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Product comparison · 2 power supply units

be quiet! Efficient Power F1 vs be quiet! Straight Power E9

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  • 43specifications compared
  • 14differ
  • 29identical
  • 19known for one product only

Key differences

  • Max output current (+12V)
    • 18 A
    • 32 A
  • Max output current (+5V)
    • 22 A
    • 17 A
  • Efficiency
    • 92%
    • 92.9%
  • Hold time
    • 32 ms
    • 19 ms
  • Motherboard power connector
    • 24-pin ATX
    • 20+4 pin ATX
  • Peripheral (Molex) power connectors (4-pin)
    • 3
    • 4
  • Noise level
    • 30 dB
    • 14.6 dB
  • Mean time between failures (MTBF)
    • 100000 h
    • 300000 h

Side by side

Differences highlightedShow differences only
62 specifications
A

be quiet!

Efficient Power F1View product
B

be quiet!

Straight Power E9View product
Power5 differ
Total power400 W400 W
Peak powerKnown for one450 W
AC input voltage100 - 240 V100 - 240 V
AC input frequency50 - 60 Hz50 - 60 Hz
Input current3 - 6 A3 - 6 A
Maximum input current (@110V)Differs+12V1,+12V2,+3.3V,+5V,+5Vsb,-12V+12V1,+12V2,+12V3,+3.3V,+5V,+5Vsb,-12V
Power factorKnown for one0.99
Power Factor Correction (PFC) typeActiveActive
Combined power (+3.3V)120 W120 W
Combined power (+12V)384 W384 W
Combined power (+5V)120 W120 W
Max output current (+3.3V)24 A24 A
Max output current (+12V)Differs18 A32 A
Max output current (+12V1)18 A18 A
Max output current (+12V2)18 A18 A
Max output current (+12V3)Known for one18 A
Max output current (+5V)Differs22 A17 A
Max output current (-12V)0.3 A0.3 A
Max output current (+5Vsb)3 A3 A
EfficiencyDiffers92%92.9%
Hold timeDiffers32 ms19 ms
Power protection featuresOver current, Over power, Over voltage, Overheating, Short circuit, Under voltageOver current, Over power, Over voltage, Overheating, Short circuit, Under voltage
Combined power (-12V)Known for one3.6 W
Combined power (+5Vsb)Known for one15 W
Ports & interfaces2 differ
Motherboard power connectorDiffers24-pin ATX20+4 pin ATX
Number of SATA power connectors55
Peripheral (Molex) power connectors (4-pin)Differs34
PCI Express power connectors (6-pin)Known for one1
PCI Express power connectors (6+2 pin)11
CPU P4 connector (4-pin)Known for one1
CPU power connector (4+4 pin)YesYes
Floppy drive power connector11
Cabling typeNon-ModularNon-Modular
ATX Power connector (24-pin)Known for oneYes
Performance2 differ
PurposePCPC
Power supply unit (PSU) form factorATXATX
80 PLUS certification80 PLUS Gold80 PLUS Gold
ATX version2.312.31
Noise levelDiffers30 dB14.6 dB
Bearing technologyKnown for oneFDB
Mean time between failures (MTBF)Differs100000 h300000 h
EPS versionKnown for one2.92
Design1 differ
Product colourBlackBlack
Cooling typeActiveActive
Fan diameterDiffers12 cm13.5 cm
Number of fans1 fan(s)1 fan(s)
Fan speedKnown for one800
Fan locationKnown for oneTop
Operational conditionsidentical
Operating temperature (T-T)Known for one0 - 40 °C
Certificates1 differ
Compliance certificatesRoHSRoHS
CertificationDiffersCE, CB, TÜV, Semko, ErP, WEEECE, CB, TÜV, Semko (S)
Weight & dimensions3 differ
WidthDiffers140 mm150 mm
DepthDiffers150 mm160 mm
Height86 mm86 mm
WeightDiffers1.97 kg2.24 kg
Packaging dataidentical
Package weightKnown for one2.65 kg
Technical detailsidentical
Sustainability certificatesENERGY STARENERGY STAR
Other featuresidentical
Noise level (silent mode, <30%)Known for one13.7 dB
Noise level (quiet mode, 50%)Known for one13.8 dB
Noise level (full-load mode, 100%)Known for one14.6 dB
Package dimensions (WxDxH)Known for one248 x 328 x 102 mm
Power supply typeKnown for oneAC/DC

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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