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

KHACHIMO

KHACHIMO 231A Power Supply 198139A-01-RHPS231A

SKU CH-WPWE-VXYKQ

ATX power supply with 80 PLUS Gold efficiency, Modern Standby compatibility, Zero RPM fan mode and resonant LLC topology with DC-to-DC conversion

  • TypeATX
  • Modern Standby compatible for extremely fast wake-from-sleep
  • 80 PLUS Gold certified for high efficiency and lower power consumption
  • Zero RPM fan mode stops the fan at low and medium loads
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power
  • ATX type power supply rated at 231A

KHACHIMO 231A ATX Power Supply

The KHACHIMO 231A is a new ATX power supply built for modern desktop builds that value quiet, efficient power delivery. It carries 80 PLUS Gold certification and supports Modern Standby for rapid wake-from-sleep performance. The unit uses resonant LLC topology with DC-to-DC conversion to provide clean, consistent output and reduce coil whine. Its zero RPM fan mode keeps the system near-silent at low and medium loads.

Replacing an older or lower-efficiency ATX unit

Upgrading from a non-Gold or group-regulated supply brings measurable gains in efficiency, acoustics, and sleep-state support. The jump is worth it when your current unit lacks Modern Standby compatibility, produces noticeable fan noise at idle, or cannot deliver stable power for newer low-power sleep states. Builders moving to a platform that demands tighter voltage regulation and quieter operation will benefit most from this design.

Verify ATX form-factor clearance

Confirm your case accepts a standard ATX power supply and that the included cables match your motherboard, GPU, and storage connectors. Check that your system firmware supports Modern Standby to use the fast wake and low-load efficiency features. Ensure the total power draw of your components fits within the unit’s rated capacity before ordering.

Highlights

  • Modern Standby compatible for extremely fast wake-from-sleep
  • 80 PLUS Gold certified for high efficiency and lower power consumption
  • Zero RPM fan mode stops the fan at low and medium loads
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power
  • ATX type power supply rated at 231A

Specifications

TypeATX

Questions about this item

Does the 231A power supply fit a standard ATX case?

The unit follows the ATX form factor so it mounts in any standard ATX chassis using the usual four screw holes.

What is the most common mistake when installing the 198139A-01-RHPS231A?

Builders often forget to connect both the 24-pin ATX motherboard cable and the 8-pin CPU power cable before first boot.

When should the fan on this 80 PLUS Gold unit be cleaned or replaced?

The Zero RPM mode keeps the fan off at low loads; clean the blades once a year and replace the fan only if it becomes noisy or stops spinning under heavy load.

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