Product comparison · 2 power supply units

be quiet! Straight Power 11 vs be quiet! System Power 9

59specifications compared
36differ
23identical
10known for one product only

Key differences

Total power
- Straight Power 11:750 W
- System Power 9:700 W
AC input voltage
- Straight Power 11:100 - 240 V
- System Power 9:200 - 240 V
AC input frequency
- Straight Power 11:50 - 60 Hz
- System Power 9:50 Hz
Input current
- Straight Power 11:10 A
- System Power 9:6 A
Power factor
- Straight Power 11:0.99
- System Power 9:0.95
Combined power (+3.3V)
- Straight Power 11:150 W
- System Power 9:130 W
Combined power (+12V)
- Straight Power 11:750 W
- System Power 9:672 W
Combined power (+5V)
- Straight Power 11:150 W
- System Power 9:130 W

Side by side

Differences highlightedShow differences only

Comparison of Straight Power 11, System Power 9
69 specifications	A be quiet! Straight Power 11 View product	B be quiet! System Power 9 View product
Power16 differ
Total powerDiffers	750 W	700 W
Peak powerKnown for one	820 W	Unknown — not stated by the source
AC input voltageDiffers	100 - 240 V	200 - 240 V
AC input frequencyDiffers	50 - 60 Hz	50 Hz
Input currentDiffers	10 A	6 A
Power factorDiffers	0.99	0.95
Combined power (+3.3V)Differs	150 W	130 W
Combined power (+12V)Differs	750 W	672 W
Combined power (+5V)Differs	150 W	130 W
Combined power (-12V)Differs	6 W	3.6 W
Max output current (+3.3V)Differs	25 A	24 A
Max output current (+12V1)Differs	20 A	33 A
Max output current (+12V2)Differs	20 A	25 A
Max output current (+12V3)Known for one	24 A	Unknown — not stated by the source
Max output current (+12V4)Known for one	24 A	Unknown — not stated by the source
Max output current (+5V)Differs	25 A	15 A
Max output current (-12V)Differs	0.5 A	0.3 A
EfficiencyDiffers	93%	89%
Hold timeDiffers	19.6 ms	17 ms
Ports & interfaces7 differ
Motherboard power cable lengthDiffers	60 cm	55 cm
Number of PATA power connectorsDiffers	4	2
Number of SATA power connectorsDiffers	11	6
SATA power cable lengthDiffers	550 mm	350,550 mm
PCI Express power cable lengthDiffers	60 cm	50 cm
CPU power cable lengthDiffers	70 cm	60 cm
Floppy disk drive connectorKnown for one	Yes	Unknown — not stated by the source
PCI Express connectorKnown for one	Yes	Unknown — not stated by the source
Cabling typeDiffers	Fully-Modular	Non-Modular
Performance2 differ
80 PLUS certificationDiffers	80 PLUS Gold	80 PLUS Bronze
Bearing technologyDiffers	FDB	Sleeve
Design1 differ
Cooling typeKnown for one	Active	Unknown — not stated by the source
Fan diameterDiffers	13.5 cm	12 cm
Certificates1 differ
CertificationDiffers	CE, FCC, TÜV, cTUVus, RCM, BSMI, CU	CE, CB, TÜV, RCM, CU
Weight & dimensions2 differ
DepthDiffers	170 mm	140 mm
WeightDiffers	1.78 kg	2.07 kg
Packaging data4 differ
Package widthDiffers	248 mm	97 mm
Package depthDiffers	328 mm	268 mm
Package heightDiffers	102 mm	195 mm
Package weightDiffers	3.34 kg	2.38 kg
Package typeKnown for one	Unknown — not stated by the source	Box
Other features3 differ
Cable ties includedKnown for one	Yes	Unknown — not stated by the source
Noise level (silent mode, <30%)Differs	8.4 dB	10.6 dB
Noise level (quiet mode, 50%)Differs	9.01 dB	15.4 dB
Noise level (full-load mode, 100%)Differs	21.23 dB	31.7 dB
Cable managementKnown for one	Yes	Unknown — not stated by the source
Packaging contentidentical
Cables includedKnown for one	Unknown — not stated by the source	AC

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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