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Rectangular metal ATX power supply unit with matte black finish and visible cooling fan grille

KHACHIMO

KHACHIMO 500W 80 Plus Bronze SS-500ET SS-500ES ATX Power Supply

SKU CH-PJVA-PQN44

An ATX power supply delivering 500 watts with 80 Plus Gold efficiency, zero-RPM fan mode and Modern Standby support

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

500W ATX Power Supply

The KHACHIMO 500W ATX power supply delivers 500 watts of continuous power for desktop builds. It carries 80 PLUS Gold certification for high efficiency across typical loads. Modern Standby compatibility enables extremely fast wake-from-sleep times and improved low-load efficiency. Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine.

Builders prioritising quiet operation

The Zero RPM fan mode stops the cooling fan entirely at low and medium loads for near-silent operation. This suits systems where acoustic output matters and where Modern Standby sleep states are used. Buyers who need higher wattage for multi-GPU configurations or extreme overclocking should look at higher-capacity units. The ATX form factor fits standard chassis designs without special mounting requirements.

Sustained-load behaviour with Gold-rated efficiency

Under sustained load the 80 PLUS Gold rating keeps efficiency high, reducing waste heat and lowering overall power draw. The resonant LLC topology with DC-to-DC conversion maintains tight voltage regulation during prolonged operation. Zero RPM mode remains inactive once load exceeds the medium threshold, so the fan spins to manage thermals during extended heavy workloads. Coil whine is minimised by the topology choice even when the unit runs continuously at significant output.

Highlights

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

Specifications

TypeATX

Questions about this item

What motherboard power connector does the KHACHIMO 500W unit require?

It uses a standard ATX 24-pin main connector plus a 4+4 pin CPU connector, so any current ATX motherboard will fit.

Will the Zero RPM fan mode stay silent when paired with an older GPU that idles at higher power draw?

The fan stops only at low and medium loads; an older GPU idling above that threshold will keep the fan spinning quietly.

How can I confirm the 80 Plus Gold efficiency is active after installation?

Monitor AC input versus DC output with a power meter; at typical loads you should see efficiency above 80 percent.

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