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Rectangular black ATX power supply unit with cooling fan grille and cable bundle

KHACHIMO

KHACHIMO MRG-3800V-R 800W ATX Power Supply

SKU CH-R74X-XGTWK

An 800 W ATX power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and resonant LLC topology for quiet, efficient operation

  • TypeATX
  • Modern Standby support for faster wake from sleep
  • 80 PLUS Gold efficiency reduces power draw and heat
  • Zero RPM fan mode keeps system silent at low load
  • Resonant LLC with DC-to-DC delivers clean, stable power
  • 800 W ATX output for high-performance builds

800W ATX PSU for Modern Standby PCs

The KHACHIMO MRG-3800V-R is an 800W ATX power supply built for systems that use Modern Standby sleep states. It suits builders who want 80 PLUS Gold efficiency and a Zero RPM fan mode for quiet low-load operation. The resonant LLC topology with DC-to-DC conversion delivers stable output for gaming or workstation workloads.

Standard ATX fit with silent fan behaviour

Installation follows the usual ATX mounting pattern and connector layout found in most current cases. The Zero RPM mode keeps the fan off until the load rises, so cable routing near the fan grille is straightforward. Coil whine is reduced by the LLC resonant design, though fan curves are fixed and cannot be customised in software.

Check ATX compatibility and connector count

Verify that your case accepts a standard ATX power supply and that the motherboard uses a 24-pin main connector plus the required CPU and PCIe leads. The unit supports Modern Standby wake times, so confirm the board implements that state. No adapter cables are included, so count the native plugs against your GPU and drive needs.

Highlights

  • Modern Standby support for faster wake from sleep
  • 80 PLUS Gold efficiency reduces power draw and heat
  • Zero RPM fan mode keeps system silent at low load
  • Resonant LLC with DC-to-DC delivers clean, stable power
  • 800 W ATX output for high-performance builds

Specifications

TypeATX

Questions about this item

How can I confirm the PSU is running at Gold efficiency after installation?

Use a watt-meter at the wall while the system idles and under load; the draw should reflect the 80 PLUS Gold rating for the stated 800 W capacity.

Which cables and accessories ship with the MRG-3800V-R unit?

The box contains the ATX power supply and the fixed cable set; mounting screws and a power cord are not included and must be sourced separately.

Is the 800 W version the right choice for a mid-range build?

The 800 W rating covers mainstream CPUs and single GPUs with headroom for Modern Standby sleep states and Zero RPM fan operation.

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