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Product comparison · 2 power supply units

be quiet! System Power 9 vs be quiet! System Power B9

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  • 49specifications compared
  • 21differ
  • 28identical
  • 13known for one product only

Key differences

  • Total power
    • 700 W
    • 300 W
  • Input current
    • 6 A
    • 2.5 A
  • Combined power (+3.3V)
    • 130 W
    • 103 W
  • Combined power (+12V)
    • 672 W
    • 276 W
  • Combined power (+5V)
    • 130 W
    • 103 W
  • Combined power (+5Vsb)
    • 15 W
    • 12.5 W
  • Max output current (+3.3V)
    • 24 A
    • 17 A
  • Max output current (+12V1)
    • 33 A
    • 18 A

Side by side

Differences highlightedShow differences only
62 specifications
A

be quiet!

System Power 9View product
B

be quiet!

System Power B9View product
Power11 differ
Total powerDiffers700 W300 W
AC input voltage200 - 240 V200 - 240 V
AC input frequency50 Hz50 Hz
Input currentDiffers6 A2.5 A
Power factor0.950.95
Power Factor Correction (PFC) typeActiveActive
Combined power (+3.3V)Differs130 W103 W
Combined power (+12V)Differs672 W276 W
Combined power (+5V)Differs130 W103 W
Combined power (-12V)3.6 W3.6 W
Combined power (+5Vsb)Differs15 W12.5 W
Max output current (+3.3V)Differs24 A17 A
Max output current (+12V1)Differs33 A18 A
Max output current (+12V2)Differs25 A14 A
Max output current (+5V)15 A15 A
Max output current (-12V)0.3 A0.3 A
Max output current (+5Vsb)Differs3 A2.5 A
EfficiencyDiffers89%87%
Hold time17 ms17 ms
Power protection featuresOver current, Over power, Over voltage, Overheating, Short circuit, Under voltageOver current, Over power, Over voltage, Overheating, Short circuit, Under voltage
Ports & interfaces4 differ
Motherboard power connector20+4 pin ATX20+4 pin ATX
Motherboard power cable lengthDiffers55 cm45 cm
Number of PATA power connectors22
Number of SATA power connectorsDiffers64
SATA power cable lengthDiffers350,550 mm400 mm
PCI Express power connectors (6+2 pin)Known for one4
PCI Express power cable lengthKnown for one50 cm
CPU power connector (4+4 pin)Known for oneYes
CPU power cable lengthDiffers60 cm45 cm
Cabling typeNon-ModularNon-Modular
CPU P4 connector (4-pin)Known for one1
Performance1 differ
PurposePCPC
Power supply unit (PSU) form factorATXATX
80 PLUS certificationDiffers80 PLUS Bronze80 PLUS
ATX version2.42.4
EPS versionKnown for one2.92
Silent modeYesYes
Bearing technologyKnown for oneSleeve
Design1 differ
Product colourDiffersBlackGrey
Fan diameter12 cm12 cm
Number of fans1 fan(s)1 fan(s)
IlluminationNoNo
On/off switchYesYes
Packaging contentidentical
Cables includedACAC
Certificatesidentical
Compliance certificatesRoHSRoHS
CertificationCE, CB, TÜV, RCM, CUCE, CB, TÜV, RCM, CU
Weight & dimensions1 differ
Width150 mm150 mm
Depth140 mm140 mm
Height86 mm86 mm
WeightDiffers2.07 kg1.52 kg
Packaging dataidentical
ManualKnown for oneYes
Package widthKnown for one97 mm
Package depthKnown for one268 mm
Package heightKnown for one195 mm
Package weightKnown for one2.38 kg
Package typeKnown for oneBox
Technical detailsidentical
Sustainability certificatesENERGY STARENERGY STAR
Logistics dataidentical
Harmonized System (HS) code8473302084733020
Other features3 differ
Screws includedKnown for oneYes
Noise level (silent mode, <30%)Differs10.6 dB11.6 dB
Noise level (quiet mode, 50%)Differs15.4 dB12.1 dB
Noise level (full-load mode, 100%)Differs31.7 dB23.1 dB

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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