Product comparison · 2 power supply units

be quiet! Pure Power 11 300W vs be quiet! System Power B9

44specifications compared
17differ
27identical
27known for one product only

Key differences

AC input voltage
- Pure Power 11 300W:100 - 240 V
- System Power B9:200 - 240 V
AC input frequency
- Pure Power 11 300W:50 - 60 Hz
- System Power B9:50 Hz
Input current
- Pure Power 11 300W:5 A
- System Power B9:2.5 A
Power factor
- Pure Power 11 300W:0.99
- System Power B9:0.95
Combined power (+12V)
- Pure Power 11 300W:288 W
- System Power B9:276 W
Max output current (+3.3V)
- Pure Power 11 300W:21 A
- System Power B9:17 A
Max output current (+12V2)
- Pure Power 11 300W:18 A
- System Power B9:14 A
SATA power cable length
- Pure Power 11 300W:450,600,750 mm
- System Power B9:400 mm

Side by side

Differences highlightedShow differences only

Comparison of Pure Power 11 300W, System Power B9
71 specifications	A be quiet! Pure Power 11 300W View product	B be quiet! System Power B9 View product
Power7 differ
Peak powerKnown for one	350 W	Unknown — not stated by the source
AC input voltageDiffers	100 - 240 V	200 - 240 V
AC input frequencyDiffers	50 - 60 Hz	50 Hz
Input currentDiffers	5 A	2.5 A
Power factorDiffers	0.99	0.95
Combined power (+12V)Differs	288 W	276 W
Max output current (+3.3V)Differs	21 A	17 A
Max output current (+12V2)Differs	18 A	14 A
Ports & interfaces2 differ
SATA power cable lengthDiffers	450,600,750 mm	400 mm
Peripheral (Molex) power connectors (4-pin)Known for one	0	Unknown — not stated by the source
PCI Express power connectors (6+2 pin)Known for one	1	Unknown — not stated by the source
PCI Express power cable lengthKnown for one	50 cm	Unknown — not stated by the source
CPU power connector (4+4 pin)Known for one	Yes	Unknown — not stated by the source
CPU power cable lengthDiffers	55 cm	45 cm
Floppy disk drive connectorKnown for one	Yes	Unknown — not stated by the source
CPU P4 connector (4-pin)Known for one	Unknown — not stated by the source	1
Performance1 differ
80 PLUS certificationDiffers	80 PLUS Bronze	80 PLUS
Bearing technologyKnown for one	Rifle	Unknown — not stated by the source
Silent modeKnown for one	Unknown — not stated by the source	Yes
Design1 differ
Product colourDiffers	Black	Grey
IlluminationKnown for one	Unknown — not stated by the source	No
On/off switchKnown for one	Unknown — not stated by the source	Yes
Certificates1 differ
CertificationDiffers	ErP, WEEE	CE, CB, TÜV, RCM, CU
Safety regulation & standardsidentical
SafetyKnown for one	CE, TÜV, CU	Unknown — not stated by the source
Weight & dimensions2 differ
DepthDiffers	150 mm	140 mm
WeightDiffers	1.76 kg	1.52 kg
Packaging dataidentical
ManualKnown for one	Yes	Unknown — not stated by the source
Package widthKnown for one	210 mm	Unknown — not stated by the source
Package depthKnown for one	240 mm	Unknown — not stated by the source
Package heightKnown for one	96 mm	Unknown — not stated by the source
Package weightKnown for one	2.05 kg	Unknown — not stated by the source
Package typeKnown for one	Box	Unknown — not stated by the source
Logistics dataidentical
Master (outer) case widthKnown for one	326 mm	Unknown — not stated by the source
Master (outer) case lengthKnown for one	514 mm	Unknown — not stated by the source
Master (outer) case heightKnown for one	241 mm	Unknown — not stated by the source
Master (outer) case gross weightKnown for one	13.5 kg	Unknown — not stated by the source
Products per master (outer) caseKnown for one	6 pc(s)	Unknown — not stated by the source
Harmonized System (HS) codeKnown for one	Unknown — not stated by the source	84733020
Other features3 differ
Screws includedKnown for one	Yes	Unknown — not stated by the source
Cable ties includedKnown for one	Yes	Unknown — not stated by the source
Noise level (silent mode, <30%)Differs	10.6 dB	11.6 dB
Noise level (quiet mode, 50%)Differs	10.8 dB	12.1 dB
Noise level (full-load mode, 100%)Differs	13.2 dB	23.1 dB
Packaging contentidentical
Cables includedKnown for one	Unknown — not stated by the source	AC

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.