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Compact 1U ATX power supply unit in matte black metal finish with rear fan grille

KHACHIMO

KHACHIMO 500W ATX Power Supply DPS-500AB-5B

SKU CH-31KX-NZY7P

A compact 1U 500 W ATX power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support

  • TypeATX
  • Modern Standby compatibility for faster wake-from-sleep times
  • 80 PLUS Gold certification reduces power draw and heat
  • Zero RPM fan mode stops the fan at low loads
  • Resonant LLC with DC-to-DC conversion delivers clean power and cuts coil whine
  • 500 W ATX output supports demanding system configurations

Compact 1U ATX power supply

The KHACHIMO DPS-500AB-5B delivers 500 W of continuous power in a 1U form factor suited to compact workstations and rack builds. It uses an ATX interface and carries 80 PLUS Gold certification for high efficiency across typical loads. Modern Standby compatibility allows extremely fast wake-from-sleep transitions and improved low-load efficiency. Builders needing higher wattage or a standard ATX depth unit should look elsewhere.

Thermals and acoustics at typical load

A Zero RPM fan mode stops the cooling fan entirely at low and medium loads for near-silent operation. The 80 PLUS Gold rating reduces waste heat, keeping internal temperatures lower during everyday workloads. Resonant LLC topology with DC-to-DC conversion minimises coil whine and supports efficient sleep states. Noise remains negligible during office tasks and media playback.

Sustained load behaviour

Under sustained load the resonant LLC topology with DC-to-DC conversion maintains clean, consistent power delivery. The Gold-certified platform limits temperature rise and keeps fan speeds moderate when the load persists. Zero RPM mode disengages automatically once thermal thresholds are reached, providing active cooling without abrupt speed jumps. The supply is designed for stable output during extended rendering or compute sessions.

Pluspunten

  • Modern Standby compatibility for faster wake-from-sleep times
  • 80 PLUS Gold certification reduces power draw and heat
  • Zero RPM fan mode stops the fan at low loads
  • Resonant LLC with DC-to-DC conversion delivers clean power and cuts coil whine
  • 500 W ATX output supports demanding system configurations

Specificaties

TypeATX

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How do I install the DPS-500AB-5B in a 1U chassis and which step is often missed?

Mount the 1U form factor unit with the four standard screws, then connect the 24-pin ATX, 8-pin EPS and peripheral cables; the step most builders miss is enabling Modern Standby in the motherboard BIOS so the fast wake-from-sleep feature actually works.

What maintenance or replacement will this 500W Gold unit need over time?

The 80 PLUS Gold efficiency and Zero RPM fan mode reduce dust buildup, but the fan bearing will eventually wear; plan to clean the intake vents yearly and replace the fan assembly if noise or vibration appears after several years of continuous use.

Which limit appears first when the supply runs at sustained load?

The 500 W continuous output rating is the first ceiling; once total system draw approaches 500 W the protection circuits will shut the unit down, so keep combined component draw below that figure for stable operation.

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