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Product comparison · 2 power supply units

Zalman ZM400-ST power supply unit vs Zalman ZM850-HP Plus

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  • 40specifications compared
  • 25differ
  • 15identical
  • 7known for one product only

Key differences

  • Total power
    • 400 W
    • 850 W
  • Input current
    • 5 - 8 A
    • 5.5 - 11 A
  • Combined power (+3.3V)
    • 120 W
    • 180 W
  • Combined power (+12V)
    • 384 W
    • 816 W
  • Combined power (+5V)
    • 120 W
    • 180 W
  • Combined power (-12V)
    • 3.6 W
    • 6 W
  • Combined power (+5Vsb)
    • 15 W
    • 17.5 W
  • Max output current (+3.3V)
    • 24 A
    • 20 A

Side by side

Differences highlightedShow differences only
47 specifications
A

Zalman

ZM400-ST power supply unit

Model ZM400-ST

View product
B

Zalman

ZM850-HP PlusView product
Power15 differ
Total powerDiffers400 W850 W
AC input voltage100 - 240 V100 - 240 V
AC input frequency50 - 60 Hz50 - 60 Hz
Input currentDiffers5 - 8 A5.5 - 11 A
Maximum input current (@110V)Differs+12V1,+12V2,+3.3V,+5V,+5Vsb,-12V+12V1,+12V2,+12V3,+12V4,+3.3V,+5V,+5Vsb,-12V
Power factorKnown for one99
Power Factor Correction (PFC) typeActiveActive
Combined power (+3.3V)Differs120 W180 W
Combined power (+12V)Differs384 W816 W
Combined power (+5V)Differs120 W180 W
Combined power (-12V)Differs3.6 W6 W
Combined power (+5Vsb)Differs15 W17.5 W
Max output current (+3.3V)Differs24 A20 A
Max output current (+12V)Differs20 A25 A
Max output current (+5V)Differs15 A24 A
Max output current (-12V)Differs0.3 A0.5 A
Max output current (+5Vsb)Differs3 A3.5 A
EfficiencyDiffers86%90%
Power protection featuresDiffersOver current, Over power, Over voltage, Short circuitOver current, Over voltage, Short circuit, Under voltage
Ports & interfaces3 differ
Motherboard power connector20+4 pin ATX20+4 pin ATX
Number of SATA power connectorsDiffers43
EPS power connector (8-pin)YesYes
PCI Express power connectors (6-pin)Differs13
CPU P4 connector (4-pin)11
Floppy drive power connectorKnown for one1
Cabling typeDiffersNon-ModularSemi-Modular
PCI Express power connectors (6+2 pin)Known for one3
Performance1 differ
PurposePCPC
Power supply unit (PSU) form factorATXATX
80 PLUS certification80 PLUS80 PLUS
ATX versionDiffers2.32.2
Mean time between failures (MTBF)Known for one100000 h
Design1 differ
Product colourBlackBlack
Cooling typeKnown for oneActive
Fan diameterDiffers12 cm14 cm
Number of fansKnown for one1 fan(s)
Operational conditions3 differ
Operating temperature (T-T)Differs10 - 40 °C0 - 40 °C
Storage temperature (T-T)Differs-40 - 70 °C-20 - 60 °C
Operating relative humidity (H-H)Differs20 - 85%10 - 90%
Storage relative humidity (H-H)5 - 95%5 - 95%
Certificatesidentical
Compliance certificatesRoHSRoHS
Weight & dimensions1 differ
Width150 mm150 mm
DepthDiffers140 mm210 mm
Height86 mm86 mm
WeightKnown for one4 kg
Technical detailsidentical
Sustainability certificatesENERGY STARENERGY STAR
Other features1 differ
Dimensions (WxDxH)Differs150 x 140 x 86 mm150 x 210 x 86 mm

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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