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Silver ATX power supply unit with fan grille and cable connectors

KHACHIMO

KHACHIMO P1A-R0400-D-A1 400W power supply

SKU CH-AQNX-5PJBK

ATX 400 W unit with 80 PLUS Gold efficiency, Modern Standby support, Zero RPM fan mode and resonant LLC topology for clean, quiet power

  • TypeATX
  • Fast wake and low-load efficiency with Modern Standby support
  • Lower consumption, noise and heat from 80 PLUS Gold efficiency
  • Near-silent operation at low loads via Zero RPM fan mode
  • Clean, consistent power and reduced coil whine from Resonant LLC with DC-to-DC
  • ATX form factor fits standard desktop builds

400 W ATX power supply

The KHACHIMO P1A-R0400-D-A1 is a new 400 W ATX power supply built for mainstream desktop builds. It targets system integrators and DIY builders who need reliable, efficient power delivery for standard office or home computers. Modern Standby compatibility ensures rapid wake-from-sleep performance for daily workflows.

80 PLUS Gold efficiency

The single specification that decides fit is the 80 PLUS Gold certification, which guarantees high efficiency at typical loads. This reduces overall power draw, cuts waste heat and helps keep system noise lower. Builders who need a higher wattage ceiling for multi-GPU or heavy workstation configurations should look elsewhere.

Zero RPM fan and LLC topology

Under sustained load the resonant LLC topology with DC-to-DC conversion delivers clean, stable power while minimising coil whine. The Zero RPM fan mode keeps the cooling fan off at low and medium loads for near-silent operation, spinning up only when thermal demand rises. This behaviour suits long work sessions where acoustic comfort matters.

Points forts

  • Fast wake and low-load efficiency with Modern Standby support
  • Lower consumption, noise and heat from 80 PLUS Gold efficiency
  • Near-silent operation at low loads via Zero RPM fan mode
  • Clean, consistent power and reduced coil whine from Resonant LLC with DC-to-DC
  • ATX form factor fits standard desktop builds

Caractéristiques

TypeATX

Questions sur cet article

What does the 400 W rating mean for my build?

It is the maximum continuous power the unit can deliver across all rails, so the total draw of your CPU, GPU, drives and peripherals should stay below that figure.

How does the ATX form factor limit where I can install it?

The unit follows the standard ATX dimensions, so it fits any case with an ATX PSU bay and uses the usual four mounting screws.

What does the 80 PLUS Gold badge tell me about everyday efficiency?

It certifies the supply meets high efficiency targets at typical loads, meaning less waste heat and lower electricity use during normal operation.

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