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Black rectangular ATX power supply unit with modular cable ports and a 14 cm fan grille

Fractal Design

Fractal Design Ion 3 Gold 850W power supply FD-P-IA3G-850-US

SKU CH-T66J-78VH8 MPN FD-P-IA3G-850-US

An 850 W ATX12V 3.1 unit with 80 PLUS Gold efficiency, a native 16-pin PCIe Gen 5 cable and fully modular UltraFlex cables

  • ColorBlack
  • TypeATX12V 3.1
  • Maximum Power850 W
  • PFCActive
  • +12V RailsSingle
  • PCI-Express Connector2 x 6-Pin, 3 x 6+2-Pin

Option Ion 3 Gold 850W Black

  • Ready for next-gen GPUs with ATX12V 3.1 and PCIe Gen 5 12V-2×6 support
  • 80 PLUS Gold certified efficiency cuts energy use and heat output
  • Momentum 14 fan with fluid dynamic bearing and LCP blades runs quieter and lasts longer
  • Zero RPM mode stops the fan entirely under light loads for near-silent operation
  • Fully modular UltraFlex cables simplify routing for a clean build

850W ATX12V 3.1 power supply

This Fractal Design Ion 3 Gold unit delivers 850 W through a single +12V rail and meets 80 PLUS Gold efficiency targets. It is built for ATX12V 3.1 platforms and includes a native 16-pin PCIe Gen 5 12V-2×6 cable for modern graphics cards. The fully modular design uses UltraFlex cables to simplify routing in a variety of builds.

Sustained load behaviour

Under continuous demand the Momentum 14 fan with fluid dynamic bearing and LCP blades adjusts speed to maintain airflow while keeping noise low. Japanese 105°C capacitors and an active PFC design support stable voltage regulation across the operating range. A Zero RPM mode stops the fan entirely during lighter workloads for near-silent operation.

Upgrade context

The PSU replaces older units that lack ATX12V 3.1 compliance and native 12V-2×6 connectivity, removing the need for adapter cables on new GPUs. Its 90,000-hour MTBF and 10-year coverage reflect a component-grade build intended for long service life. The jump is worthwhile when moving to a platform that requires excursion handling and Gen 5 power delivery.

Pontos fortes

  • Ready for next-gen GPUs with ATX12V 3.1 and PCIe Gen 5 12V-2×6 support
  • 80 PLUS Gold certified efficiency cuts energy use and heat output
  • Momentum 14 fan with fluid dynamic bearing and LCP blades runs quieter and lasts longer
  • Zero RPM mode stops the fan entirely under light loads for near-silent operation
  • Fully modular UltraFlex cables simplify routing for a clean build

Especificações

BrandFractal Design
ModelFD-P-IA3G-850-US
ColorBlack
TypeATX12V 3.1
Maximum Power850 W
PFCActive
+12V RailsSingle
PCI-Express Connector2 x 6-Pin, 3 x 6+2-Pin
SATA Power Connector4x SATA, 400+150+150+150 mm; 2x SATA 650+150 mm
ModularFull Modular
Efficiency= 45% ErP Lot 6 compliant
Energy-Efficient80 PLUS GOLD Certified
Input Voltage100 - 240 V
MTBF90,000 HRS
ApprovalsCE, UKCA, BSMI, CCC, FCC, TUV, cULus, RCM, ICES, CB, KC
FeaturesATX12V 3.1 compatibility for next-gen components with GPU power excursion support to ensure stability with upcoming graphics cards.16-pin PCIe Gen 5 12V-2×6 cable provides native GPU power with shortened sense pins for a reliable, secure connection.80 PLUS Gold certified for high efficiency with optimized power delivery for reduced heat output.Powerful 140 mm Momentum fan with fluid dynamic bearing delivers quieter, cooler performance.Zero RPM Mode option allows fan deactivation under lighter loads for near-silent operation.Zero RPM Mode option allows fan deactivation under lighter l
Dimensions150 x 150 x 86 mm
Weight1.8kg
Peso de envio6.21 kg
Dimensões da embalagem356 × 187 × 127 mm

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Perguntas sobre este artigo

How loud does the Momentum 14 fan get when the Ion 3 Gold 850W runs at full load all day?

The Momentum 14 fan uses a fluid dynamic bearing and LCP blades for lower noise, with variable speeds and a Zero RPM mode that stops the fan entirely under lighter loads.

Which cables must I already have to connect this fully modular PSU to my drives?

No drive cables are included in the box; you will need to use the supplied UltraFlex modular cables — four SATA connectors on one cable and two on another — for your SATA drives.

Will the ATX12V 3.1 design and 16-pin 12V-2×6 cable work with my older graphics card that uses 6-pin or 6+2-pin connectors?

Yes, the unit includes two 6-pin and three 6+2-pin PCIe cables alongside the 16-pin Gen 5 cable, so older GPUs connect without adapters.

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