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 silver SFX power supply with 92mm fan and modular cables visible

Silverstone

Silverstone SST-ST45SF-V3 450W SFX power supply

SKU CH-RG27-GX6BE MPN SST-ST45SF-V3

A compact SFX unit delivering 450 W of continuous power with 80 PLUS Bronze efficiency and a quiet 92 mm fan

  • Max wattage450 W
  • Power efficiency82% - 85%
  • Fan configurationSingle 92 mm silent fan
  • Power factor correctionActive
  • 12V railsSingle
  • PCIe power connectors1 × 6+2-Pin
  • 450 W continuous power at 40 °C for reliable 24/7 operation
  • 80 PLUS Bronze efficiency between 82 % and 85 % cuts waste heat
  • Single +12 V rail delivers 36 A for stable GPU loads
  • Compact 100 mm SFX design fits small cases with ATX bracket included
  • 92 mm silent fan keeps acoustics low under load

SFX 450 W power supply

The Silverstone SST-ST45SF-V3 delivers 450 W of continuous power in the standard SFX form factor. An included bracket allows installation in ATX cases. It is built for small-form-factor systems that need reliable 24/7 operation at up to 40 ambient temperature.

80 PLUS Bronze single +12 V rail

The unit carries 80 PLUS Bronze certification with 82 to 85 percent efficiency across 20 to 100 percent load. A single +12 V rail supplies up to 36 A, simplifying power distribution for the CPU and graphics card. Active PFC and a wide 90 to 264 V input range ensure stable operation worldwide.

Compact 100 mm depth with essential connectors

At 100 mm long the supply fits tight SFX chassis while the 92 mm silent fan keeps noise low. Cabling includes one 24/20-pin motherboard connector, one 8/4-pin EPS connector, one 8/6-pin and one 6-pin PCIe connector, three SATA connectors, two peripheral connectors and a floppy connector. Over-voltage protection and a 100000-hour MTBF rating back long-term reliability.

How it compares

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

Price $77.99
Cheaper than about 76% of the 10,869 comparable items (median $142.99).
Max wattage 450 W
Lower than about 86% 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-ST45SF-V3
Product typeSFX
Ports & slots
PCIe power connectors1 × 6+2-Pin
SATA power connectors3
Output type+3.3 V@20A, +5 V@20A, +5VSB@3A
Connection types1 × 24 / 20-Pin motherboard connector
1 × 8 / 4-Pin EPS / ATX 12 V connector
1 × 8/6-Pin PCIE connector
1 × 6-Pin PCIE connector
3 x SATA connector
2 × 4-Pin Peripheral connector
1 × 4-Pin Floppy connector
Power
Max wattage450 W
Power efficiency82% - 85%
Power factor correctionActive
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 weight2.43 lb (1.1 kg)
Shipping weight1.60 kg
Package size234 × 178 × 104 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 the 450 W continuous rating hold up inside a compact case running at 40 °C?

Yes, the unit is rated for 450 W continuous output at 40 °C ambient, so it delivers full power even in warm small-form-factor builds.

What does the 80 PLUS Bronze badge actually limit in daily use?

It guarantees 82 % to 85 % efficiency from 20 % to 100 % load, meaning less waste heat and lower electricity draw across typical workloads.

Does the 100 mm length and included bracket let me mount it in a standard ATX chassis?

The 100 mm SFX body fits SFX slots natively, and the supplied bracket adapts it to ATX mounting holes without modification.

More in ATX Desktop Power Supplies

Similar items