Legacy Products

Power Supplies


ST55F-G (V1.X)


To meet the ever higher requirements imbued by professional users and enthusiasts alike, SilverStone created the Strider Gold series power supplies. The Strider Gold models are built on similar platform as the award-winning Strider Plus series but with even higher efficiency ratings. The Strider Gold series will encompass wattage range from 550W to 1200W for a great variety of applications. With a 140mm depth for easy intgration, the ST55F-G is the world shortest modular ATX PSU. In addition to 80 PLUS Gold level efficiency, all models are built to meet very high standards in electrical performance so they have ±3% voltage regulation, ±3% ripple & noise, and high amperage single +12V rail. Other notable features also included are 24/7 40℃ continuous output capability, low-noise 120mm fan, and multiple sets of PCI-E cables. For users looking for a power supply with faultless combination of performance, efficiency, and quality, there is no need to look beyond the Strider Gold Series.


  • Compact design with a depth of 140mm for easy integration
  • 80Plus Gold certification with higher efficiency 87%~90% at 20%~100% loading
  • 100% modular cables
  • 550W (600W peak power) 24hour fully continuous power output with 40℃ operating temperature
  • Class-leading single +12V rail with 45A
  • Strict ±3% voltage regulation and low ripple & noise
  • Silent running 120mm fan with 18dBA minimum


    Model No.
    SST-ST55F-G (V1.X)
    Max. DC Output
    550W(Peak 600W)
    Power density
    305W per liter
    Load Range
    +3.3V +5V +12V +5VSB -12V
    22A 18A 45A 2.5A 0.3A
    Peak (Amps)
    / / 48A 3.5A /
    0.2A 0.2A 0.3A 0A 0A
    Range (%)
    ±3% ±3% ±3% ±5% ±10%
    Line Reg.(%)
    ±1% ±1% ±1% ±1% ±1%
    50mV 50mV 120mV 50mV 120mV
    Black (lead-free paint)
    Combined +3.3V & +5V
    Combined +12V
    540W / 45A
    Input Voltage
    Input Frequency Range
    47Hz ~ 63Hz
    Active PFC.(PF>0.95 at Full Load)
    87%~90% at 20%~100% loading
    100,000 hours at 25°C(at Full Load)
    Operating temperature
    0°C ~ 40°C
    Over current protection
    Over power protection
    Over voltage protection
    Over temperature protection
    Under voltage protection
    Short circuit protection
    No Load Protection
    1 x 24 / 20-Pin motherboard connector(550mm)
    1 x 8 / 4-Pin EPS / ATX 12V connector(550mm)
    1 x 8 / 6-Pin PCIE connector(550mm)
    1 x 6-Pin PCIE connector(550mm / 150mm)
    8 x SATA connector(500mm / 150mm / 150mm)
    3 x 4-Pin Peripheral connector (500mm / 150mm / 150mm)
    1 x 4-Pin Floppy connector(500mm / 150mm / 150mm / 150mm)
    Cooling System
    Single 120mm silent fan
    Noise Level
    18 dBA minimum
    150 mm (W) x 86 mm (H) x 140 mm (D)
    5.91" (W) x 3.39" (H) x 5.51" (D)
    80 PLUS Gold
    GPU Support list
    Compatible with ATX12V v2.4

    ● Specifications presented on this page contains most recent revisions and may differ from those printed on retail boxes or manuals.

    Dimensions and cable pinout diagram