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

KHACHIMO

KHACHIMO RS-400-CAA-D3 400W 80 PLUS Gold power supply

SKU CH-4VGA-G0SB7

ATX power supply delivering 400W with 80 PLUS Gold efficiency, zero-RPM fan mode for silent low-load operation, and LLC resonant topology with DC-to-DC conversion for clean power

  • TypeATX
  • Faster wake-from-sleep with Modern Standby support
  • High 80 PLUS Gold efficiency lowers power draw and heat
  • Fan stops at low loads for near-silent running
  • Resonant LLC and DC-to-DC topology delivers clean stable power
  • ATX form factor fits standard desktop cases

Compact ATX power supply

The KHACHIMO RS-400-CAA-D3 is a 400W ATX power supply built for mainstream desktop builds. It carries 80 PLUS Gold certification, so it runs efficiently across typical loads. Modern Standby support enables rapid wake-from-sleep and improved low-load efficiency. A Zero RPM fan mode stops the fan entirely at low and medium loads for near-silent operation.

Suited for efficient mainstream PCs

This unit fits builders who want Gold-rated efficiency and quiet running in a standard ATX form factor. It works well for office machines, home PCs and light gaming rigs that stay within a 400W envelope. Systems with high-end graphics cards, multiple drives or heavy overclocking will exceed its capacity and should look at higher-wattage units.

400W continuous capacity with Gold headroom

The 400W rating delivers clean, consistent power through resonant LLC topology with DC-to-DC conversion, reducing coil whine and supporting efficient sleep states. It comfortably handles mid-range CPUs, a single mainstream GPU and several peripherals. Power-hungry configurations with overclocked components or dual graphics cards will run out of headroom.

Points forts

  • Faster wake-from-sleep with Modern Standby support
  • High 80 PLUS Gold efficiency lowers power draw and heat
  • Fan stops at low loads for near-silent running
  • Resonant LLC and DC-to-DC topology delivers clean stable power
  • ATX form factor fits standard desktop cases

Caractéristiques

TypeATX

Questions sur cet article

Does my motherboard need an ATX 24-pin and a 4/8-pin CPU connector to use this 400W unit?

Yes, the RS-400-CAA-D3 is an ATX power supply and provides the standard 24-pin motherboard connector plus a 4/8-pin EPS connector for the processor.

Will the Zero RPM fan mode still engage if I keep an older graphics card that draws steady power at idle?

The fan stays off at low and medium loads, so an older GPU idling within that range will not prevent silent operation.

How can I confirm the 80 PLUS Gold efficiency is active after installation?

Monitor AC draw versus DC load with a power meter; at typical loads the unit should exceed 80% efficiency, matching the Gold rating.

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