Product comparison · 2 power supply units

be quiet! System Power 8 vs be quiet! System Power B8

43specifications compared
16differ
27identical
17known for one product only

Key differences

Total power
- System Power 8:500 W
- System Power B8:350 W
Input current
- System Power 8:4 A
- System Power B8:3 A
Combined power (+3.3V)
- System Power 8:110 W
- System Power B8:103 W
Combined power (+12V)
- System Power 8:456 W
- System Power B8:324 W
Combined power (+5V)
- System Power 8:110 W
- System Power B8:103 W
Max output current (+3.3V)
- System Power 8:24 A
- System Power B8:19 A
Max output current (+12V1)
- System Power 8:24 A
- System Power B8:20 A
Max output current (+12V2)
- System Power 8:20 A
- System Power B8:16 A

Side by side

Differences highlightedShow differences only

Comparison of System Power 8, System Power B8
60 specifications	A be quiet! System Power 8 View product	B be quiet! System Power B8 View product
Power8 differ
Total powerDiffers	500 W	350 W
Input currentDiffers	4 A	3 A
Combined power (+3.3V)Differs	110 W	103 W
Combined power (+12V)Differs	456 W	324 W
Combined power (+5V)Differs	110 W	103 W
Combined power (-12V)Known for one	3.6 W	Unknown — not stated by the source
Combined power (+5Vsb)Known for one	15 W	Unknown — not stated by the source
Max output current (+3.3V)Differs	24 A	19 A
Max output current (+12V)Known for one	38 A	Unknown — not stated by the source
Max output current (+12V1)Differs	24 A	20 A
Max output current (+12V2)Differs	20 A	16 A
Max output current (+5Vsb)Known for one	3 A	Unknown — not stated by the source
Ports & interfaces2 differ
Number of SATA power connectorsDiffers	6	4
Peripheral (Molex) power connectors (4-pin)Known for one	0	Unknown — not stated by the source
PCI Express power connectors (6+2 pin)Differs	2	1
ATX power connector (20+4 pin)Known for one	Unknown — not stated by the source	Yes
Performanceidentical
Noise levelKnown for one	30.1 dB	Unknown — not stated by the source
Bearing technologyKnown for one	Sleeve	Unknown — not stated by the source
Mean time between failures (MTBF)Known for one	100000 h	Unknown — not stated by the source
Design2 differ
Product colourDiffers	Black	Grey
Fan speedDiffers	2100	1650
Certificates1 differ
CertificationDiffers	CE, CB, TÜV, RCM, CU	ErP, WEEE
Weight & dimensions1 differ
WeightDiffers	1.82 kg	1.6 kg
Packaging dataidentical
Package widthKnown for one	97 mm	Unknown — not stated by the source
Package depthKnown for one	195 mm	Unknown — not stated by the source
Package heightKnown for one	268 mm	Unknown — not stated by the source
Package weightKnown for one	2.17 kg	Unknown — not stated by the source
Package typeKnown for one	Box	Unknown — not stated by the source
Other features2 differ
Noise level (silent mode, <30%)Known for one	15.5 dB	Unknown — not stated by the source
Noise level (quiet mode, 50%)Differs	16.4 dB	12.3 dB
Noise level (full-load mode, 100%)Differs	30.1 dB	24.9 dB
Operational conditionsidentical
Operating temperature (T-T)Known for one	Unknown — not stated by the source	0 - 40 °C
Safety regulation & standardsidentical
SafetyKnown for one	Unknown — not stated by the source	CE, CB, TÜV, RCM, CU

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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