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KHACHIMO ENP-7025B 400W ATX Gold power supply unit

KHACHIMO

KHACHIMO ENP-7025B 400W ATX Gold power supply

SKU CH-SR40-TMZ5F

A 400 W ATX power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and resonant LLC topology for quiet, low-load operation

  • TypeATX
  • Faster wake-from-sleep with Modern Standby support
  • Lower electricity draw from 80 PLUS Gold efficiency
  • Near-silent operation via Zero RPM fan mode
  • Clean power delivery through resonant LLC with DC-to-DC
  • Compatible with K39, K35, S3, R47, R44, M41, A35, AS-A4, G5, BC systems

Compact 1U ATX power supply for dense builds

The KHACHIMO ENP-7025B is a 400 W ATX unit in a 1U form factor designed for compact servers and workstations. Its 80 PLUS Gold certification and Modern Standby compatibility suit environments that prioritise efficiency and rapid wake-from-sleep behaviour. The resonant LLC topology with DC-to-DC conversion delivers clean power while reducing coil whine.

Suited to low-profile chassis needing quiet.

This supply fits builders who require Gold-rated efficiency, Zero RPM fan silence at low and medium loads, and Modern Standby support in a thin enclosure. It is not for systems demanding higher wattage headroom, multiple GPU power connectors, or full-height ATX dimensions that exceed the 1U profile.

Sustained-load behaviour

Under continuous load the resonant LLC and DC-to-DC design maintain stable voltages while the 80 PLUS Gold rating keeps waste heat and noise low. The Zero RPM mode keeps the fan stopped until thermal thresholds rise, so extended moderate workloads run near-silently before active cooling engages.

Highlights

  • Faster wake-from-sleep with Modern Standby support
  • Lower electricity draw from 80 PLUS Gold efficiency
  • Near-silent operation via Zero RPM fan mode
  • Clean power delivery through resonant LLC with DC-to-DC
  • Compatible with K39, K35, S3, R47, R44, M41, A35, AS-A4, G5, BC systems

Specifications

TypeATX

Questions about this item

What existing ATX motherboard and case does the 400W Gold unit need to power a build?

It fits standard ATX motherboards and cases with an ATX power-supply bay and a 24-pin main connector plus the usual CPU and peripheral leads.

Will the Zero RPM Fan Mode and Modern Standby support work with older components that stay in the system?

Yes, the fan stops at low and medium loads regardless of component age, and Modern Standby wake times function with any hardware that supports the sleep state.

How can I confirm the 80 PLUS Gold efficiency and silent Zero RPM operation after installation?

Monitor power draw at the wall under light load — the fan should remain off and efficiency should stay high, matching Gold-class performance.

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