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

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	be quiet System Power 11 450W Power Supply ATX 31 PSU With Support For PCIe 51 GPUs Temperature-Controlled 120mm Quality Fan Amazon.co.uk Delivery: in United Kingdom Report	£42.99 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	£42.99 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	£42.98 Buy in shop

	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 PSU 80 PLUS Bronze ATX3.1 PCIe 5.1 Power Supply - Black pa_mpn: 1061, pa_sku: 2232, pa_ean-gtin: 2233, pa_brand: 1587, pa_colour: 117, pa_lighting: 1068 The be quiet! System Power 1... more1 450W (MPN BP009EU) is a reliable, entry-level internal power supply unit (PSU) ideal for mid-range desktop PCs. Certified 80 PLUS Bronze, it delivers stable 450?W output with ATX 3.1 compatibility and support for PCIe 5.1 GPUs via two 6+2-pin connectors. Its non-modular design with flat cables provides hassle-free installation and dependable performance.Key FeaturesPower Output: 450W continuousCertification: 80 PLUS Bronze (up to 89% efficiency at 230?V)Compliance: ATX 3.1, EPS 12V v2.92PCIe Support: Supports PCIe 5.1 GPUs via 2 x 6+2-pin connectorsCooling: Temperature-controlled 120?mm rifle-bearing fanProtection Features: OCP, OVP, UVP, OPP, OTP, SCP, surge and inrush protectionCabling: Fully wired (non-modular) flat black cablesWarranty: 5-year manufacturer's warrantyFull Technical SpecificationModel / MPN:System Power 11 450?W (BP009EU)Form Factor:ATXCompliance:ATX 3.1, EPS 12V v2.92Power Output:450W continuousEfficiency Certification:80 PLUS Bronze (up to 89% at 50% load)Input Voltage:200–240VACInput Frequency:50HzInput Current: Up to 4 APower Factor: = 0.98 at full loadStandby Power: < 0.15?WOperating Temperature: 0–40 °CMTBF:100,000 hours at 25 °C12V Rail: Single 12 V rail at 37.5 AProtections: OCP, OVP, UVP, OPP, OTP, SCP, surge, inrushFan: 120 mm rifle-bearing, temperature-controlledNoise Level: ~10.5 dB(A) at light load, up to ~19.1 dB(A) at full loadModularity: Non-modularConnectors:1 x 20+4-pin ATX1 x 4+4-pin CPU (EPS)2 x 6+2-pin PCIe5 x SATA1 x Molex (4-pin PATA)Cable Type: Flat black cablesCable Length:Up to 90 cmDimensions: 150 mm (W) x 140 mm (D) x 86 mm (H)Weight: ~1.7 kgCertifications: CE, CB, TUV, RoHS, UKCA, WEEE, ErP, Energy StarWarranty: 5 years Alphacores.co.uk Delivery: in United Kingdom Report	£46.18 Buy in shop

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be quiet! System Power 11 BP009	from £42.98	16 offers
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be quiet! System Power 11 BP009

Buy be quiet! System Power 11 BP009

be quiet System Power 11 450W Power Supply ATX 31 PSU With Support For PCIe 51 GPUs Temperature-Controlled 120mm Quality Fan

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

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

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 PSU 80 PLUS Bronze ATX3.1 PCIe 5.1 Power Supply - Black

be quiet! System Power 11 configurations