Product comparison · 2 power supply units

be quiet! SFX L vs be quiet! Straight Power 11

52specifications compared
29differ
23identical
20known for one product only

Key differences

Total power
- SFX L:500 W
- Straight Power 11:750 W
Peak power
- SFX L:550 W
- Straight Power 11:820 W
Power factor
- SFX L:0.95
- Straight Power 11:0.99
Combined power (+3.3V)
- SFX L:105 W
- Straight Power 11:150 W
Combined power (+12V)
- SFX L:500 W
- Straight Power 11:750 W
Combined power (+5V)
- SFX L:105 W
- Straight Power 11:150 W
Combined power (-12V)
- SFX L:3.6 W
- Straight Power 11:6 W
Max output current (+3.3V)
- SFX L:20 A
- Straight Power 11:25 A

Side by side

Differences highlightedShow differences only

Comparison of SFX L, Straight Power 11
72 specifications	A be quiet! SFX L View product	B be quiet! Straight Power 11 View product
Power11 differ
Total powerDiffers	500 W	750 W
Peak powerDiffers	550 W	820 W
AC input voltage	100 - 240 V	100 - 240 V
AC input frequency	50 - 60 Hz	50 - 60 Hz
Input current	10 A	10 A
Power factorDiffers	0.95	0.99
Power Factor Correction (PFC) type	Active	Active
Combined power (+3.3V)Differs	105 W	150 W
Combined power (+12V)Differs	500 W	750 W
Combined power (+5V)Differs	105 W	150 W
Combined power (-12V)Differs	3.6 W	6 W
Combined power (+5Vsb)	15 W	15 W
Max output current (+3.3V)Differs	20 A	25 A
Max output current (+12V1)Known for one	Unknown — not stated by the source	20 A
Max output current (+12V2)Known for one	Unknown — not stated by the source	20 A
Max output current (+12V3)Known for one	Unknown — not stated by the source	24 A
Max output current (+12V4)Known for one	Unknown — not stated by the source	24 A
Max output current (+5V)Differs	20 A	25 A
Max output current (-12V)Differs	0.3 A	0.5 A
Max output current (+5Vsb)	3 A	3 A
EfficiencyDiffers	92%	93%
Hold timeKnown for one	Unknown — not stated by the source	19.6 ms
Power protection features	Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage	Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage
Max output current (+12V)Known for one	41.7 A	Unknown — not stated by the source
Ports & interfaces3 differ
Motherboard power connector	20+4 pin ATX	20+4 pin ATX
Motherboard power cable lengthDiffers	30 cm	60 cm
Number of PATA power connectorsKnown for one	Unknown — not stated by the source	4
Number of SATA power connectorsDiffers	6	11
SATA power cable lengthDiffers	600,800 mm	550 mm
PCI Express power connectors (6+2 pin)	4	4
PCI Express power cable lengthKnown for one	Unknown — not stated by the source	60 cm
CPU power connector (4+4 pin)	Yes	Yes
CPU power cable lengthKnown for one	Unknown — not stated by the source	70 cm
Floppy disk drive connectorKnown for one	Unknown — not stated by the source	Yes
PCI Express connectorKnown for one	Unknown — not stated by the source	Yes
Cabling type	Fully-Modular	Fully-Modular
Peripheral (Molex) power connectors (4-pin)Known for one	3	Unknown — not stated by the source
Performance2 differ
Purpose	PC	PC
Power supply unit (PSU) form factorDiffers	SFX	ATX
80 PLUS certification	80 PLUS Gold	80 PLUS Gold
ATX version	2.4	2.4
EPS versionKnown for one	Unknown — not stated by the source	2.92
Silent modeKnown for one	Unknown — not stated by the source	Yes
Bearing technologyDiffers	Sleeve	FDB
Mean time between failures (MTBF)Known for one	100000 h	Unknown — not stated by the source
Design1 differ
Product colour	Black	Black
Cooling typeKnown for one	Unknown — not stated by the source	Active
Fan diameterDiffers	12 cm	13.5 cm
Number of fans	1 fan(s)	1 fan(s)
IlluminationKnown for one	Unknown — not stated by the source	No
On/off switch	Yes	Yes
Certificates1 differ
Compliance certificates	RoHS	RoHS
CertificationDiffers	CE, CB, TÜV, FCC, cTUVus, RCM	CE, FCC, TÜV, cTUVus, RCM, BSMI, CU
Weight & dimensions4 differ
WidthDiffers	125 mm	150 mm
DepthDiffers	130 mm	170 mm
HeightDiffers	64 mm	86 mm
WeightDiffers	1.14 kg	1.78 kg
Packaging data4 differ
Manual	Yes	Yes
Package widthDiffers	205 mm	248 mm
Package depthDiffers	220 mm	328 mm
Package heightDiffers	80 mm	102 mm
Package weightDiffers	2.02 kg	3.34 kg
Package typeKnown for one	Box	Unknown — not stated by the source
Technical detailsidentical
Sustainability certificates	ENERGY STAR	ENERGY STAR
Logistics dataidentical
Harmonized System (HS) codeKnown for one	Unknown — not stated by the source	84733020
Other features3 differ
Screws included	Yes	Yes
Cable ties included	Yes	Yes
Noise level (silent mode, <30%)Differs	9.9 dB	8.4 dB
Noise level (quiet mode, 50%)Differs	14 dB	9.01 dB
Noise level (full-load mode, 100%)Differs	28.5 dB	21.23 dB
Cable management	Yes	Yes
Packaging contentidentical
Cables includedKnown for one	AC, PCIe, SATA	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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