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KHACHIMO 400W ATX power supply unit in black metal casing with cooling fan visible

KHACHIMO

KHACHIMO 400W ATX Power Supply M1R-2400V M1R2-5400V0H

SKU CH-KFDB-XWQ7N

A 400 W ATX power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and resonant LLC plus DC-to-DC topology for clean, quiet power and Modern Standby support

  • TypeATX
  • Modern Standby support enables extremely fast wake-from-sleep times
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • 400W ATX power supply with Modern Standby compatibility and 80 PLUS Gold efficiency

400W ATX Power Supply

The KHACHIMO 400W ATX unit delivers 80 PLUS Gold certified efficiency for desktop builds that prioritise low power draw and quiet operation. It suits office workstations, home PCs and light-content-creation rigs that do not demand extreme wattage headroom. Modern Standby compatibility ensures rapid wake-from-sleep response for productivity workflows.

Sustained load behaviour

Under continuous demand the Resonant LLC topology with DC-to-DC conversion maintains clean, consistent power delivery while suppressing coil whine. The 80 PLUS Gold rating keeps efficiency high across the load curve, reducing waste heat and allowing the cooling fan to remain inactive for longer periods. Zero RPM fan mode engages at low and medium loads for near-silent running.

Upgrade context

This supply replaces older bronze-rated or non-modular units that struggle with Modern Standby sleep states and generate audible fan noise at idle. The efficiency jump is worthwhile when building or refreshing a system that spends long hours in low-power states or demands quieter acoustics. It is not for builds requiring multi-GPU power budgets or server-grade redundancy.

Points forts

  • Modern Standby support enables extremely fast wake-from-sleep times
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • 400W ATX power supply with Modern Standby compatibility and 80 PLUS Gold efficiency

Caractéristiques

TypeATX

Questions sur cet article

Does the Zero RPM fan mode keep the 400W unit silent during typical daily workloads?

The Zero RPM Fan Mode stops the fan completely at low and medium loads, so the power supply runs silently until the load rises high enough to need active cooling.

What motherboard and CPU power connectors must my system provide for this ATX supply?

As a standard ATX power supply, it requires a 24-pin motherboard connector and a 4-pin or 8-pin CPU power connector to operate.

Will the Modern Standby compatibility work with my older motherboard that only supports traditional S3 sleep?

Modern Standby Compatible means the unit is designed for fast wake-from-sleep and low-load efficiency; it will still power an older S3-only board, but the faster sleep transitions require a Modern Standby-capable platform.

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