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Product comparison · 2 power supply units

be quiet! SFX Power 2 vs FSP TX-400PAF power supply unit

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  • 27specifications compared
  • 15differ
  • 12identical
  • 35known for one product only

Key differences

  • AC input voltage
    • 110 - 240 V
    • 230 V
  • Combined power (+3.3V)
    • 120 W
    • 180 W
  • Combined power (+12V)
    • 360 W
    • 348 W
  • Combined power (+5V)
    • 120 W
    • 180 W
  • Max output current (+3.3V)
    • 21 A
    • 28 A
  • Max output current (+5V)
    • 22 A
    • 30 A
  • Number of SATA power connectors
    • 4
    • 2
  • Peripheral (Molex) power connectors (4-pin)
    • 1
    • 6

Side by side

Differences highlightedShow differences only
62 specifications
A

be quiet!

SFX Power 2View product
B

FSP

TX-400PAF power supply unit

Model TX-400PAF

View product
Power8 differ
Total power400 W400 W
Peak powerKnown for one450 W
AC input voltageDiffers110 - 240 V230 V
AC input frequencyKnown for one50 - 60 Hz
Input currentKnown for one6 A
Maximum input current (@110V)Differs+12V1,+12V2,+3.3V,+5V,+5Vsb,-12V+12V,+3.3V,+5V,+5Vsb,-12V
Power factorKnown for one0.9
Power Factor Correction (PFC) typeActiveActive
Combined power (+3.3V)Differs120 W180 W
Combined power (+12V)Differs360 W348 W
Combined power (+5V)Differs120 W180 W
Combined power (-12V)Known for one6 W
Combined power (+5Vsb)Known for one12.5 W
Max output current (+3.3V)Differs21 A28 A
Max output current (+12V1)Known for one17 A
Max output current (+12V2)Known for one16 A
Max output current (+5V)Differs22 A30 A
Max output current (-12V)0.5 A0.5 A
Max output current (+5Vsb)Known for one2.5 A
EfficiencyKnown for one87.5%
Hold timeKnown for one24 ms
Power protection featuresDiffersOver current, Over power, Over voltage, Short circuit, Under voltageOver voltage, Overload, Short circuit
Max output current (+12V)Known for one18 A
Ports & interfaces2 differ
Motherboard power connector20+4 pin ATX20+4 pin ATX
Number of SATA power connectorsDiffers42
Peripheral (Molex) power connectors (4-pin)Differs16
PCI Express power connectors (6+2 pin)Known for one1
CPU P4 connector (4-pin)11
Floppy disk drive connectorKnown for oneYes
Floppy drive power connector11
Cabling typeNon-ModularNon-Modular
ATX power connector (20+4 pin)Known for oneYes
Performance1 differ
PurposePCPC
Power supply unit (PSU) form factorDiffersSFXATX
80 PLUS certificationKnown for one80 PLUS Bronze
Noise levelKnown for one33.9 dB
Mean time between failures (MTBF)Known for one100000 h
ATX versionKnown for one2.2
Design1 differ
Product colourDiffersBlackGrey
Cooling typeActiveActive
Fan diameter8 cm8 cm
Number of fans1 fan(s)1 fan(s)
Fan speedKnown for one2579
On/off switchYesYes
Fan locationKnown for oneSide
Operational conditionsidentical
Operating temperature (T-T)Known for one10 - 50 °C
Certificatesidentical
Compliance certificatesKnown for oneRoHS
CertificationKnown for oneCE, CB, TÜV
Weight & dimensions3 differ
WidthDiffers100 mm140 mm
DepthDiffers125 mm86 mm
HeightDiffers63.5 mm150 mm
WeightKnown for one950 g
Packaging dataidentical
ManualKnown for oneYes
Package widthKnown for one199 mm
Package depthKnown for one195 mm
Package heightKnown for one75 mm
Package weightKnown for one1.3 kg
Technical detailsidentical
Sustainability certificatesKnown for oneENERGY STAR
Other featuresidentical
Warranty cardKnown for oneYes
Noise level (silent mode, <30%)Known for one20.7 dB
Noise level (quiet mode, 50%)Known for one20.9 dB
Noise level (full-load mode, 100%)Known for one33.9 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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