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Rectangular ATX power supply unit in matte black finish with cooling fan visible

KHACHIMO

KHACHIMO WM-ATX400-24-48 320W ATX power supply

SKU CH-TJM2-5CGWB

A 320 W ATX power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support for quiet, low-power systems

  • TypeATX
  • Modern Standby support for faster wake from sleep
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Zero RPM fan mode stops the fan at low load
  • Resonant LLC with DC-to-DC delivers clean, stable power
  • ATX form factor fits standard desktop cases

KHACHIMO 320W ATX Power Supply

The KHACHIMO WM-ATX400-24-48 is a 320W ATX power supply designed for modern desktop systems. It holds an 80 PLUS Gold certification for high efficiency and supports Modern Standby for rapid wake-from-sleep performance. The unit uses resonant LLC topology with DC-to-DC conversion to deliver clean power.

Suits builders who value quiet operation

Zero RPM fan mode stops the fan completely at low and medium loads, enabling near-silent performance. Resonant LLC topology reduces coil whine for quieter operation. This unit is not suited for systems requiring higher continuous output or an input voltage other than 220V AC.

Input voltage fixed at 220V AC

The power supply operates exclusively on a 220V AC input, as indicated by the model designation. Builders in regions with different mains voltage must select a unit rated for their local supply. All other specifications follow standard ATX form-factor expectations.

Points forts

  • Modern Standby support for faster wake from sleep
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Zero RPM fan mode stops the fan at low load
  • Resonant LLC with DC-to-DC delivers clean, stable power
  • ATX form factor fits standard desktop cases

Caractéristiques

TypeATX

Questions sur cet article

What motherboard power connectors does the WM-ATX400-24-48 require to be present on the board?

The unit follows the ATX form factor, so the motherboard must provide a standard 24-pin main power socket and a 4-pin or 8-pin CPU power socket.

Will the 320W output and 80 PLUS Gold efficiency work reliably with older components that draw higher peak currents?

The resonant LLC topology with DC-to-DC conversion delivers clean, consistent power and supports modern low-power sleep states, helping stability with legacy parts.

How can I confirm the Zero RPM fan mode is active after building the system?

At low and medium loads the cooling fan stops completely; listen for silence and check that the 80 PLUS Gold efficiency is reflected in lower wall-power draw.

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