be quiet! · Power Supply Unit

be quiet! Pure Power 11 300W price in United Kingdom

MPN BN290EAN 4260052186312

Noise10.6 dB
Weight1.76 kg
ColourBlack
Total power300 W

Lowest price incl. delivery

£53.98

at Back to the OfficeIn stock

1 store
1 in stock
Checked 6 Oct 2026, 05:40 UTC

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Full specifications and side-by-side comparison

Prices in United Kingdom

1 store · prices in GBP · updated 6 Oct 2026, 05:40 UTC

Lowest price£53.98at Back to the Office · incl. shippingGo to Back to the Office

Price range across 1 offer

Every store asks the same price.

1 of 1 stores in stock
0 with free shipping
Checked 6 Oct 2026, 05:40 UTC

Back to the OfficeLowest pricebe quiet! Pure Power 11 300W power supply unit 20+4 pin ATX ATX Black In stock£4.99 shipping
£53.98£48.99 + £4.99 shipping
Go to store : Back to the Office (opens in a new tab)

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Best price · Back to the Office£53.98

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Product details

Identification

Brand: be quiet!
Product: Pure Power 11 300W
Full name: be quiet! Pure Power 11 300W power supply unit 20+4 pin ATX ATX Black
Manufacturer part number: BN290
EAN / UPC: 4260052186312
Category: Power Supply Unit

65 specifications from the manufacturer's data sheet

Power

Total power	300 W
Peak power	350 W
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Input current	5 A
Power factor	0.99
Power Factor Correction (PFC) type	Active
Combined power (+3.3V)	103 W
Combined power (+12V)	288 W
Combined power (+5V)	103 W
Combined power (-12V)	3.6 W
Combined power (+5Vsb)	12.5 W
Max output current (+3.3V)	21 A
Max output current (+12V1)	18 A
Max output current (+12V2)	18 A
Max output current (+5V)	15 A
Max output current (-12V)	0.3 A
Max output current (+5Vsb)	2.5 A
Efficiency	87%
Hold time	17 ms
Power protection features	Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage

Ports & interfaces

Motherboard power connector	20+4 pin ATX
Motherboard power cable length	45 cm
Number of PATA power connectors	2
Number of SATA power connectors	4
SATA power cable length	450,600,750 mm
Peripheral (Molex) power connectors (4-pin)	0
PCI Express power connectors (6+2 pin)	1
PCI Express power cable length	50 cm
CPU power connector (4+4 pin)	Yes
CPU power cable length	55 cm
Floppy disk drive connector	Yes
Cabling type	Non-Modular

Performance

Purpose	PC
Power supply unit (PSU) form factor	ATX
80 PLUS certification	80 PLUS Bronze
ATX version	2.4
Bearing technology	Rifle

Design

Product colour	Black
Fan diameter	12 cm
Number of fans	1 fan(s)

Certificates

Compliance certificates	RoHS
Certification	ErP, WEEE

Safety regulation & standards

Safety	CE, TÜV, CU

Weight & dimensions

Width	150 mm
Depth	150 mm
Height	86 mm
Weight	1.76 kg

Packaging data

Manual	Yes
Package width	210 mm
Package depth	240 mm
Package height	96 mm
Package weight	2.05 kg
Package type	Box

Technical details

Sustainability certificates	ENERGY STAR

Logistics data

Master (outer) case width	326 mm
Master (outer) case length	514 mm
Master (outer) case height	241 mm
Master (outer) case gross weight	13.5 kg
Products per master (outer) case	6 pc(s)

Other features

Screws included	Yes
Cable ties included	Yes
Noise level (silent mode, <30%)	10.6 dB
Noise level (quiet mode, 50%)	10.8 dB
Noise level (full-load mode, 100%)	13.2 dB