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Corsair 850W SF Series SF850 SFX PSU Fully Modular 80+ Platinum Fluid Dynamic Fan ATX 3.1

SKU Code: HOCSP-85435

Original price was: £180.88.Current price is: £171.98.

Corsair 850W SF Series SF850 SFX PSU Fully Modular 80+ Platinum Fluid Dynamic Fan ATX 3.1

SKU Code: HOCSP-85435

MPN:

CP-9020256-UK

  • 24-pin ATX 3.1
  • 850W Wattage
  • Fully-Modular
  • 80 PLUS Platinum

Original price was: £180.88.Current price is: £171.98.

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Product Description

Corsair SF850 SFX Platinum Power Compact Powerhouse, Platinum Precision

CP-9020256_02

High-Efficiency Power for SFF Builds

The Corsair SF Series SF850 is built to drive compact, high-performance PCs with ease. With 850 watts of continuous power, 80 PLUS Platinum efficiency, and full ATX 3.1 and PCIe 5.1 compatibility, this SFX PSU is ready for the latest GPUs and CPUs. Its fully modular layout, ultra-compact size, and included SFX-to-ATX bracket make it perfect for any build—from tiny form factors to space-conscious ATX rigs.

Whisper-Quiet Operation with Smart Cooling

A 92mm fluid dynamic PWM fan keeps thermals under control while maintaining near-silent operation. Thanks to Zero RPM Mode, the fan remains off during low and medium loads, ensuring true silence when your system doesn’t need active cooling. The result is clean, efficient power delivery without noise—ideal for gamers, creators, and quiet PC enthusiasts.

Premium Internal Components for Lasting Reliability

Corsair’s commitment to durability shows through in the SF850’s internal design. Japanese 105°C rated capacitors, Cybenetics Platinum certification, and wide-range AC input all ensure stable power even under stress. With a continuous operating temperature of 50°C and backed by a 7-year warranty, the SF850 is built for serious endurance and trusted performance.

Specifications

Form Factor:SFX
Series:Corsair SF
Wattage:850 W
Modular:Fully Modular
Compatibility:ATX12V v3
EPS12V v2.92
ATX 3.1 Compliant
PCIe 5.1 Ready
Wattage Range:800 – 860 W
Connectors:1 x ATX (24-pin)
2 x EPS / ATX 12V 8-pin (4+4)
3 x PCIe 8-pin (6+2)
1 x 12VHPWR (12+4) pin
4 x SATA (4 Straight SATA)
4 x SATA (4 Right SATA)
3 x PATA
AC Input:100-240V
Fan Type:92 mm PWM Cooling Fan
Fan Bearing:Fluid / Hydraulic Bearing
Noise:Low-Noise Operation
Zero RPM Mode
Max Certification:Platinum
Efficiency:80 Plus Platinum
Cybenetics Platinum
Package Contents:SF850 Power Supply
DC Cable Kit
SFX-ATX Adapter Bracket
Power Cord
Mounting Screws
Cable Ties
Weight/Dimensions:1.05 kg
125 x 100 x 63.5 mm
Package Weight:2.3300 kg
Warranty:7 Years

Other Options

Customer Reviews

  • 24-pin ATX 3.1
  • 850W Wattage
  • Fully-Modular
  • 80 PLUS Platinum
Description

Corsair SF850 SFX Platinum Power Compact Powerhouse, Platinum Precision

CP-9020256_02

High-Efficiency Power for SFF Builds

The Corsair SF Series SF850 is built to drive compact, high-performance PCs with ease. With 850 watts of continuous power, 80 PLUS Platinum efficiency, and full ATX 3.1 and PCIe 5.1 compatibility, this SFX PSU is ready for the latest GPUs and CPUs. Its fully modular layout, ultra-compact size, and included SFX-to-ATX bracket make it perfect for any build—from tiny form factors to space-conscious ATX rigs.

Whisper-Quiet Operation with Smart Cooling

A 92mm fluid dynamic PWM fan keeps thermals under control while maintaining near-silent operation. Thanks to Zero RPM Mode, the fan remains off during low and medium loads, ensuring true silence when your system doesn’t need active cooling. The result is clean, efficient power delivery without noise—ideal for gamers, creators, and quiet PC enthusiasts.

Premium Internal Components for Lasting Reliability

Corsair’s commitment to durability shows through in the SF850’s internal design. Japanese 105°C rated capacitors, Cybenetics Platinum certification, and wide-range AC input all ensure stable power even under stress. With a continuous operating temperature of 50°C and backed by a 7-year warranty, the SF850 is built for serious endurance and trusted performance.

Specifications

Form Factor:SFX
Series:Corsair SF
Wattage:850 W
Modular:Fully Modular
Compatibility:ATX12V v3
EPS12V v2.92
ATX 3.1 Compliant
PCIe 5.1 Ready
Wattage Range:800 – 860 W
Connectors:1 x ATX (24-pin)
2 x EPS / ATX 12V 8-pin (4+4)
3 x PCIe 8-pin (6+2)
1 x 12VHPWR (12+4) pin
4 x SATA (4 Straight SATA)
4 x SATA (4 Right SATA)
3 x PATA
AC Input:100-240V
Fan Type:92 mm PWM Cooling Fan
Fan Bearing:Fluid / Hydraulic Bearing
Noise:Low-Noise Operation
Zero RPM Mode
Max Certification:Platinum
Efficiency:80 Plus Platinum
Cybenetics Platinum
Package Contents:SF850 Power Supply
DC Cable Kit
SFX-ATX Adapter Bracket
Power Cord
Mounting Screws
Cable Ties
Weight/Dimensions:1.05 kg
125 x 100 x 63.5 mm
Package Weight:2.3300 kg
Warranty:7 Years