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Description

Silverstone ST85F-PT power supply unit with 850 W power and ATX format in black, designed for desktop systems that require a stable supply. It offers 92% efficiency and protection against overcurrent, overvoltage, overheating, short circuit, and undervoltage. Its +12V outputs provide up to 70.9 A, with 22 A on both +3.3V and +5V, and the PCI Express power cable measures 55 cm to facilitate connection in spacious towers. It includes three 4-pin Molex connectors and features active power factor correction, accepting input voltage between 90 and 264 V.

Specifications

Power


  • Total power: 850 W
  • AC input voltage: 90 - 264 V
  • AC input frequency: 50 - 60 Hz
  • Power Factor Correction (PFC) type: Active
  • Combined power (+3.3V): 120 W
  • Combined power (+12V): 850 W
  • Combined power (+5V): 120 W
  • Combined power (-12V): 3.6 W
  • Combined power (+5Vsb): 15 W
  • Max output current (+3.3V): 22 A
  • Max output current (+12V): 70.9 A
  • Max output current (+5V): 22 A
  • Max output current (-12V): 0.3 A
  • Max output current (+5Vsb): 3 A
  • Efficiency: 92%
  • Power protection features: Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage

Ports & interfaces


  • Motherboard power connector: 20-pin ATX
  • Motherboard power cable length: 55 cm
  • Number of SATA power connectors: 12
  • SATA power cable length: 150 mm
  • Peripheral (Molex) power connectors (4-pin): 3
  • Peripheral (Molex) power cable length: 150, 600 mm
  • EPS power connector (8-pin): Yes
  • PCI Express power connectors (6-pin): 4
  • PCI Express power cable length: 55 cm
  • ATX Power connector (20-pin): Yes
  • Floppy drive power connector: 1
  • Floppy disk drive cable length: 10 cm
  • Cabling type: Fully-Modular

Performance


  • 80 PLUS certification: 80 PLUS Platinum
  • Purpose: PC
  • Power supply unit (PSU) form factor: ATX
  • Noise level: 28 dB
  • Mean time between failures (MTBF): 10000 h

Design


  • Product colour: Black
  • Fan diameter: 12 cm
  • Number of fans: 1 fan(s)
  • Fan location: Top

Operational conditions


  • Operating temperature (T-T): 0 - 50 °C

Weight & dimensions


  • Width: 150 mm
  • Depth: 140 mm
  • Height: 86 mm
  • Weight: 2.54 kg

Logistics data


  • Harmonized System (HS) code: 84733020

Other features


  • PCI Express slots quantity: 4
  • Noise level (full-load mode, 100%): 28 dB
  • Output power description: 850
  • Number of SATA connectors: 12

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