be quiet! · Power Supply Unit

be quiet! Straight Power 11 1000W Platinum price in United Kingdom

MPN BN309EAN 4260052187401EAN 4260052187524

Noise28.1 dB
Weight1.87 kg
ColourBlack
Total power1000 W

Lowest price incl. delivery

£185.99

at Back to the OfficeFree deliveryIn stock

1 store
1 in stock
1 with free delivery
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£185.99at 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, 05:40 UTC

Back to the OfficeLowest pricebe quiet! Straight Power 11 1000W Platinum power supply unit 20+4 pin ATX ATX Black In stockFree shipping
£185.99incl. free shipping
Go to store : Back to the Office (opens in a new tab)

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Best price · Back to the Office£185.99

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Product details

Identification

Brand: be quiet!
Product: Straight Power 11 1000W Platinum
Full name: be quiet! Straight Power 11 1000W Platinum power supply unit 20+4 pin ATX ATX Black
Manufacturer part number: BN309
EAN / UPC: 4260052187401, 4260052187524
Category: Power Supply Unit

74 specifications from the manufacturer's data sheet

Power

Total power	1000 W
Peak power	1070 W
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Input current	13/6.5 A
Power factor	0.99
Power Factor Correction (PFC) type	Active
Combined power (+3.3V)	150 W
Combined power (+12V)	999.6 W
Combined power (+5V)	150 W
Combined power (-12V)	6 W
Combined power (+5Vsb)	15 W
Max output current (+3.3V)	25 A
Max output current (+12V)	83.3 A
Max output current (+12V1)	22 A
Max output current (+12V2)	22 A
Max output current (+12V3)	30 A
Max output current (+12V4)	30 A
Max output current (+5V)	25 A
Max output current (-12V)	0.5 A
Max output current (+5Vsb)	3 A
Efficiency	94.1%
Hold time	20 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 PATA power connectors	4
Number of SATA power connectors	11
EPS power connector (8-pin)	Yes
EPS power connector (4+4 pin)	Yes
PCI Express power connectors (6+2 pin)	6
PCI Express power cable length	60 cm
Floppy drive power connector	1
Cabling type	Fully-Modular

Performance

Purpose	PC
Power supply unit (PSU) form factor	ATX
80 PLUS certification	80 PLUS Platinum
ATX version	2.51
EPS version	2.92
Noise level	28.1 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)
Fan speed	0 - 2600 RPM
Fan location	Top

Certificates

Compliance certificates	RoHS
Certification	CE, CB, TÜV, FCC, cTUVus, RCM (Australia), BSMI, CU (Russia)

Weight & dimensions

Width	150 mm
Depth	170 mm
Height	86 mm
Weight	1.87 kg

Packaging data

Manual	Yes
Package width	248 mm
Package depth	328 mm
Package height	102 mm
Package weight	3.43 kg
Package type	Box

Technical details

Sustainability certificates	ENERGY STAR

Logistics data

Master (outer) case width	282 mm
Master (outer) case length	651 mm
Master (outer) case height	346 mm
Harmonized System (HS) code	84733020
Master (outer) case gross weight	24 kg

Other features

EPS cable length	70 cm
Screws included	Yes
Cable ties included	Yes
Warranty card	No
Noise level (silent mode, <30%)	7.8 dB
Noise level (quiet mode, 50%)	8 dB
Noise level (full-load mode, 100%)	28.1 dB
Parallel processing technology support	Dual Graphics