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

KHACHIMO

KHACHIMO D14-500P1A 400W 500W ATX power supply

SKU CH-WX2P-7TA22

ATX power supply rated 400 W continuous with 500 W peak, 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support

  • Product typeATX
  • Modern Standby compatibility enables extremely fast wake-from-sleep and better low-load efficiency
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption, less noise, and cooler temperatures
  • Zero RPM fan mode stops the cooling fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • Rated 400 W continuous and 500 W peak output for reliable ATX system power

Efficient ATX Power Supply

This KHACHIMO unit delivers a continuous 400 W and peaks at 500 W from a standard ATX form factor. It carries 80 PLUS Gold certification and uses a resonant LLC topology with DC-to-DC conversion for stable voltage regulation. Modern Standby compatibility enables rapid wake-from-sleep transitions and improved low-load efficiency. The design targets builders who want quiet, efficient power for mainstream systems.

Suits Quiet-Focused Builds

The Zero RPM fan mode stops the fan completely at low and medium loads, making it a good fit for noise-sensitive workstations or home-office PCs. Builders who need more than 400 W of sustained output or who require multiple high-power GPU connectors should look at higher-capacity units instead.

Sustained-Load Behaviour

Under continuous load the resonant LLC and DC-to-DC stages maintain clean power delivery while the fan spins up only when thermal conditions demand it. Gold-rated efficiency keeps waste heat and operating noise lower than bronze-class supplies during extended sessions. Modern Standby support ensures the platform remains responsive after long idle periods.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $147.99
Typical for this category: the median of 10,869 items is $142.99.

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Specifications

Product
Product typeATX

Questions about this item

What motherboard power connectors does the ATX D14-500P1A require to be present on the motherboard?

The ATX form factor uses a standard 24-pin main connector and a 4-pin or 8-pin CPU power connector; your motherboard must provide both for the supply to work.

Will the 80 PLUS Gold certified 400W unit deliver stable power to an older graphics card that only needs a 6-pin PCIe connector?

The DC-to-DC conversion and resonant LLC topology provide clean, consistent power, so the unit can reliably feed legacy GPUs with 6-pin connectors within its rated output.

How can I confirm the Zero RPM fan mode is active after building the system?

At low and medium loads the cooling fan stops completely; listen for silence or watch the fan blades — if they are stationary while the PC is idle, the mode is working.

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