After successfully expanding and leading SFF(small form factor) cases and SFX PSU into the DIY (do it yourself) market, SilverStone engineers have continued their push for advancement in these categories by releasing a true upgrade-worthy small form factor power supply, the ST45SF-G. Despite being half the size of a regular ATX power supply, the ST45SF-G can still produce continuous power output of 450W. Its 80 PLUS Gold level efficiency is a great leap from the previous SFX best of 80 PLUS Bronze and the full modular cables is also the first of its kind for this form factor. To enable users to easily take advantage of this excellent SFX power supply, an adapter is included to convert ST45SF-G to mount in any ATX case in addition to ones that fit only SFX. For SFF users and for SilverStone, the ST45SF-G is more than just an upgrade, it is an important milestone for DIY desktop computer.
  • Support standard SFX form factor and ATX via included bracket
  • 80 PLUS Gold level efficiency (87%~90% efficiency at 20%~100% loading)
  • 100% modular cables
  • 450W continuous power output at 40 operating temperature rated for 24/7 operation
  • Class-leading single +12V rail with 37A
  • Strict 3% voltage regulation and low ripple & noise
  • 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
Load Range
+3.3V +5V +12V1 +5VSB -12V
19A 14A 37A 2.5A 0.3A
Peak (Amps)
/ / / / /
0A 0A 0A 0A 0A
Range (%)
3% 3% 3% 5% 10%
Line Reg.(%)
1% 1% 1% 1% 1%
50mA 50mA 120mV 50mA 120mV
combined +3.3, +5V
combined +12V
444W / 37A
Input Voltage
90V ~ 264V
Input Frequency Range
47Hz ~ 63Hz
Active PFCPF>0.90 at full load
87%~90%20% to 100% loading
100,000 hours at 25C, full load
Operating temperature
0C ~ 40C
Over current protection
Over power protection
Over voltage protection
Under voltage protection
Short circuit protection
No Load Operation
1 x 24 / 20-Pin motherboard connector300mm
1 x 8 / 4-Pin EPS / ATX 12V connector400mm
1 x 8/6-Pin PCIE connector400mm
1 x 6-Pin PCIE connector400mm / 150mm
3 x SATA connector300mm / 200mm / 100mm
2 x 4-Pin Peripheral connector 300mm / 200mm
1 x 4-Pin Floppy connector300mm / 200mm / 200mm
BlackLead-Free Paint
Cooling System
Single 80mm silent fan
Noise Level
20dBA minimum
125 mm (W) 63.5 mm(H) 100 mm(D)
1.45 Kg
Form factor
80 PLUS Gold
Includes SFX to ATX bracket for use in ATX case
GPU Support list

No additional files, specification sheets, guides or documentation found for product.

Warranty: 3Y

Full manufacturers warranty details are available at the manufacturers (SilverStone) web site.

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