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KHACHIMO

KHACHIMO 3910 300W 8Pin power supply

SKU CH-6594-69KZ5

An 80 PLUS Gold ATX unit delivering 300 W with zero-RPM fan mode for silent low-load operation

  • TypeATX
  • Fast wake and low-load efficiency with Modern Standby support
  • High efficiency cuts power draw and heat with 80 PLUS Gold
  • Near-silent operation at low and medium loads via Zero RPM fan mode
  • Clean, stable power delivery through resonant LLC and DC-to-DC conversion
  • Quieter running with reduced coil whine from advanced topology

300W ATX power supply for modern standby PCs

The KHACHIMO 3910 delivers 300W through a single 8-pin connector and meets the ATX form factor. It targets builders who need a compact, efficient unit for small-form-factor or office systems that rely on fast wake-from-sleep behaviour. Buyers who require multiple PCIe power cables or higher continuous output for discrete graphics cards should look elsewhere.

Sustained load behaviour with gold efficiency

The 80 PLUS Gold certification means the unit maintains high efficiency across typical workloads, reducing waste heat and keeping internal temperatures lower during extended use. Resonant LLC topology with DC-to-DC conversion supplies clean, consistent power under continuous demand while minimising coil whine. The zero-RPM fan mode stays active through low and medium loads, so the power supply runs silently until thermal conditions require active cooling.

Modern standby compatibility decides fit

This power supply is built for Modern Standby support, enabling extremely fast wake times and improved low-load efficiency that standard ATX units may not provide. If the target motherboard and operating system do not implement Modern Standby, the key advantage of this model goes unused. Verify platform support before purchase.

Highlights

  • Fast wake and low-load efficiency with Modern Standby support
  • High efficiency cuts power draw and heat with 80 PLUS Gold
  • Near-silent operation at low and medium loads via Zero RPM fan mode
  • Clean, stable power delivery through resonant LLC and DC-to-DC conversion
  • Quieter running with reduced coil whine from advanced topology

Specifications

TypeATX

Questions about this item

Does the 300W 80 PLUS Gold unit stay quiet and cool when it runs all day?

The 80 PLUS Gold rating means high efficiency, so less waste heat and lower fan speeds. Zero RPM mode stops the fan completely at low and medium loads for near-silent operation, and the resonant LLC topology with DC-to-DC conversion reduces coil whine.

What connectors must my build already have for this ATX supply to work?

The unit is an ATX-type supply with an 8-pin connector included. Your motherboard needs a matching 8-pin EPS or 4+4-pin CPU power socket and standard 24-pin ATX main power socket.

Will the Modern Standby support work with my older motherboard that only has traditional sleep states?

Modern Standby compatibility enables faster wake times and efficient low-power states on supported platforms. On older hardware without Modern Standby the supply still delivers clean power via its resonant LLC and DC-to-DC design, but the enhanced sleep features will not be active.

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