Product comparison · 2 power supply units

be quiet! BN128 power supply unit vs Chieftec SPS-750C power supply unit

23specifications compared
13differ
10identical
19known for one product only

Key differences

Total power
- BN128 power supply unit:650 W
- SPS-750C power supply unit:750 W
Max output current (+3.3V)
- BN128 power supply unit:24 A
- SPS-750C power supply unit:25 A
Max output current (+12V)
- BN128 power supply unit:20 A
- SPS-750C power supply unit:60 A
Max output current (+5V)
- BN128 power supply unit:30 A
- SPS-750C power supply unit:25 A
Number of SATA power connectors
- BN128 power supply unit:9
- SPS-750C power supply unit:8
PCI Express power connectors (6+2 pin)
- BN128 power supply unit:2
- SPS-750C power supply unit:4
Cabling type
- BN128 power supply unit:Semi-Modular
- SPS-750C power supply unit:Fully-Modular
Noise level
- BN128 power supply unit:22 dB
- SPS-750C power supply unit:24 dB

Side by side

Differences highlightedShow differences only

Comparison of BN128, SPS-750C
42 specifications	A be quiet! BN128 power supply unit Model BN128 View product	B Chieftec SPS-750C power supply unit Model SPS-750C View product
Power5 differ
Total powerDiffers	650 W	750 W
Peak power	750 W	750 W
AC input voltage	100 - 240 V	100 - 240 V
AC input frequencyKnown for one	50 - 60 Hz	Unknown — not stated by the source
Input currentKnown for one	9 A	Unknown — not stated by the source
Maximum input current (@110V)Known for one	+12V,+12V1,+12V2,+12V3,+12V4,+3.3V,+5V,+5Vsb,-12V	Unknown — not stated by the source
Power Factor Correction (PFC) typeKnown for one	Active	Unknown — not stated by the source
Max output current (+3.3V)Differs	24 A	25 A
Max output current (+12V)Differs	20 A	60 A
Max output current (+5V)Differs	30 A	25 A
Max output current (-12V)	0.5 A	0.5 A
Max output current (+5Vsb)	3 A	3 A
EfficiencyKnown for one	87%	Unknown — not stated by the source
Hold timeKnown for one	19 ms	Unknown — not stated by the source
Power protection featuresDiffers	Over current, Over power, Over voltage, Short circuit, Under voltage, Overheating	Over current, Over voltage, Overload, Short circuit, Under voltage, Overheating
Combined power (+3.3V)Known for one	Unknown — not stated by the source	150 W
Combined power (+12V)Known for one	Unknown — not stated by the source	720 W
Combined power (+5V)Known for one	Unknown — not stated by the source	150 W
Ports & interfaces3 differ
Number of SATA power connectorsDiffers	9	8
PCI Express power connectors (6-pin)Known for one	2	Unknown — not stated by the source
PCI Express power connectors (6+2 pin)Differs	2	4
CPU P4 connector (4-pin)Known for one	1	Unknown — not stated by the source
CPU power connector (4+4 pin)	Yes	Yes
Cabling typeDiffers	Semi-Modular	Fully-Modular
Motherboard power connectorKnown for one	Unknown — not stated by the source	20+4 pin ATX
Peripheral (Molex) power connectors (4-pin)Known for one	Unknown — not stated by the source	4
Floppy drive power connectorKnown for one	Unknown — not stated by the source	1
Performance1 differ
Purpose	PC	PC
Power supply unit (PSU) form factor	ATX	ATX
80 PLUS certification	80 PLUS Silver	80 PLUS Silver
ATX version	2.3	2.3
EPS versionKnown for one	2.92	Unknown — not stated by the source
Noise levelDiffers	22 dB	24 dB
Mean time between failures (MTBF)	100000 h	100000 h
Design2 differ
Product colourDiffers	Black	Red
Fan diameterDiffers	12 cm	14 cm
Fan speedKnown for one	2000	Unknown — not stated by the source
Operational conditionsidentical
Operating temperature (T-T)Known for one	10 - 40 °C	Unknown — not stated by the source
Certificates1 differ
CertificationDiffers	CE, CB	FCC, CE, CB
Compliance certificatesKnown for one	Unknown — not stated by the source	RoHS
Weight & dimensionsidentical
WeightKnown for one	2 kg	Unknown — not stated by the source
Other features1 differ
Dimensions (WxDxH)Differs	86 x 200 x 150 mm	150 x 160 x 87 mm

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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