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

Fractal Design

Fractal Design FD-P-IA3G-750-US 750W ATX12V 3.1 power supply

SKU CH-3WTT-X1794 MPN FD-P-IA3G-750-US

Delivers 750 W of 80 PLUS Gold certified power with ATX12V 3.1 support and a native 16-pin PCIe Gen 5 12V-2×6 cable for next-generation graphics cards

  • Max wattage750 W
  • Power efficiency= 45% ErP Lot 6 compliant
  • Modular cablingFull Modular
  • Power factor correctionActive
  • 12V railsSingle
  • PCIe power connectorsPCI-E 6+2 pin, 650 mm; PCI-E Gen5 12 V-2 × 6, 700 mm

Model Ion 3 Gold 750W Black

  • Ready for next-gen GPUs with ATX12V 3.1 and PCIe Gen 5 12V-2×6 support
  • 80 PLUS Gold efficiency cuts energy waste and heat
  • Momentum 14 fan with fluid dynamic bearing runs quieter and lasts longer
  • Zero RPM mode stops the fan completely at low loads
  • Fully modular UltraFlex cables keep the build tidy and airflow clear

Next-generation ATX12V 3.1 power supply

The Fractal Design Ion 3 Gold delivers 750 W of continuous power through a fully modular design. It targets builders assembling modern gaming systems that require stable output for high-end graphics cards. ATX12V 3.1 compliance ensures compatibility with upcoming component power excursions. The single +12 V rail simplifies load distribution across all connected hardware.

Thermals noise and power draw

A Momentum 14 fan with fluid dynamic bearing and LCP blades provides adaptive cooling through variable speeds. Zero RPM mode stops the fan entirely under lighter loads for near-silent operation. 80 PLUS Gold certification confirms high efficiency at typical loads, reducing waste heat and energy use. Active PFC and ErP Lot 6 compliance at 45 % further limit standby consumption.

Upgrade path and value

The unit replaces older ATX supplies that lack native 16-pin PCIe Gen 5 12V-2×6 connectors for current graphics cards. UltraFlex cables and full modularity ease routing compared to fixed-cable designs. Japanese 105 °C capacitors and a 90 000-hour MTBF support long-term reliability. The jump is worthwhile when building or refreshing a system that needs Gen 5 GPU power and quiet, efficient delivery.

How it compares

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

Price $100.99
Cheaper than about 67% of the 10,869 comparable items (median $142.99).
Max wattage 750 W
Lower than about 60% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameFractal Design
Model nameFD-P-IA3G-750-US
Product colorBlack
Product typeATX12 V 3.1
Ports & slots
PCIe power connectorsPCI-E 6+2 pin, 650 mm; PCI-E Gen5 12 V-2 × 6, 700 mm
SATA power connectors4x SATA, 400+150+150+150 mm; 2x SATA 650+150 mm
Power
Max wattage750 W
Power efficiency= 45% ErP Lot 6 compliant
Modular cablingFull Modular
Power factor correctionActive
12V railsSingle
Efficiency certification80 PLUS GOLD Certified
Supply voltage100–240 V
Size & build
Product dimensions150 × 150 × 86 mm
Product weight1.8kg
Shipping weight3.49 kg
Package size356 × 187 × 127 mm
Environment & compliance
Regulatory approvalsCE, UKCA, BSMI, CCC, FCC, TUV, cULus, RCM, ICES, CB, KC
More details
Mean time between failures90,000 HRS

Other versions of this model

3 more in the same range

Questions about this item

How do I install the 16-pin PCIe Gen5 12V-2x6 cable, and what step is often missed?

Plug the 16-pin connector fully into the GPU until it clicks, then attach the other end to the PSU's PCIe port. The shortened sense pins must seat completely or the card will not power on.

What maintenance will the Momentum 14 fan need over time?

The fluid dynamic bearing is sealed and requires no lubrication. Clean dust from the blades and grille every few months with compressed air to keep airflow and noise levels consistent.

At what point does the 750 W limit appear during sustained load?

When total system draw reaches 750 W the over-power protection will trip and shut the unit down. The single +12V rail delivers the full 750 W, so combined CPU and GPU load must stay below that figure.

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