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Product comparison · 2 power supply units

be quiet! Dark Power Pro 11 vs be quiet! System Power B8

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  • 34specifications compared
  • 21differ
  • 13identical
  • 27known for one product only

Key differences

  • Total power
    • 1000 W
    • 350 W
  • AC input voltage
    • 100 - 240 V
    • 200 - 240 V
  • AC input frequency
    • 50 - 60 Hz
    • 50 Hz
  • Input current
    • 14 A
    • 3 A
  • Power factor
    • 0.99
    • 0.98
  • Combined power (+3.3V)
    • 25 W
    • 103 W
  • Combined power (+5V)
    • 25 W
    • 103 W
  • Efficiency
    • 94.1%
    • 87%

Side by side

Differences highlightedShow differences only
61 specifications
A

be quiet!

Dark Power Pro 11View product
B

be quiet!

System Power B8View product
Power9 differ
Total powerDiffers1000 W350 W
Peak powerKnown for one1100 W
AC input voltageDiffers100 - 240 V200 - 240 V
AC input frequencyDiffers50 - 60 Hz50 Hz
Input currentDiffers14 A3 A
Maximum input current (@110V)Known for one+12V1,+12V2,+12V3,+12V4,+3.3V,+5V,+5Vsb,-12V
Power factorDiffers0.990.98
Combined power (+3.3V)Differs25 W103 W
Combined power (+5V)Differs25 W103 W
Combined power (-12V)Known for one0.5 W
EfficiencyDiffers94.1%87%
Hold timeDiffers19.29 ms18 ms
Power protection featuresOver current, Over power, Over voltage, Overheating, Short circuit, Under voltageOver current, Over power, Over voltage, Overheating, Short circuit, Under voltage
Power Factor Correction (PFC) typeKnown for oneActive
Combined power (+12V)Known for one324 W
Max output current (+3.3V)Known for one19 A
Max output current (+12V1)Known for one20 A
Max output current (+12V2)Known for one16 A
Max output current (+5V)Known for one15 A
Max output current (-12V)Known for one0.3 A
Ports & interfaces3 differ
Motherboard power connector20+4 pin ATX20+4 pin ATX
Number of SATA power connectorsDiffers104
Peripheral (Molex) power connectors (4-pin)Known for one7
EPS power connector (8-pin)Known for oneYes
PCI Express power connectors (6-pin)Known for one1
PCI Express power connectors (6+2 pin)Differs81
CPU power connector (4+4 pin)YesYes
Floppy disk drive connectorKnown for oneYes
Floppy drive power connectorKnown for one2
CPU power connectors (8-pin)Known for one1
Cabling typeDiffersSemi-ModularNon-Modular
Number of PATA power connectorsKnown for one2
ATX power connector (20+4 pin)Known for oneYes
Performance1 differ
PurposePCPC
Power supply unit (PSU) form factorATXATX
80 PLUS certificationDiffers80 PLUS Platinum80 PLUS
ATX version2.42.4
EPS versionKnown for one2.92
Design3 differ
Product colourDiffersBlackGrey
Cooling typeActiveActive
Fan diameterDiffers13.5 cm12 cm
Number of fans1 fan(s)1 fan(s)
Fan speedDiffers18001650
Fan locationKnown for oneTop
On/off switchKnown for oneYes
Certificatesidentical
Compliance certificatesRoHSRoHS
CertificationErP, WEEEErP, WEEE
Safety regulation & standards1 differ
SafetyDiffersCE, CB, TÜV, FCC, cTUVus, RCM, CUCE, CB, TÜV, RCM, CU
Weight & dimensions2 differ
Width150 mm150 mm
DepthDiffers193 mm140 mm
Height86 mm86 mm
WeightDiffers2.38 kg1.6 kg
Packaging dataidentical
Package widthKnown for one305 mm
Package depthKnown for one514 mm
Package heightKnown for one378 mm
Package weightKnown for one4.59 kg
Package typeKnown for oneBox
Technical detailsidentical
Sustainability certificatesENERGY STARENERGY STAR
Other features2 differ
Noise level (quiet mode, 50%)Differs10.4 dB12.3 dB
Noise level (full-load mode, 100%)Differs26.3 dB24.9 dB
Operational conditionsidentical
Operating temperature (T-T)Known for one0 - 40 °C

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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