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Product comparison · 2 power supply units

StarTech.com ATXPW500PRO2 power supply unit vs StarTech.com ATXPW550PRO2 power supply unit

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  • 34specifications compared
  • 11differ
  • 23identical
  • 1known for one product only

Key differences

  • Total power
    • 500 W
    • 550 W
  • Peak power
    • 650 W
    • 715 W
  • Max output current (+5V)
    • 45 A
    • 50 A
  • Motherboard power connector
    • 20+4 pin ATX
    • 24-pin ATX
  • Number of SATA power connectors
    • 5
    • 7
  • ATX version
    • 2.1
    • 2.01
  • Noise level
    • 33.31 dB
    • 31.8 dB
  • Fan diameter
    • 8 cm
    • 12 cm

Side by side

Differences highlightedShow differences only
35 specifications
A

StarTech.com

ATXPW500PRO2 power supply unit

Model ATXPW500PRO2

View product
B

StarTech.com

ATXPW550PRO2 power supply unit

Model ATXPW550PRO2

View product
Power3 differ
Total powerDiffers500 W550 W
Peak powerDiffers650 W715 W
AC input voltage100 - 240 V100 - 240 V
Input current100 A100 A
Max output current (+3.3V)30 A30 A
Max output current (+12V)18 A18 A
Max output current (+5V)Differs45 A50 A
Max output current (-12V)1 A1 A
Max output current (+5Vsb)2.5 A2.5 A
Efficiency72%72%
Power protection featuresOver current, Over power, Over voltage, Short circuitOver current, Over power, Over voltage, Short circuit
Ports & interfaces2 differ
Motherboard power connectorDiffers20+4 pin ATX24-pin ATX
Number of SATA power connectorsDiffers57
PCI Express power connectors (6-pin)22
CPU power connector (4+4 pin)YesYes
ATX Power connector (24-pin)Known for oneYes
Cabling typeNon-ModularNon-Modular
I/O ports2 x SP4, 5 x LP42 x SP4, 5 x LP4
Performance2 differ
PurposePCPC
Power supply unit (PSU) form factorATXATX
ATX versionDiffers2.12.01
EPS version2.922.92
Noise levelDiffers33.31 dB31.8 dB
Bearing technologyFDBFDB
Mean time between failures (MTBF)100000 h100000 h
Design2 differ
Product colourSilverSilver
Fan diameterDiffers8 cm12 cm
Number of fans1 fan(s)1 fan(s)
Fan speedDiffers35001800
Operational conditionsidentical
Operating temperature (T-T)0 - 40 °C0 - 40 °C
Storage temperature (T-T)-20 - 80 °C-20 - 80 °C
Operating relative humidity (H-H)10 - 90%10 - 90%
Weight & dimensions1 differ
WeightDiffers1.8 kg1.83 kg
Packaging data1 differ
Package weightDiffers2.2 kg2.04 kg
Other featuresidentical
Dimensions (WxDxH)150 x 140 x 86 mm150 x 140 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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