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Black ATX power supply unit with gold certification badge and cooling fan grille

KHACHIMO

KHACHIMO 450W ATX Power Supply PSR450-12AHD

SKU CH-7FB9-3F16G

A 450W ATX power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby compatibility for quiet, efficient desktop builds

  • TypeATX
  • Fast wake-from-sleep with Modern Standby support
  • Lower power draw and cooler running via 80 PLUS Gold efficiency
  • Near-silent operation at low loads with Zero RPM fan mode
  • Clean, stable power delivery using resonant LLC topology with DC-to-DC conversion
  • Reduced coil whine for quieter system operation

KHACHIMO 450W ATX Power Supply

The KHACHIMO PSR450-12AHD is a 450W ATX power supply designed for systems requiring Modern Standby compatibility. It suits builders who need fast wake-from-sleep responsiveness and high efficiency in a standard desktop form factor. This unit carries 80 PLUS Gold certification for reduced energy waste and heat output.

Integration with 80 PLUS Gold efficiency

The ATX form factor fits standard chassis layouts while the Gold-rated efficiency lowers overall power draw and thermal load on case airflow. Resonant LLC topology with DC-to-DC conversion delivers stable voltage rails, supporting modern low-power sleep states without requiring extra configuration. Builds needing redundant or hot-swap power modules cannot use this design.

Sustained load behaviour and acoustics

Under continuous demand the resonant LLC topology maintains clean power delivery while minimising coil whine. The Zero RPM fan mode keeps the unit silent at low and medium loads, spinning up only when thermal conditions require active cooling. This approach keeps acoustic output low during typical workloads without sacrificing thermal headroom.

Highlights

  • Fast wake-from-sleep with Modern Standby support
  • Lower power draw and cooler running via 80 PLUS Gold efficiency
  • Near-silent operation at low loads with Zero RPM fan mode
  • Clean, stable power delivery using resonant LLC topology with DC-to-DC conversion
  • Reduced coil whine for quieter system operation

Specifications

TypeATX

Questions about this item

What is the maximum continuous power output of the PSR450-12AHD?

The unit delivers up to 450W of continuous power for sustained loads.

Does the fan stay on constantly during all-day operation?

Zero RPM Fan Mode stops the fan entirely at low and medium loads, cutting noise and heat.

What motherboard power connector does this ATX supply require?

It uses the standard 24-pin ATX connector found on compatible motherboards.

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