We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
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

  • Max wattage300 W
  • Power efficiency82% - 85%
  • Fan configurationSingle 92 mm silent fan
  • Power factor correctionActive
  • Main power 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.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $63.99
Cheaper than about 83% of the 10,869 comparable items (median $142.99).
Max wattage 300 W
Lower than about 92% of the 930 comparable items (median 850 W).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameSilverStone
Product lineSFX Series
Model nameSST-ST30SF-V2
Product typeSFX
Ports & slots
PCIe power connectors1 × 6-Pin
SATA power connectors3
Output type+3.3 V@21A, +5 V@20A, +12 V@22A
Connection types1 × 24 / 20-Pin motherboard connector
1 × 8 / 4-Pin EPS / ATX 12 V connector
1 × 6-Pin PCIE connector
3 x SATA connector
2 × 4-Pin Peripheral connector
1 × 4-Pin Floppy connector
Power
Max wattage300 W
Power efficiency82% - 85%
Power factor correctionActive
Main power connector20+4Pin
12V railsSingle
Efficiency certification80 PLUS BRONZE Certified
Overvoltage protectionYes
Supply voltage90–264 V
AC input frequency47–63 Hz
Size & build
Product dimensions2.5 in × 4.92 in × 3.94 in
Product weight2.2 lb (1 kg)
Shipping weight3.63 kg
Package size330 × 254 × 203 mm
Compatibility
PSU length limit100 mm
More details
Fan configurationSingle 92 mm silent fan
Mean time between failures>100,000 h

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.

More in ATX Desktop Power Supplies

Similar items