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Rectangular black ATX power supply unit with cooling fan and cable bundle

KHACHIMO

KHACHIMO CWT-400BDP 400W 80 Plus Gold power supply

SKU CH-ZZV1-X148G

An ATX power supply delivering 400W with 80 Plus Gold efficiency, Modern Standby support, zero-RPM fan mode and LLC resonant DC-to-DC topology

  • TypeATX
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Zero RPM fan mode keeps the system silent at low load
  • Modern Standby support gives near-instant wake from sleep
  • Resonant LLC with DC-to-DC delivers clean, stable voltage
  • ATX form factor fits standard desktop builds

400W ATX power supply for modern standby PCs

This 400 watt ATX unit delivers 80 Plus Gold certified efficiency for lower energy draw and reduced heat. It is built for systems that use modern standby sleep states, enabling extremely fast wake times and improved low-load performance. The resonant LLC topology with DC-to-DC conversion supplies clean, consistent power to sensitive components.

Zero RPM fan mode and quiet topology

At low and medium loads the cooling fan stops completely, providing near-silent operation during everyday tasks. The resonant LLC design further reduces coil whine, contributing to a quieter build overall. Standard ATX dimensions and connector layout allow straightforward installation in compatible chassis without special mounting requirements.

Practical limits of the 400 watt rating

The 400 watt maximum output restricts this unit to systems with modest total power draw, such as office workstations or entry-level configurations. Builders planning high-end graphics cards or multiple storage arrays will need a higher capacity supply. The Gold efficiency rating helps minimise waste heat within this fixed power envelope.

Points forts

  • 80 PLUS Gold efficiency cuts power draw and heat
  • Zero RPM fan mode keeps the system silent at low load
  • Modern Standby support gives near-instant wake from sleep
  • Resonant LLC with DC-to-DC delivers clean, stable voltage
  • ATX form factor fits standard desktop builds

Caractéristiques

TypeATX

Questions sur cet article

What does the 80 Plus Gold certification mean for this 400 W unit?

It guarantees high efficiency at typical loads, reducing power draw, heat output and fan noise compared with lower-rated supplies.

What physical space does this ATX power supply need inside the case?

It fits a standard ATX mounting footprint with four rear screws and requires enough depth for a typical PSU body.

How is the unit installed and which step is often missed?

Mount it with four screws, connect the 24-pin ATX, CPU and peripheral cables, then ensure the mains voltage switch matches your region before powering on.

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