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ST45SF (V3.0), 80 PLUS Bronze 450W, No Modular, SFX Power Supply

  • SKU: 10851021
  • Manufacturer: SILVERSTONE
  • MPN: SST-ST45SF-V3
  • Availability: USUALLY SHIPS WITHIN 1-3 WEEKS
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ST45SF (V3.0), 80 PLUS Bronze 450W, No Modular, SFX Power Supply

After successfully revolutionizing both HTPC and SFF market segments with innovative chassis designs, SilverStone engineers continue their push for advancement in these categories by releasing a true upgrade-worthy small form factor power supply, the ST45SF. This SFX unit is compatible not only with chassis that use SFX power supplies but also in smaller ATX chassis with the included adapter bracket. Despite its small size, the ST45SF has features that one would expect from an elite ATX power supply such as 80 PLUS Bronze level of efficiency, temperature controlled fan, 50 °C / 40 °C temperature rating, and reliability for 24/7 operation. Enthusiasts oriented features are also present with single +12V rail and 8pin/6pin PCI-E connectors to fully support multi-GPU systems. For SFF users and for SilverStone, the ST45SF is more than just an upgrade, it is an important milestone for the DIY desktop computer.

  • Support standard SFX form factor and ATX via included bracket
  • 450W continuous power output at 50°C operating temperature rated for 24/7 operation
  • 80 PLUS Bronze level efficiency (82%~85% efficiency at 20%~100% loading)
  • Class-leading single +12V rail with 36A
  • Silent running 80mm fan with 18dBA minimum
  • Single PCI-E 8pin and dual PCI-E 6pin connectors support
  • Active PFC
Model No.
Max. DC Output
Power density
567W per liter
Load Range (V3.0)
  +3.3V +5V +12V +5VSB -12V
20A 20A 37.5A 3A 0.3A
Peak (Amps)
/ / / / /
0A 0A 0.3A 0A 0A
Range (%)
±5% ±5% ±5% ±5% ±10%
Line Reg.(%)
±1% ±1% ±1% ±1% ±1%
50mA 50mA 120mV 50mV 120mV
Load Range (V2.0)
   +3.3V  +5V  +12V  +5VSB  -12V
 21A  22A  36A  2.5A  0.5A
Peak (Amps)
 /  /  /  /  /
 0.1A  0.2A  0.6A  0A  0A
Range (%)
 ±5%  ±5%  ±5%  ±5%  ±10%
Line Reg.(%)
 ±1%  ±1%  ±1%  ±1%  ±1%
 70mA  70mA  140mV  70mV  140mV
Black(Lead-Free Paint)
combined +3.3, +5V
110W (V3.0)
120W (V2.0)
combined +12V
450W / 37.5A (V3.0)
432W / 36A (V2.0)
Input Voltage
90 ~ 264 Vrms
Input Frequency Range
47Hz ~ 63Hz
Active PFC.(PF>0.9 at Full Load)
82%~85%(20% to 100% loading)
100,000 hours
Operating temperature
0 ~ 40 °C (V3.0)
10°C ~ 50°C (V2.0)
Over current protection
Over voltage protection
Short circuit protection
Over Power Protection (V3.0 only)
Under Voltage Protection (V3.0 only)
1 x 24 / 20-Pin motherboard connector(300mm)
1 x 8 / 4-Pin EPS / ATX 12V connector(400mm)
1 x 8/6-Pin PCIE connector(400mm)
1 x 6-Pin PCIE connector(400mm / 150mm)
3 x SATA connector(300mm / 220mm / 100mm)
2 x 4-Pin Peripheral connector (300mm / 200mm)
1 x 4-Pin Floppy connector(300mm / 200mm / 200mm)
Cooling System
Single 92mm silent fan (V3.0)
Single 80mm silent fan (V2.0)
Noise Level
18dBA minimum
125 mm (W) × 63.5 mm(H) × 100 mm(D)
1.1 kg (V3.0)
1 kg (V2.0)
Form factor
Includes SFX to ATX bracket for use in ATX case
Compatible with ATX12V v2.4