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

KHACHIMO

KHACHIMO PRIME450 450W 550W power supply

SKU CH-A6WX-83KCN

An 80 PLUS Gold ATX unit rated for 450 W continuous and 550 W peak, with Zero RPM fan mode and Modern Standby support

  • TypeATX
  • Modern Standby support for extremely fast wake-from-sleep
  • 80 PLUS Gold efficiency lowers power draw and heat
  • Zero RPM fan mode stops the fan at low loads
  • Resonant LLC topology with DC-to-DC gives clean, stable power
  • ATX form factor fits standard desktop cases

450 W ATX power supply for modern PCs

The KHACHIMO PRIME450 delivers a continuous 450 W output with a 550 W peak rating in a standard ATX form factor. It targets builders who need efficient, quiet power for mainstream systems that support modern sleep states. The unit carries 80 PLUS Gold certification for high efficiency across typical loads.

Thermals, noise and power draw in normal use

A zero-RPM fan mode stops the fan completely at low and medium loads for near-silent operation. Resonant LLC topology with DC-to-DC conversion supplies clean power while reducing coil whine. The Gold-rated design lowers waste heat and overall power consumption during everyday workloads.

Modern Standby compatibility for fast wake times

This supply is built to meet Modern Standby requirements, enabling extremely fast wake-from-sleep transitions and improved low-load efficiency. Buyers whose platforms do not support Modern Standby will not gain those specific sleep-state benefits.

Highlights

  • Modern Standby support for extremely fast wake-from-sleep
  • 80 PLUS Gold efficiency lowers power draw and heat
  • Zero RPM fan mode stops the fan at low loads
  • Resonant LLC topology with DC-to-DC gives clean, stable power
  • ATX form factor fits standard desktop cases

Specifications

TypeATX

Questions about this item

How do I install the KHACHIMO PRIME450 ATX power supply and which step is often missed?

Mount the ATX unit in the case with four screws, connect the 24-pin motherboard and CPU power cables, then enable Modern Standby in the BIOS so the fast wake-from-sleep feature actually works.

What maintenance or replacement will the PRIME450 need over time?

The Zero RPM fan only spins above low and medium loads, so dust builds up more slowly; clean the intake grill with compressed air once a year and replace the unit if coil whine appears after the fan bearing wears out.

Which limit appears first when the PRIME450 runs at sustained load?

The 450 W continuous rating is reached before the 550 W peak figure, so prolonged heavy draws will hit the rated ceiling and trigger protection.

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