Product comparison · 2 power supply units

be quiet! Pure Power L8 vs Chieftec APS-550SB power supply unit

26specifications compared
14differ
12identical
31known for one product only

Key differences

Total power
- Pure Power L8:300 W
- APS-550SB power supply unit:550 W
AC input voltage
- Pure Power L8:100 - 240 V
- APS-550SB power supply unit:115 - 230 V
Combined power (+3.3V)
- Pure Power L8:103 W
- APS-550SB power supply unit:120 W
Combined power (+5V)
- Pure Power L8:103 W
- APS-550SB power supply unit:120 W
Max output current (+3.3V)
- Pure Power L8:21 A
- APS-550SB power supply unit:22 A
Max output current (+5V)
- Pure Power L8:15 A
- APS-550SB power supply unit:22 A
Motherboard power connector
- Pure Power L8:20+4 pin ATX
- APS-550SB power supply unit:24-pin ATX
Peripheral (Molex) power connectors (4-pin)
- Pure Power L8:2
- APS-550SB power supply unit:3

Side by side

Differences highlightedShow differences only

Comparison of Pure Power L8, APS-550SB
57 specifications	A be quiet! Pure Power L8 View product	B Chieftec APS-550SB power supply unit Model APS-550SB View product
Power7 differ
Total powerDiffers	300 W	550 W
Peak powerKnown for one	350 W	Unknown — not stated by the source
AC input voltageDiffers	100 - 240 V	115 - 230 V
AC input frequency	50 - 60 Hz	50 - 60 Hz
Input currentKnown for one	5 A	Unknown — not stated by the source
Power factorKnown for one	0.97	Unknown — not stated by the source
Power Factor Correction (PFC) type	Active	Active
Combined power (+3.3V)Differs	103 W	120 W
Combined power (+12V)Known for one	276 W	Unknown — not stated by the source
Combined power (+5V)Differs	103 W	120 W
Combined power (-12V)Known for one	3.6 W	Unknown — not stated by the source
Combined power (+5Vsb)Known for one	12.5 W	Unknown — not stated by the source
Max output current (+3.3V)Differs	21 A	22 A
Max output current (+12V1)Known for one	23 A	Unknown — not stated by the source
Max output current (+12V2)Known for one	23 A	Unknown — not stated by the source
Max output current (+5V)Differs	15 A	22 A
Max output current (-12V)	0.3 A	0.3 A
Max output current (+5Vsb)	2.5 A	2.5 A
EfficiencyKnown for one	88%	Unknown — not stated by the source
Hold timeKnown for one	16 ms	Unknown — not stated by the source
Power protection featuresDiffers	Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage	Over current, Over voltage, Overload, Short circuit, Under voltage
Maximum input current (@110V)Known for one	Unknown — not stated by the source	+12V,+3.3V,-12V
Ports & interfaces2 differ
Motherboard power connectorDiffers	20+4 pin ATX	24-pin ATX
Number of SATA power connectorsKnown for one	3	Unknown — not stated by the source
Peripheral (Molex) power connectors (4-pin)Differs	2	3
PCI Express power connectors (6+2 pin)	1	1
CPU power connector (4+4 pin)Known for one	Yes	Unknown — not stated by the source
Floppy drive power connector	1	1
Cabling type	Non-Modular	Non-Modular
EPS power connector (8-pin)Known for one	Unknown — not stated by the source	Yes
ATX Power connector (24-pin)Known for one	Unknown — not stated by the source	Yes
Performance1 differ
Purpose	PC	PC
Power supply unit (PSU) form factor	ATX	ATX
80 PLUS certification	80 PLUS Bronze	80 PLUS Bronze
ATX versionDiffers	2.4	2.3
EPS versionKnown for one	2.92	Unknown — not stated by the source
Noise levelKnown for one	16.6 dB	Unknown — not stated by the source
Mean time between failures (MTBF)	100000 h	100000 h
Design2 differ
Product colourDiffers	Black	Silver
Fan diameterDiffers	12 cm	14 cm
Cooling typeKnown for one	Unknown — not stated by the source	Active
Number of fansKnown for one	Unknown — not stated by the source	1 fan(s)
On/off switchKnown for one	Unknown — not stated by the source	Yes
Certificatesidentical
Compliance certificatesKnown for one	RoHS	Unknown — not stated by the source
CertificationKnown for one	CE, CB, TUV, WEEE	Unknown — not stated by the source
Weight & dimensions2 differ
Width	150 mm	150 mm
DepthDiffers	150 mm	87 mm
HeightDiffers	86 mm	155 mm
WeightKnown for one	1.93 kg	Unknown — not stated by the source
Packaging dataidentical
Package widthKnown for one	105 mm	Unknown — not stated by the source
Package depthKnown for one	230 mm	Unknown — not stated by the source
Package heightKnown for one	280 mm	Unknown — not stated by the source
Package weightKnown for one	2.32 kg	Unknown — not stated by the source
Technical detailsidentical
Sustainability certificatesKnown for one	ENERGY STAR	Unknown — not stated by the source
Other featuresidentical
Noise level (silent mode, <30%)Known for one	13.4 dB	Unknown — not stated by the source
Noise level (quiet mode, 50%)Known for one	13.8 dB	Unknown — not stated by the source
Noise level (full-load mode, 100%)Known for one	16.6 dB	Unknown — not stated by the source

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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