be quiet! · Power Supply Unit

be quiet! Dark Power Pro 11 price in United Kingdom

MPN BN251MPN BN254MPN BN255EAN 4260052183762EAN 4260052183793

Noise10.4 dB
Weight2.38 kg
ColourBlack
Total power1000 W

Lowest price incl. delivery

£137.99

at Back to the OfficeFree deliveryIn stock

1 store
Range £137.99 – £249.99
Save up to £112.00 vs. the dearest store
1 in stock
1 with free delivery
Checked 6 Oct 2026, 17:41 UTC

Go to Back to the Office See all 5 offers

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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£137.99at Back to the Office · free shippingGo to Back to the Office

Price range across 5 offers

Save up to £112.00 (45%) by choosing the cheapest store

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

Back to the OfficeLowest pricebe quiet! Dark Power Pro 11 power supply unit 550 W 20+4 pin ATX ATX Black In stockFree shipping
£137.99incl. free shipping
Go to store : Back to the Office (opens in a new tab)
Back to the Officebe quiet! Dark Power Pro 11 power supply unit 650 W 20+4 pin ATX ATX Black In stockFree shipping
£146.99incl. free shipping+£9.00 (7%) vs lowest
Go to store : Back to the Office (opens in a new tab)
Back to the Officebe quiet! Dark Power Pro 11 power supply unit 750 W 20+4 pin ATX ATX Black In stockFree shipping
£166.99incl. free shipping+£29.00 (21%) vs lowest
Go to store : Back to the Office (opens in a new tab)
Back to the Officebe quiet! Dark Power Pro 11 power supply unit 850 W 20+4 pin ATX ATX Black In stockFree shipping
£189.99incl. free shipping+£52.00 (38%) vs lowest
Go to store : Back to the Office (opens in a new tab)
Back to the Officebe quiet! Dark Power Pro 11 power supply unit 1200 W 20+4 pin ATX ATX Black In stockFree shipping
£249.99incl. free shipping+£112.00 (81%) vs lowest
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

Price history is being collected. After 14 days of prices we will show whether today's price is good.

Best price · Back to the Office£137.99

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Product details

Identification

Brand: be quiet!
Product: Dark Power Pro 11
Full name: be quiet! Dark Power Pro 11 power supply unit 1000 W 20+4 pin ATX ATX Black
Manufacturer part number: BN251, BN254, BN255, BN253, BN250, BN252
EAN / UPC: 4260052183762, 4260052183793, 4260052183809, 4260052183786, 4260052183755, 4260052183779
Category: Power Supply Unit

49 specifications from the manufacturer's data sheet

Power

Total power	1000 W
Peak power	1100 W
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Input current	14 A
Maximum input current (@110V)	+12V1,+12V2,+12V3,+12V4,+3.3V,+5V,+5Vsb,-12V
Power factor	0.99
Combined power (+3.3V)	25 W
Combined power (+5V)	25 W
Combined power (-12V)	0.5 W
Efficiency	94.1%
Hold time	19.29 ms
Power protection features	Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage

Ports & interfaces

Motherboard power connector	20+4 pin ATX
Number of SATA power connectors	10
Peripheral (Molex) power connectors (4-pin)	7
EPS power connector (8-pin)	Yes
PCI Express power connectors (6-pin)	1
PCI Express power connectors (6+2 pin)	8
CPU power connector (4+4 pin)	Yes
Floppy disk drive connector	Yes
Floppy drive power connector	2
CPU power connectors (8-pin)	1
Cabling type	Semi-Modular