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Rectangular black ATX power supply unit with ventilation grille and cable bundle

KHACHIMO

KHACHIMO 450W 550W ATX Power Supply 80 PLUS Gold

SKU CH-QDDX-Y18HM

An ATX power supply delivering 450W or 550W with 80 PLUS Gold efficiency, Modern Standby support, zero-RPM fan mode and LLC resonant topology for quiet, stable power

  • TypeATX
  • Fast wake-from-sleep and better low-load efficiency with Modern Standby support
  • High efficiency operation lowers power draw, noise and heat via 80 PLUS Gold certification
  • Near-silent running at low and medium loads through Zero RPM fan mode
  • Clean, consistent power and reduced coil whine from Resonant LLC topology with DC-to-DC conversion
  • ATX form factor fits standard desktop builds for 450W and 550W units

ATX Power Supply for Modern Standby Systems

This 80 PLUS Gold certified unit delivers 450W and 550W options built for PCs that use Modern Standby. The resonant LLC topology with DC-to-DC conversion provides clean power and supports efficient sleep states. It targets builders who want high efficiency and quiet operation in a standard ATX form factor.

Zero RPM Fan Mode and Low-Load Efficiency

At low and medium loads the cooling fan stops completely for near-silent running. Modern Standby compatibility ensures extremely fast wake-from-sleep times and better low-load efficiency. The design reduces coil whine for quieter operation during everyday desktop use.

No Modular Cables or Software Suite Included

The unit ships without modular cables, so cable routing depends on the fixed harness supplied. No monitoring or control software is bundled with the power supply. Buyers who want fully modular cabling or software-based fan curves will need a different model.

Highlights

  • Fast wake-from-sleep and better low-load efficiency with Modern Standby support
  • High efficiency operation lowers power draw, noise and heat via 80 PLUS Gold certification
  • Near-silent running at low and medium loads through Zero RPM fan mode
  • Clean, consistent power and reduced coil whine from Resonant LLC topology with DC-to-DC conversion
  • ATX form factor fits standard desktop builds for 450W and 550W units

Specifications

TypeATX

Questions about this item

What does the 80 PLUS Gold rating mean for actual power draw?

80 PLUS Gold certification means the unit meets high efficiency targets at typical loads, so less AC power is wasted as heat and the system runs cooler.

What physical space does this ATX power supply need inside the case?

It uses the standard ATX form factor, so it fits any case with a regular ATX PSU bay and the usual four mounting screws.

Which cables must be connected for a working install, and which step is often missed?

Connect the 24-pin motherboard cable, the CPU power cable, and any GPU or drive cables needed; the step most often missed is seating the 24-pin connector fully until it clicks.

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