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Silver ATX power supply unit with black cooling fan and mesh grille

KHACHIMO

KHACHIMO FSP 400W ATX Power Supply FSP400-60PFN FSP400-60PLN

SKU CH-4BC8-04V1Z

A 400 W ATX unit with 80 PLUS Gold efficiency, Modern Standby support, resonant LLC plus DC-to-DC topology and a zero-RPM fan mode for silent low-load operation

  • TypeATX
  • Fast wake-from-sleep with Modern Standby support
  • Lower power draw and cooler temps via 80 PLUS Gold efficiency
  • Silent operation at low loads with Zero RPM fan mode
  • Clean, stable power from resonant LLC topology with DC-to-DC conversion
  • 400W ATX power supply compatible with FSP400-60PFN and FSP400-60PLN

400W ATX power supply

The KHACHIMO FSP 400W ATX unit delivers 400 watts of continuous power for desktop systems that require reliable energy conversion. It carries 80 PLUS Gold certification, confirming high efficiency across typical load ranges. The resonant LLC topology with DC-to-DC conversion supplies clean voltage rails and supports modern low-power sleep states.

Sustained load behaviour

Under continuous demand the Gold-rated design maintains high conversion efficiency, reducing waste heat and keeping internal temperatures lower than less efficient units. The Zero RPM fan mode stays active at low and medium loads, so the fan remains off until thermal conditions require active cooling. Resonant LLC switching minimises coil whine during extended operation.

ATX standard limits

The ATX form factor defines the physical mounting and connector layout, so the unit fits standard chassis cut-outs and motherboard pinouts without adapters. Modern Standby compatibility allows the supply to meet the fast wake-from-sleep timing required by the latest sleep specifications. Efficiency targets are bound by the 80 PLUS Gold thresholds at defined load points.

Highlights

  • Fast wake-from-sleep with Modern Standby support
  • Lower power draw and cooler temps via 80 PLUS Gold efficiency
  • Silent operation at low loads with Zero RPM fan mode
  • Clean, stable power from resonant LLC topology with DC-to-DC conversion
  • 400W ATX power supply compatible with FSP400-60PFN and FSP400-60PLN

Specifications

TypeATX

Questions about this item

How loud and hot does the FSP400-60PFN get when running continuously?

The 80 PLUS Gold certification means high efficiency, so less waste heat and lower fan speeds. Zero RPM mode stops the fan completely at low and medium loads for near-silent operation.

Which cables or connectors must my build already have to use this power supply?

It is a standard ATX unit with a 24-pin motherboard connector and 4/8-pin CPU power leads, plus the usual peripheral plugs for drives and graphics cards.

Will the resonant LLC topology and DC-to-DC conversion work reliably with older components I keep?

Yes, the topology delivers clean, consistent power and reduces coil whine, which helps stability with legacy parts while supporting modern low-power sleep states.

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