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Black rectangular ATX power supply with modular cable ports and 135mm fan grille

MAINGEAR

MAINGEAR Ignition 850W 80 Plus Gold ATX Fully Modular Power Supply

SKU CH-41G0-0C3TM

Fully modular 850W ATX power supply with 80 Plus Gold efficiency, 100A single rail, Japanese capacitors and a 135mm fluid-dynamic-bearing fan with ECO mode for silent operation

  • Product typeAT
  • 80 PLUS Gold certification delivers 91% efficiency under typical loads
  • Fully modular cable design lets you connect only the cables you need
  • 100 A single +12 V rail powers demanding multi-GPU systems
  • ECO mode switch stops the 135 mm fan until higher load thresholds
  • Japanese capacitors and DC-to-DC topology stabilise output voltage

850W Gold Fully Modular PSU

The MAINGEAR Ignition 850W is an ATX power supply built for high-draw gaming rigs and multi-GPU configurations. It delivers 850 watts through a fully modular cable set, letting builders use only the connections they need. 80 PLUS Gold certification guarantees 91% efficiency or higher at typical loads. Japanese capacitors and a single +12V rail rated at 100 amps support stable output.

Who This Suits And Who Should Look Elsewhere

This unit fits builders running power-hungry graphics cards or multiple GPUs who want clean cable routing and a 10-year warranty. The ECO mode switch stops the 135mm fluid-dynamic-bearing fan at low loads for silent operation. It is not for systems that need more than 850 watts of continuous power. It is not for builds requiring a smaller form factor than standard ATX.

100 Amp Single +12V Rail

A single +12V rail capable of 100 amps supplies the entire 850 watt capacity to CPU and GPU connectors without multi-rail limits. Active PFC exceeds 99% power factor across a 100-240VAC input range. DC-to-DC conversion and active clamp topology keep voltage regulation tight under heavy loads. Comprehensive protection circuits cover over-current, over-voltage, over-power, over-temperature, under-voltage and short-circuit events.

How it compares

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

Price $260.99
Pricier than about 73% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeAT

Questions about this item

What cables come in the box and do I need to buy any separately?

The fully modular design includes only the cables you need for your build; no separate cable purchases are required for standard installations.

Should I choose this 850W model or a different capacity for my multi-GPU system?

The 850W unit with its 100 Amp single +12V rail is recommended for multi-GPU and high power draw systems.

What does the 91% efficiency figure mean for daily power draw and heat?

At typical loads the PSU runs at 91% efficiency or higher, lowering electricity cost and reducing waste heat inside the case.

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