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Rectangular silver ATX power supply unit with cooling fan grille and cable connectors

KHACHIMO

KHACHIMO 300W ATX Power Supply DPSN-300DB-1E

SKU CH-G2W7-4KANA

300W ATX power supply with 80 PLUS Gold efficiency, Modern Standby support, Zero RPM fan mode and resonant LLC topology with DC-to-DC conversion for clean, quiet power

  • TypeATX
  • Modern Standby support for near-instant wake from sleep
  • 80 PLUS Gold efficiency reduces power draw and heat
  • Zero RPM fan mode delivers silent operation at low loads
  • Resonant LLC topology with DC-to-DC provides clean, stable power
  • ATX form factor fits standard desktop chassis

300W ATX Power Supply

The KHACHIMO 300W ATX power supply delivers 300 watts of continuous power for desktop systems. Its 80 PLUS Gold certification confirms high efficiency across typical loads, reducing waste heat and electricity draw. The unit suits builders assembling compact or office-focused PCs where moderate power is sufficient.

Thermals, noise and power draw

Zero RPM fan mode stops the cooling fan completely at low and medium loads, providing near-silent operation during everyday tasks. Resonant LLC topology with DC-to-DC conversion supplies clean, consistent power while reducing coil whine. Modern Standby compatibility enables extremely fast wake-from-sleep times and better low-load efficiency.

Bundled features and software

Modern Standby support changes how the system handles sleep states, allowing quicker resume and lower idle consumption without extra configuration. The 80 PLUS Gold rating means the unit meets strict efficiency targets that translate to cooler running temperatures and less fan activity. Resonant LLC and DC-to-DC conversion work together to minimise electrical noise and improve voltage stability.

Highlights

  • Modern Standby support for near-instant wake from sleep
  • 80 PLUS Gold efficiency reduces power draw and heat
  • Zero RPM fan mode delivers silent operation at low loads
  • Resonant LLC topology with DC-to-DC provides clean, stable power
  • ATX form factor fits standard desktop chassis

Specifications

TypeATX

Questions about this item

How do I install this ATX power supply and which cable connection is most often missed?

Mount the unit in the case with four screws, plug the 24-pin motherboard connector and the 4+4-pin CPU power cable — the CPU cable is the one builders forget.

What maintenance will this 300W unit need over its lifetime?

Clean dust from the fan intake every few months; the Zero RPM mode means the fan spins less, so dust builds up more slowly.

What limit appears first when this Gold-rated supply runs at high load for hours?

The 300W maximum output is the first ceiling; sustained draws above that trip the over-power protection.

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