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Rectangular ATX power supply unit in matte black finish with cooling fan visible

KHACHIMO

KHACHIMO 300W ATX power supply 55A 80 PLUS Gold

SKU CH-DPM4-FP4KF

Delivers 300 W ATX power with 80 PLUS Gold efficiency, 55 A on the 5 V rail, Modern Standby support, zero-RPM fan mode and resonant LLC topology for quiet, stable output

  • Product typeATX
  • Fast wake-from-sleep with Modern Standby support
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Fan stops at low loads for silent running
  • Resonant LLC topology with DC-to-DC gives clean power
  • 55 A on the 5 V rail delivers 300 W

KHACHIMO 300W ATX Power Supply

The KHACHIMO 300W ATX power supply delivers 55A on the 5V rail for systems that prioritise efficiency and quiet operation. It suits compact or office builds where a high-wattage unit would be unnecessary. The 80 PLUS Gold certification confirms strong energy efficiency across typical loads. Modern Standby compatibility allows near-instant wake times from sleep states.

Build Integration and Space Savings

This unit fits a standard ATX mounting pattern and uses DC-to-DC conversion with a resonant LLC topology to reduce cable clutter from legacy voltage rails. Zero RPM fan mode eliminates fan noise entirely at low and medium loads, freeing the acoustic budget for other components. Clean power delivery supports stable operation of energy-efficient sleep states. The design suits cases where silence matters more than maximum headroom.

Sustained Load Behaviour

Under continuous load the 80 PLUS Gold rating ensures high efficiency, limiting waste heat and keeping internal temperatures lower. The resonant LLC topology maintains tight voltage regulation and reduces coil whine during prolonged use. Zero RPM mode remains inactive once the load exceeds its threshold, engaging active cooling only when needed. The 300W capacity sets a firm ceiling for sustained power draw.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $139.99
Typical for this category: the median of 10,869 items is $142.99.

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Specifications

Product
Product typeATX

Questions about this item

What is the maximum current on the 5 V rail before it hits its limit?

The 5 V rail is rated for 55 A, which is the highest single-rail current this unit provides.

How quiet is the fan when the power supply runs continuously at moderate load?

Zero RPM Fan Mode keeps the fan stopped at low and medium loads, so the unit stays near-silent during typical all-day use.

Which motherboard power connectors must already be present for this ATX unit to work?

A standard 24-pin ATX main connector and the matching 4-pin or 8-pin CPU power connector are required on the motherboard.

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