Product comparison · 2 power supply units

be quiet! System Power 9 vs be quiet! System Power B9

49specifications compared
21differ
28identical
13known for one product only

Key differences

Total power
- System Power 9:700 W
- System Power B9:300 W
Input current
- System Power 9:6 A
- System Power B9:2.5 A
Combined power (+3.3V)
- System Power 9:130 W
- System Power B9:103 W
Combined power (+12V)
- System Power 9:672 W
- System Power B9:276 W
Combined power (+5V)
- System Power 9:130 W
- System Power B9:103 W
Combined power (+5Vsb)
- System Power 9:15 W
- System Power B9:12.5 W
Max output current (+3.3V)
- System Power 9:24 A
- System Power B9:17 A
Max output current (+12V1)
- System Power 9:33 A
- System Power B9:18 A

Side by side

Differences highlightedShow differences only

Comparison of System Power 9, System Power B9
62 specifications	A be quiet! System Power 9 View product	B be quiet! System Power B9 View product
Power11 differ
Total powerDiffers	700 W	300 W
Input currentDiffers	6 A	2.5 A
Combined power (+3.3V)Differs	130 W	103 W
Combined power (+12V)Differs	672 W	276 W
Combined power (+5V)Differs	130 W	103 W
Combined power (+5Vsb)Differs	15 W	12.5 W
Max output current (+3.3V)Differs	24 A	17 A
Max output current (+12V1)Differs	33 A	18 A
Max output current (+12V2)Differs	25 A	14 A
Max output current (+5Vsb)Differs	3 A	2.5 A
EfficiencyDiffers	89%	87%
Ports & interfaces4 differ
Motherboard power cable lengthDiffers	55 cm	45 cm
Number of SATA power connectorsDiffers	6	4
SATA power cable lengthDiffers	350,550 mm	400 mm
PCI Express power connectors (6+2 pin)Known for one	4	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	60 cm	45 cm
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
EPS versionKnown for one	2.92	Unknown — not stated by the source
Bearing technologyKnown for one	Sleeve	Unknown — not stated by the source
Design1 differ
Product colourDiffers	Black	Grey
Weight & dimensions1 differ
WeightDiffers	2.07 kg	1.52 kg
Packaging dataidentical
ManualKnown for one	Yes	Unknown — not stated by the source
Package widthKnown for one	97 mm	Unknown — not stated by the source
Package depthKnown for one	268 mm	Unknown — not stated by the source
Package heightKnown for one	195 mm	Unknown — not stated by the source
Package weightKnown for one	2.38 kg	Unknown — not stated by the source
Package typeKnown for one	Box	Unknown — not stated by the source
Other features3 differ
Screws 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	15.4 dB	12.1 dB
Noise level (full-load mode, 100%)Differs	31.7 dB	23.1 dB

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.

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