be quiet! · Power Supply Unit

be quiet! Dark Power Pro 12 1200W price in United Kingdom

MPN BN311EAN 4260052187425

Noise25.8 dB
Weight2.41 kg
ColourBlack
Total power1200 W

Lowest price incl. delivery

£281.41

at PCHUB.UKFree deliveryIn stock

3 stores
Range £281.41 – £345.99
Save up to £64.58 vs. the dearest store
3 in stock
2 with free delivery
Checked 6 Oct 2026, 05:40 UTC

Ad · prices and stock as last reported by the store; the store's checkout is what counts.

Full specifications and side-by-side comparison

Prices in United Kingdom

3 stores · prices in GBP · updated 6 Oct 2026, 05:40 UTC

Lowest price£281.41at PCHUB.UK · free shippingGo to PCHUB.UK

Price range across 3 offers

Save up to £64.58 (19%) by choosing the cheapest store

3 of 3 stores in stock
2 with free shipping
Checked 6 Oct 2026, 05:40 UTC

PCHUB.UKLowest pricebe quiet! Dark Power Pro 12 1200W power supply unit 20+4 pin ATX ATX B In stockFree shipping
£281.41incl. free shipping
Go to store : PCHUB.UK (opens in a new tab)
Back to the Officebe quiet! Dark Power Pro 12 1200W power supply unit 20+4 pin ATX ATX Black In stockFree shipping
£345.99incl. free shipping+£64.58 (23%) vs lowest
Go to store : Back to the Office (opens in a new tab)
PcNova.co.ukbe quiet! Dark Power Pro 12 1200W power supply unit 20+4 pin ATX ATX B In stockShipping not stated
£281.41item price, shipping extra
Go to store : PcNova.co.uk (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, 05:40 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 · PCHUB.UK£281.41

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Product details

Identification

Brand: be quiet!
Product: Dark Power Pro 12 1200W
Full name: be quiet! Dark Power Pro 12 1200W power supply unit 20+4 pin ATX ATX Black
Manufacturer part number: BN311
EAN / UPC: 4260052187425
Category: Power Supply Unit

74 specifications from the manufacturer's data sheet

Power

Total power	1200 W
Peak power	1300 W
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Input current	16 - 8 A
Maximum input current (@110V)	16 A
Maximum input current (@220V)	8 A
Power factor	0.99
Power Factor Correction (PFC) type	Active
Combined power (+3.3V)	150 W
Combined power (+12V)	1200 W
Combined power (+5V)	150 W
Combined power (-12V)	6 W
Combined power (+5Vsb)	17.5 W
Max output current (+3.3V)	25 A
Max output current (+12V)	100 A
Max output current (+12V1)	35 A
Max output current (+12V2)	35 A
Max output current (+12V3)	35 A
Max output current (+12V4)	35 A
Max output current (+5V)	25 A
Max output current (-12V)	0.5 A
Max output current (+5Vsb)	3.5 A
Efficiency	94.7%
Hold time	18.67 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	60 cm
Number of SATA power connectors	16
SATA power cable length	500,550,600,650,750,800,900 mm
Peripheral (Molex) power connectors (4-pin)	8
Peripheral (Molex) power cable length	600,750,900 mm
EPS power connector (8-pin)	Yes
EPS power connector (4+4 pin)	Yes
PCI Express power connectors (6+2 pin)	10
PCI Express power cable length	60 cm
ATX power connector (20+4 pin)	Yes
Floppy disk drive cable length	120 cm
Floppy disk drive connector	Yes
Floppy drive power connector	2
Cabling type	Fully-Modular

Performance

Purpose	PC
Power supply unit (PSU) form factor	ATX
80 PLUS certification	80 PLUS Titanium
ATX version	2.51
EPS version	2.92
Noise level	25.8 dB
Bearing technology	FDB
Mean time between failures (MTBF)	100000 h

Design

Product colour	Black
Cooling type	Active
Fan diameter	13.5 cm
Number of fans	1 fan(s)
On/off switch	Yes

Operational conditions

Operating temperature (T-T)	0 - 50 °C

Packaging content

Cables included	AC, CPU, PCIe, SATA

Certificates

Compliance certificates	RoHS
Certification	ErP, WEEE

Weight & dimensions

Width	150 mm
Depth	200 mm
Height	86 mm
Weight	2.41 kg

Packaging data

Package width	253 mm
Package depth	417 mm
Package height	152 mm
Package weight	6.8 kg
Package type	Box

Technical details

Sustainability certificates	ENERGY STAR

Logistics data

Products per shipping (inner) case	2 pc(s)
Shipping (inner) case gross weight	14.4 kg
Shipping (inner) case height	28.3 cm
Shipping (inner) case length	44 cm
Shipping (inner) case width	32.5 cm
Harmonized System (HS) code	84733020