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Rectangular ATX power supply unit, matte black finish, fully modular cable sockets, 120mm hydraulic fan visible on one side

FSP

FSP VITA GM 850W power supply

SKU CH-B9JN-45SVC

Fully modular 850W ATX unit with 80 Plus Gold efficiency and ATX 3.1 plus PCIe 5.1 support

  • Modular cablingFull Modular
  • Power factor correctionActive
  • Main power connector12 V 2 × 6
  • PCIe power connectors2 × 8-Pin
  • Efficiency certification80 PLUS Certified
  • Output type850 W

Wattage 850W

  • 80 PLUS Gold efficiency above 90% cuts power waste and heat
  • ATX 3.1 and PCIe 5.1 compliance with 12V-2x6 cable for latest GPUs
  • Premium Japanese capacitors rated 105°C ensure stable long-term operation
  • Compact 140 x 150 x 86 mm footprint fits smaller cases
  • Hydraulic-bearing 120 mm fan delivers quiet, optimised cooling

850W ATX 3.1 power supply

The FSP VITA GM 850W is a fully modular ATX unit rated at 850W with 80 PLUS Gold certification. It targets gamers, creators and professionals who need efficient, reliable power for modern graphics cards and CPUs. The compact 140 x 150 x 86 mm form factor suits smaller cases while delivering full output. A 120 mm hydraulic bearing fan keeps noise low under load.

ATX 3.1 and PCIe 5.1 limits

The unit complies with ATX 3.1 and PCIe 5.1 specifications, providing a native 12V-2x6 connector plus two 8-pin PCIe cables for current-generation GPUs. Active PFC rated at 0.9 and a 100-240V input range handle global mains voltages. Gold efficiency exceeds 90% at typical loads, reducing waste heat. Japanese capacitors rated at 105°C support long-term stability.

Upgrading from older group-regulated units

Builders replacing group-regulated or Bronze-rated supplies gain tighter voltage regulation, fully modular cabling and native 12V-2x6 support for new graphics cards. The jump is worth it when a system draws sustained power near 850W or when a GPU requires the 12V-2x6 connector without adapters. Ten-year coverage backs the transition.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $97.99
Cheaper than about 68% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product line80 Plus
Product typeATX
Ports & slots
PCIe power connectors2 × 8-Pin
Output type850 W
Power
Modular cablingFull Modular
Power factor correctionActive
Main power connector12 V 2 × 6
Efficiency certification80 PLUS Certified

Other versions of this model

1 more in the same range

Questions about this item

Should I pick the 850W model or a different wattage?

The unit supplied is the 850W version; choose it if your build needs that output, otherwise select a higher or lower wattage model from the same series.

What does the 80 Plus Gold rating mean for daily use?

It guarantees over 90% efficiency at typical loads, so less power is wasted as heat and the fan runs quieter.

How does the ATX 3.1 and PCIe 5.1 compliance affect my GPU connection?

The PSU includes a native 12V-2x6 cable plus two 8-pin PCIe cables, letting you power the latest graphics cards without adapters.

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