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Compact SFX power supply unit, matte black metal casing, single 92mm fan grille, modular cable connectors visible

Silverstone

Silverstone SST-ST30SF-V2 300 W SFX power supply

SKU CH-JQ7E-1EYV4 MPN SST-ST30SF-V2

A 300 W SFX unit with 80 PLUS Bronze efficiency, a single +12 V rail at 22 A, one PCIe 6-pin and three SATA connectors, plus a silent 92 mm fan

  • TypeSFX
  • Maximum Power300 W
  • FansSingle 92mm silent fan
  • PFCActive
  • Main Connector20+4Pin
  • +12V RailsSingle
  • Compact SFX design fits small cases with 100 mm length
  • 80 PLUS Bronze certification delivers 82 to 85 percent efficiency
  • Single 92 mm fan runs quietly during operation
  • Active PFC and over voltage protection safeguard components
  • 300 W continuous output at 40 degree C rated for 24/7 use

SFX 300 W power supply for compact builds

This SilverStone SFX unit delivers 300 W of continuous power in a 100 mm long chassis. It carries 80 PLUS Bronze certification with 82% to 85% efficiency across typical loads. A single 92 mm fan provides quiet cooling, while active PFC and a single +12 V rail rated at 22 A ensure stable output.

Suits small-form-factor PCs with modest GPU needs

The single 6-pin PCIe connector supports entry-level graphics cards, and three SATA connectors cover basic storage. Builds requiring multiple PCIe power cables or higher 12 V current should consider a larger SFX or ATX unit instead.

Fits standard SFX bays

The 20+4-pin motherboard connector, 8/4-pin EPS connector, two peripheral connectors and a floppy connector cover legacy and current wiring. The 90 to 264 V input range allows worldwide use without a voltage switch.

Highlights

  • Compact SFX design fits small cases with 100 mm length
  • 80 PLUS Bronze certification delivers 82 to 85 percent efficiency
  • Single 92 mm fan runs quietly during operation
  • Active PFC and over voltage protection safeguard components
  • 300 W continuous output at 40 degree C rated for 24/7 use

Specifications

BrandSilverStone
SeriesSFX Series
ModelSST-ST30SF-V2
TypeSFX
Maximum Power300 W
FansSingle 92mm silent fan
PFCActive
Main Connector20+4Pin
+12V RailsSingle
PCI-Express Connector1 x 6-Pin
SATA Power Connector3
Max PSU Length100 mm
Efficiency82% - 85%
Energy-Efficient80 PLUS BRONZE Certified
Over Voltage ProtectionYes
Input Voltage90 - 264 V
Input Frequency Range47 - 63 Hz
Output+3.3V@21A, +5V@20A, +12V@22A, [email protected] , [email protected]
MTBF>100,000 Hours
Connectors1 x 24 / 20-Pin motherboard connector
1 x 8 / 4-Pin EPS / ATX 12V connector
1 x 6-Pin PCIE connector
3 x SATA connector
2 x 4-Pin Peripheral connector
1 x 4-Pin Floppy connector
FeaturesSupports standard SFX form factor and ATX via included bracket
300W continuous power output at 40 degree C temperature rated for 24/7 operation
80 PLUS Bronze level efficiency (82% ~ 85% efficiency at 20% ~ 100% loading)
Class-leading single +12V rail
Silent running 92mm fan
Single PCI-E 6pin connectors support
Active PFC
Over Current Protection, Over Voltage Protection, Short Circuit Protection, Over Power Protection, Under Voltage Protection
Dimensions2.50" x 4.92" x 3.94"
Weight2.20 lbs.
Shipping weight3.63 kg
Package size330 × 254 × 203 mm

Questions about this item

Will this power supply fit in a standard SFX case?

The unit follows the SFX form factor and measures 100 mm in length, matching the standard SFX dimensions used in compact cases.

Can it power a graphics card that needs an 8-pin PCIe connector?

Only one 6-pin PCIe connector is provided; an 8-pin requirement would need an adapter or a different power supply.

Is the 300 W rating continuous or peak?

The 300 W output is rated for continuous operation at 40 °C, suitable for 24/7 use.

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