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Silverstone ST45SF V3.0 450W SFX Power Supply Unit

Silverstone ST45SF 450W SFX PSU V3.0
£70.80 inc. VAT
Available for pre-order
Lead time usually 1-3 days

The Silverstone ST45SF 450W SFX V3.0 Power Supply Unit is a 450W SFX, upgrade-worthy, small form factor PSU. This SFX unit is compatible not only with chassis that use SFX power supplies but also in smaller ATX chassis, using the included adapter bracket. As well as its small size, the ST45SF has features expected from an elite ATX power supply such as 80 PLUS Bronze level of efficiency, temperature controlled (built-in 92mm) fan, 40℃ temperature rating and reliability for 24/7 operation. The single +12V rail and 8pin/6pin PCI-E connectors offer full support for multi-GPU systems. It supports standard SFX form factor and ATX via the included bracket.

An adaptor is included to convert ST45SF to mount in any ATX case in addition to ones that fit only SFX.

Also available: ST45SF V2.0:

Differences between V2.0 and V3.0:

  • V2.0 has greater +3.3V and +5V output and higher temperature rating of 10℃ ~ 50℃ for NAS/storage focused systems or industrial PCs (IPC). Single 80mm silent fan. Weight of 1 kg. 120W on Combined +3.3V & +5V and 432W / 36A on Combined +12V. 10°C ~ 50°C operating temperature.
  • V3.0 has greater +12V output (450W / 37.5A) and lower noise for home desktops or gaming PCs. 110W on Combined +3.3V & +5V. 0 ~ 40℃ operating temperature. A single 92mm silent fan and weight of 1.1 kg.


  • 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 / 200mm / 100mm)
  • 2 x 4-Pin Peripheral connector (300mm / 200mm)
  • 1 x 4-Pin Floppy connector(300mm / 200mm / 200mm)

Protection: Over current protection; Over voltage protection; Short circuit protection; Over Power Protection; Under Voltage Protection.

Other: Includes SFX to ATX bracket for use in ATX cases; Compatible with ATX12V v2.4.

Warranty: The ST45SF comes with a 2 year manufacturer's warranty.

Brand Silverstone
Model ST45SF 450W SFX PSU
Form Factor SFX
Colour Black
Power Supply
Connector Type UK C13 Power Cable
Output Power 450W
Connectors24-pin ATX 300mm
4-pin 12V 400mm
Floppy Power
SATA Power 300mm
SATA Power 200mm
SATA Power 100mm
SATA Power
SATA Power
SATA Power
SATA Power
Operating Temperature 0℃ - 50℃
TypeFan Cooled
Fan Type 1x 80mm
W x D x H 115 x 86 x 140 mm
Volume 1.38 litres
Manufacturer's Warranty
Duration Manufacturer's Limited 24 months
  • Supports standard SFX form factor and ATX via included bracket
  • 80 PLUS Bronze level efficiency (82%~85% efficiency at 20%~100% loading)
  • Active PFC
  • Single PCIE 8-pin and dual PCIE 6-pin connectors support
Data provided by manufacturers. Mini-ITX.com assumes no responsibility or liability for any errors or omissions.


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