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

KHACHIMO

KHACHIMO 450W 650W Power Supply

SKU CH-GZQ4-Q7WVX

An 80 PLUS Gold ATX power supply with Zero RPM fan mode and Modern Standby support for silent, efficient operation

  • TypeATX
  • 80 PLUS Gold certification cuts power waste and heat
  • Zero RPM fan mode stops the fan at low loads for silent running
  • Resonant LLC topology with DC-to-DC conversion delivers clean power and reduces coil whine
  • Modern Standby support enables extremely fast wake-from-sleep times
  • ATX form factor fits standard desktop chassis

ATX Gold Power Supply for Modern Standby Systems

This ATX power supply carries 80 PLUS Gold certification and supports Modern Standby for rapid wake-from-sleep. Resonant LLC topology with DC-to-DC conversion delivers clean power and reduces coil whine. A zero-RPM fan mode keeps the unit silent at low and medium loads. It suits builders who want efficient, quiet operation in a standard ATX form factor.

Practical Limits of ATX Gold Efficiency

The 80 PLUS Gold rating guarantees high efficiency at typical loads, lowering consumption and heat output. Zero-RPM mode activates only at low and medium loads, so the fan will spin under heavier demand. Modern Standby compatibility depends on matching motherboard and operating-system support. The unit does not address needs for higher wattage headroom, modular cabling, or server-grade redundancy.

Replacing Lower-Efficiency or Noisy Units

This supply replaces older bronze-rated or non-certified units that run hotter and louder. The jump is worthwhile when faster sleep wake times, quieter low-load operation, and reduced coil whine are priorities. It does not suit builders who need more than the rated output, fully modular cables, or specialised form factors such as SFX or TFX.

Highlights

  • 80 PLUS Gold certification cuts power waste and heat
  • Zero RPM fan mode stops the fan at low loads for silent running
  • Resonant LLC topology with DC-to-DC conversion delivers clean power and reduces coil whine
  • Modern Standby support enables extremely fast wake-from-sleep times
  • ATX form factor fits standard desktop chassis

Specifications

TypeATX

Questions about this item

Should I pick the 450 W or the 650 W version?

Choose the 450 W unit for systems with a single mid-range GPU and modest storage; step up to 650 W if you plan a higher-end graphics card, multiple drives or future upgrades.

What does the 80 PLUS Gold rating mean for daily use?

The supply meets 80 PLUS Gold efficiency targets, so it wastes less power as heat, runs cooler and helps keep fan noise down under normal loads.

How does the ATX form factor limit where this PSU fits?

The ATX design fits standard ATX cases and motherboards; it will not mount in SFX or TFX chassis without an adapter bracket.

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