be quiet! · Power Supply Unit

be quiet! PURE POWER 11 550W FM price in United Kingdom

MPN BN317EAN 4260052188149

Noise18.1 dB
Weight1.45 kg
ColourBlack
Total power550 W

Lowest price incl. delivery

£81.99

at Back to the OfficeFree deliveryIn stock

1 store
1 in stock
1 with free delivery
Checked 6 Oct 2026, 17:41 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, 17:41 UTC

Lowest price£81.99at Back to the Office · free shippingGo to Back to the Office

Price range across 1 offer

Every store asks the same price.

1 of 1 stores in stock
1 with free shipping
Checked 6 Oct 2026, 17:41 UTC

Back to the OfficeLowest pricebe quiet! PURE POWER 11 550W FM power supply unit 20+4 pin ATX ATX Black In stockFree shipping
£81.99incl. free shipping
Go to store : Back to the Office (opens in a new tab)

Ad: we may earn a commission when you buy through these links; it never changes the order, which is by total price only. Prices and stock are shown as each store states them, as of 6 Oct 2026, 17:41 UTC, and can change at any time. Taxes are included only where the store includes them.

Price history in United Kingdom

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Best price · Back to the Office£81.99

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Product details

Identification

Brand: be quiet!
Product: PURE POWER 11 550W FM
Full name: be quiet! PURE POWER 11 550W FM power supply unit 20+4 pin ATX ATX Black
Manufacturer part number: BN317
EAN / UPC: 4260052188149
Category: Power Supply Unit

67 specifications from the manufacturer's data sheet

Power

Total power	550 W
Peak power	600 W
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Input current	10/5 A
Maximum input current (@110V)	10 A
Maximum input current (@220V)	5 A
Power factor	0.98
Power Factor Correction (PFC) type	Active
Combined power (+3.3V)	120 W
Combined power (+12V)	550 W
Combined power (+5V)	120 W
Max output current (+3.3V)	20 A
Max output current (+12V1)	28 A
Max output current (+12V2)	24 A
Max output current (+5V)	20 A
Max output current (-12V)	0.3 A
Max output current (+5Vsb)	3 A
Efficiency	92%
Hold time	17.6 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	55 cm
Number of SATA power connectors	9
SATA power cable length	500,650,800,950 mm
Peripheral (Molex) power connectors (4-pin)	2
Peripheral (Molex) power cable length	800,950 mm
EPS power connector (8-pin)	Yes
EPS power connector (4+4 pin)	Yes
PCI Express power connectors (6+2 pin)	2
PCI Express power cable length	50 cm
Floppy disk drive cable length	110 cm
Floppy disk drive connector	Yes
Floppy drive power connector	1
Cabling type	Fully-Modular

Performance

Purpose	PC
Power supply unit (PSU) form factor	ATX
80 PLUS certification	80 PLUS Gold
ATX version	2.52
EPS version	2.92
Noise level	18.1 dB
Bearing technology	Rifle
Mean time between failures (MTBF)	100000 h

Design

Product colour	Black
Cooling type	Active
Fan diameter	12 cm
Number of fans	1 fan(s)
On/off switch	Yes

Certificates

Compliance certificates	RoHS, WEEE

Safety regulation & standards

Safety	CE, CB, TÜV, FCC, cRUus, cTUVus, RCM, BSMI, CCC

Weight & dimensions

Width	150 mm
Depth	160 mm
Height	86 mm
Weight	1.45 kg

Packaging data

Package width	195 mm
Package depth	298 mm
Package height	97 mm
Package weight	2.86 kg
Package type	Box

Technical details

Sustainability certificates	ENERGY STAR, ErP
Sustainability compliance	Yes

Logistics data

Products per shipping (inner) case	6 pc(s)
Shipping (inner) case gross weight	17.9 kg
Shipping (inner) case height	22.5 cm
Shipping (inner) case length	61.5 cm
Shipping (inner) case width	31.2 cm
Harmonized System (HS) code	84733020

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