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Product comparison · 2 power supply units

be quiet! SFX Power vs FSP Zen 400

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  • 20specifications compared
  • 13differ
  • 7identical
  • 33known for one product only

Key differences

  • Total power
    • 350 W
    • 400 W
  • Efficiency
    • 86%
    • 89%
  • Number of SATA power connectors
    • 2
    • 6
  • Peripheral (Molex) power connectors (4-pin)
    • 3
    • 6
  • Power supply unit (PSU) form factor
    • SFX
    • ATX
  • 80 PLUS certification
    • 80 PLUS
    • 80 PLUS Bronze
  • Product colour
    • Black
    • Blue
  • Cooling type
    • Active
    • Passive

Side by side

Differences highlightedShow differences only
53 specifications
A

be quiet!

SFX PowerView product
B

FSP

Zen 400View product
Power3 differ
Total powerDiffers350 W400 W
AC input voltage100 - 240 V100 - 240 V
AC input frequency50 - 60 Hz50 - 60 Hz
Input currentKnown for one3 - 5.5 A
Maximum input current (@110V)Known for one+12V1,+12V2,+3.3V,+5V,+5Vsb,-12V
Power factorKnown for one0.9
Power Factor Correction (PFC) typeActiveActive
Combined power (+3.3V)Known for one125 W
Combined power (+12V)Known for one300 W
Combined power (+5V)Known for one125 W
Max output current (+3.3V)Known for one20 A
Max output current (+12V)Known for one25 A
Max output current (+12V1)Known for one14 A
Max output current (+12V2)Known for one16 A
Max output current (+5V)Known for one22 A
Max output current (-12V)Known for one0.5 A
Max output current (+5Vsb)Known for one2.5 A
EfficiencyDiffers86%89%
Hold timeKnown for one17 ms
Power protection featuresDiffersOver current, Over power, Over voltage, Short circuit, Under voltageOver current, Over voltage, Short circuit
Ports & interfaces2 differ
Motherboard power connector20+4 pin ATX20+4 pin ATX
Number of SATA power connectorsDiffers26
Peripheral (Molex) power connectors (4-pin)Differs36
PCI Express power connectors (6-pin)11
CPU P4 connector (4-pin)Known for one1
Floppy drive power connector11
CPU power connector (4+4 pin)Known for oneYes
ATX power connector (20+4 pin)Known for oneYes
Cabling typeKnown for oneNon-Modular
Performance2 differ
PurposePCPC
Power supply unit (PSU) form factorDiffersSFXATX
80 PLUS certificationDiffers80 PLUS80 PLUS Bronze
Bearing technologyKnown for oneRifle
Mean time between failures (MTBF)Known for one100000 h
ATX versionKnown for one2.2
Noise levelKnown for one0 dB
Design2 differ
Product colourDiffersBlackBlue
Cooling typeDiffersActivePassive
Fan diameterKnown for one8 cm
Number of fansKnown for one1 fan(s)
Fan speedKnown for one4000
On/off switchKnown for oneYes
Operational conditionsidentical
Operating temperature (T-T)Known for one10 - 50 °C
Certificatesidentical
Compliance certificatesKnown for oneRoHS
CertificationKnown for oneCE, CB, TÜV, Nemko (N), Semko (S), Fimko (FI), Demko (D)
Weight & dimensions4 differ
WidthDiffers125 mm160 mm
DepthDiffers100 mm150 mm
HeightDiffers63.5 mm86 mm
WeightDiffers1 kg3.44 kg
Packaging dataidentical
Package weightKnown for one1.27 kg
Technical detailsidentical
Sustainability certificatesKnown for oneENERGY STAR
Other featuresidentical
Package dimensions (WxDxH)Known for one199 x 195 x 75 mm
Safety regulation & standardsidentical
SafetyKnown for oneCB, UL, FCC, CE, TUV, NEMKO, BSMI

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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