Main
Power	450 W
Form factor	ATX


Specs
PFC	active
Efficiency	89 % / 50% load /
Cooling system	active
Fan size	120 mm
Fan bearing	sliding
Certification	80+ Bronze
ATX12V version	3.1
EPS12V version	2.92


Power connectors
MB/CPU power supply	24+8 (4+4) pin
SATA	5
MOLEX	1
PCIe 8pin (6+2)	2
Cable system	non-modular


Cable length
MB	550 mm
CPU	600 mm
SATA	450 mm / 550/570/670/690 /
MOLEX	790 mm
PCIe	500 mm

Max. power
+3.3V	20 А
+5V	20 А
+12V1	37.5 А
-12V	0.3 А
+5Vsb	3 А
+12V	450 W
+3.3V +5V	110 W
-12V	3.6 W
+5Vsb	15 W


General
Over voltage protection (OVP)
Over power protection (OPP)
Short circuit protection (SCP)
Protection	OTP, OCP, UVP, SIP
Noise level	11 dB / 50% load /
Manufacturer's warranty	5 years
Dimensions (HxWxD)	86x150x140 mm
Weight	1.7 kg
Official Website	bequiet.com
Added to E-Catalog	June 2025

E-Catalog UK editor, PSUs

Valerii Lenko, edited 19.01.2026

The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog be quiet! 2026 - new arrivals, bestsellers, and the most relevant models be quiet!.

How to choose a power supply for a PCBasics of choosing a reliable and balanced power supply for your home, office and gaming computer

Buy be quiet! System Power 11 BP009

All prices 16 →

When you make a purchase through links on our site, we may receive a affiliate commission.


	be quiet! System Power 11 450w 80 Plus Bronze ATX 3.1, PCIe 5.1 PSU Power Supply - BP009EU BP009EU The be quiet! System Power 11 450W PSU delivers reliable power with 80 Plus Bronze efficiency, ensuring optimal performance f... moreor your PC build. Featuring ATX 3.1 compatibility and PCIe 5.1 support, it meets the demands of modern hardware. Enjoy stable voltage and low noise levels, making it perfect for gamers and professionals alike. Awd-it.co.uk Delivery: to United Kingdom Report	£43.99 Buy in shop

	be quiet! System Power 11 - 450W 80 Plus Bronze ATX 3.1, Power Supply - Black - BP009EU BP009EU The be quiet! System Power 11 - 450W 80 Plus Bronze ATX 3.1, Power Supply - Black is a power supply designed for quiet, relia... moreble operation and quality construction, an excellent choice for low-noise PC builds. Awd-it.co.uk Delivery: to United Kingdom Report	£43.53 Buy in shop

	be quiet! System Power 11 450W power supply unit 20+4 pin ATX ATX Blac be quiet! System Power 11 450W power supply unit 20+4 pin ATX ATX Black Proven Reliability. Quiet OperationSystem Power 11 45... more0W has been built with value-oriented users in mind that do not want to pass on reliability and quietness. Elaborate features such as ATX 3.1 compatibility and a temperature-controlled fan and a remarkably low stand-by-drain underline the value System Power 11 450W offers even at entry-level. Pcnova.co.uk Delivery: in United Kingdom Report	£45.41 Buy in shop

	be quiet! System Power 11 450W 80PLUS Bronze Fully Wired ATX 3.1 PSU / Scan.co.uk Delivery: to United Kingdom Report	£44.99 Buy in shop

	450W Be Quiet! System Power 11 80 Plus Bronze PSU BP009UK FUTURE-PROOF YOUR SYSTEM Fulfills all ATX 3.1 specifications System Power 11 450W is an ATX 3.1 PSU and handles power excur... moresions up to double its rated power with ease. This makes the PSU versatile and the erfect choice for systems of today and the ones to come. VERY QUIET OPERATION High-quality fan for low noise System Power 11 450W is equipped with a temperature-controlled 120mm quality fan. It provides the low noise operation that be quiet! is famous for, offering remarkable quietness at this price-level. HIGH PERFORMANCE FOR YOUR SYSTEM Proven reliability for CPU and GPU System Power 11 450W 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. 80 PLUS® BRONZE CERTIFICATION Efficient operation The 80 PLUS® Bronze certification of System Power 11 450W Bronze with an efficiency rating of up to 89.0% is convincing evidence of this PSU’s power saving operation. STRONG 12V RAIL For a stable PCIe graphics support System Power 11 450W 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. CCLonline.com Delivery: to United Kingdom Report	£45.99 Buy in shop

11 more offer(s)

Series be quiet! System Power (available)Compare using chart →

be quiet! System Power 11 BP011

from £46.61

650 W, 24+8+4 pin, 2 x 6+2 pin, 1 x 16 pin, SATA 5, Molex 1, ATX, Efficiency 89 %, warranty 5 years

compare

be quiet! System Power 11 BP012

from £48.08

750 W, 24+8+8(4+4) pin, 3 x 6+2 pin, 1 x 16 pin, SATA 6, Molex 1, ATX, Efficiency 89 %, warranty 5 years

compare

be quiet! System Power 11 BP009

from £43.53

450 W, 24+8 (4+4) pin, 2 x 6+2 pin, SATA 5, Molex 1, ATX, Efficiency 89 %, warranty 5 years

compare

be quiet! System Power 11 BP010

from £48.99

550 W, 24+8+4 pin, 2 x 6+2 pin, 1 x 16 pin, SATA 5, Molex 1, ATX, Efficiency 89 %, warranty 5 years

compare

be quiet! System Power 10 BN330

from £170.90

850 W, 24+8+8(4+4) pin, 4 x 6+2 pin, SATA 6, Molex 1, ATX, Efficiency 89 %, certificate 80+ Gold, warranty 5 years

compare

be quiet! System Power 11 configurations


be quiet! System Power 11 BP009	from £43.53	16 offers
be quiet! System Power 11 BP010	from £48.99	8 offers
be quiet! System Power 11 BP011	from £46.61	17 offers
be quiet! System Power 11 BP012	from £48.08	17 offers


	be quiet! System Power 11 [BP009] vs Gigabyte PS-Series [P550SS]

	be quiet! System Power 11 [BP009] vs Deepcool Gamer Storm PF-X [PF500X]

be quiet! System Power 11 BP009

Buy be quiet! System Power 11 BP009

be quiet! System Power 11 450w 80 Plus Bronze ATX 3.1, PCIe 5.1 PSU Power Supply - BP009EU BP009EU

be quiet! System Power 11 - 450W 80 Plus Bronze ATX 3.1, Power Supply - Black - BP009EU BP009EU

be quiet! System Power 11 450W power supply unit 20+4 pin ATX ATX Blac

be quiet! System Power 11 450W 80PLUS Bronze Fully Wired ATX 3.1 PSU /

450W Be Quiet! System Power 11 80 Plus Bronze PSU BP009UK

be quiet! System Power 11 configurations