be quiet! · Power Supply Unit

be quiet! System Power 9 | 700W CM price in United Kingdom

MPN BN303EAN 4260052187241

Noise9.7 dB
Weight1.69 kg
ColourBlack
Total power700 W

Lowest price incl. delivery

£83.99

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£83.99at 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! System Power 9 | 700W CM In stockFree shipping
£83.99incl. free shipping
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Best price · Back to the Office£83.99

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Product details

Identification

Brand: be quiet!
Product: System Power 9 | 700W CM
Full name: be quiet! System Power 9 | 700W CM
Manufacturer part number: BN303
EAN / UPC: 4260052187241
Category: Power Supply Unit

66 specifications from the manufacturer's data sheet

Power

Total power	700 W
AC input voltage	200 - 240 V
AC input frequency	50 Hz
Input current	6 A
Power factor	0.95
Power Factor Correction (PFC) type	Active
Combined power (+3.3V)	130 W
Combined power (+12V)	672 W
Combined power (+5V)	130 W
Combined power (-12V)	3.6 W
Combined power (+5Vsb)	15 W
Max output current (+3.3V)	24 A
Max output current (+12V1)	33 A
Max output current (+12V2)	25 A
Max output current (+5V)	15 A
Max output current (-12V)	0.3 A
Max output current (+5Vsb)	3 A
Efficiency	89%
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	55 cm
Number of PATA power connectors	2
Number of SATA power connectors	10
SATA power cable length	550,670 mm
PCI Express power connectors (6+2 pin)	4
PCI Express power cable length	50 cm
CPU power connector (4+4 pin)	Yes
CPU power cable length	60 cm
Floppy drive power connector	1
Cabling type	Semi-Modular

Performance

Purpose	PC
Power supply unit (PSU) form factor	ATX
80 PLUS certification	80 PLUS Bronze
ATX version	2.51
EPS version	2.92
Bearing technology	Sleeve
Compatible products	Intel C6/C7

Design

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

Packaging content

Cables included	PCIe, SATA

Certificates

Compliance certificates	RoHS
Certification	CE, CB, TÜV, RCM, CU

Weight & dimensions

Width	150 mm
Depth	140 mm
Height	86 mm
Weight	1.69 kg

Packaging data

Manual	Yes
Package width	97 mm
Package depth	268 mm
Package height	195 mm
Package weight	2.44 kg
Package type	Box

Technical details

Sustainability certificates	ENERGY STAR

Logistics data

Master (outer) case width	311 mm
Master (outer) case length	215 mm
Master (outer) case height	556 mm
Harmonized System (HS) code	84733020
Master (outer) case gross weight	15.3 kg
Products per master (outer) case	6 pc(s)