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Rectangular black metal ATX power supply unit with fan grille and power connector visible

KHACHIMO

KHACHIMO EX3400-48P 54.5V 16.88A 920W power supply

SKU CH-D5KH-3M7TT

An ATX unit delivering 920 W at 54.5 V and 16.88 A with 80 PLUS Gold efficiency, zero-RPM fan mode and resonant LLC topology for clean power and quiet operation

  • TypeATX
  • 80 PLUS Gold certification cuts electricity use and heat
  • Zero RPM fan mode stops the fan at low and medium loads for silent running
  • Modern Standby support gives extremely fast wake-from-sleep and better low-load efficiency
  • Resonant LLC topology with DC-to-DC conversion delivers clean power and reduces coil whine
  • 920 W output at 54.5 V and 16.88 A powers demanding builds

920W ATX power supply

The KHACHIMO EX3400-48P delivers 920 watts of continuous power in a standard ATX form factor. It is built for desktop builders who need strong, efficient output for demanding components. The 80 PLUS Gold certification confirms high efficiency across typical loads. Modern Standby compatibility enables extremely fast wake-from-sleep transitions.

Fits standard ATX builds

This unit slots into any ATX-compatible chassis without proprietary mounting requirements. Resonant LLC topology with DC-to-DC conversion provides clean, consistent power to all rails. Zero RPM fan mode stops the fan entirely at low and medium loads for near-silent operation. The design frees up thermal headroom by running cooler under load.

920-watt capacity and headroom

Rated at 54.5 volts and 16.88 amps on the primary rail, the supply handles high-end graphics cards and multi-drive arrays comfortably. Gold-rated efficiency keeps waste heat and noise low even near maximum output. Builds requiring more than 920 watts or non-ATX form factors will need a different unit. The 640-060601 reference confirms the exact revision for compatibility checks.

Highlights

  • 80 PLUS Gold certification cuts electricity use and heat
  • Zero RPM fan mode stops the fan at low and medium loads for silent running
  • Modern Standby support gives extremely fast wake-from-sleep and better low-load efficiency
  • Resonant LLC topology with DC-to-DC conversion delivers clean power and reduces coil whine
  • 920 W output at 54.5 V and 16.88 A powers demanding builds

Specifications

TypeATX

Questions about this item

How many watts can the KHACHIMO EX3400-48P sustain continuously before protection triggers?

The unit is rated for 920 W continuous output, so that is the sustained limit before any protection would engage.

Does the fan stay on constantly when the supply runs at full load all day?

Zero RPM mode stops the fan at low and medium loads; at sustained high load the fan will spin to keep temperatures in check.

Which motherboard power connector does this ATX supply require to function?

It uses the standard 24-pin ATX main connector plus the appropriate EPS/PCIe cables for the rest of the system.

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