even tighter voltage regulation under heavy cross-loading conditions
  • Silence-optimized 120mm be quiet! fan
  • Full suite of top safety features
  • 5-year manufacturer's warranty


SATA Connectors 5
CPU Connectors 1 x 4+4-pin EPS
PCI Connectors 2 x 6+2-pin PCIe
Motherboard Connectors 1 x 20+4-pin ATX
Molex Connectors 2
Floppy Connectors 1 x Floppy


Standards OCP, OVP, UVP, SCP, OTP, OPP


Voltage 100 ~ 240 VAC
Power 400 W
Frequency Range 50 ~ 60 Hz


Operating Temperature Up to 40 °C


Form Factor ATX Power Supply Unit
Case Colour Black
In The Box Power Supply
Cable Ties
User Manual
Width 150 mm
Depth 150 mm
Height 86 mm
Weight 1.932 kg


Warranty 5 Years

Key Features

Modular Cables No
80Plus Rated 80 Plus Gold
PSU Form Factor ATX
PCI-E Connectors 2
Floppy Connector 1
Motherboard Power Connectors 4 + 4-Pin
PCI-E Pin Type 6+2-Pin
PSU Depth 150 mm
ETA Efficiency Cert. Not Rated
Lambda Noise Cert. Not Rated

Item Details

Manufacturer Be Quiet!
Manufacturer Code BN292
EAN 4260052186336
Condition New

Warranty Information

Warranty 5 Years

Manufacturer Information

Manufacturer Be Quiet!
Manufacturer Code BN292
Questions and Answers

Do you have you a question about the be quiet! Pure Power 11 (400W) 80 Plus Gold Power Supply?

5 / 5 6 reviews


7 months ago

Always bought bequiet supplys, never had any failures.

A. Crease

November 2019

Bought this for a general upgrade with other components. The previous power supply - conventional 600w - was functioning as usual for a month after I bought the Pure Power 11. It's been running for about 6 weeks now (mid Nov 19); very impressed. The noise reduction from a previous power supply is striking. All the high frequency roar / hiss has gone. Plenty of cable length to spare in a midi-tower & wrapping of grouped cables keeps things tidier.


July 2019

This has resulted in a significant reduction in noise. Thanks


July 2019

Perfect PSU for my new system! Ordered from CCL Computers and arrived very early and in perfect condition!


June 2019

Needed this PSU to replace an old (verfy noisy) PSU in a workhorse PC that is used in a quiet office. I decided to try and go for the most quiet PSU possible and this is perfect. The PC is now virtually silent. The cabling on the PSU is a little cumbersome, the cables are all braided (which looks nice, but makes them slightly stiff and bulky), and there are a lot of them, but they do look neat after pursuading them to tuck away correctly. I may opt for a modular PSU next time so I've only got the cables needed. Overall though this is a superb PSU and I would recommend the Be Quiet PSUs for anyone wanting to build a smooth quiet machine. CCL delivered this PSU pretty quickly and it was well packed.

Brendan Blake

May 2019

We should all be trying to reduce the power consumption of our electronics, and this power supply is very quiet and efficient. I've got a reasonably accurate power meter, and with this supply my system uses less than a watt in sleep mode. It also compares well with other efficient supplies I've used when drawing power. Recommended.