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Rectangular silver ATX power supply unit with cooling fan and cable connectors

KHACHIMO

KHACHIMO C9400 DC 3200W power supply

SKU CH-0AE2-078EC

An 80 PLUS Gold ATX unit delivering 3200 W with zero-RPM fan mode and resonant LLC topology for silent, efficient power

  • 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
  • DC-to-DC conversion enables more energy-efficient sleep states for improved system responsiveness

3200W ATX power supply for high-density systems

This KHACHIMO C9400 unit delivers 3200W of continuous DC power in a standard ATX form factor. It targets servers, workstations and compute clusters that require a single high-capacity source rather than multiple smaller units. The design supports modern standby states for rapid wake-up and improved efficiency at idle. Builders needing redundant or hot-swap configurations should look elsewhere.

80 PLUS Gold efficiency with Zero RPM fan mode

Certified 80 PLUS Gold, the supply maintains high efficiency across typical loads, reducing waste heat and overall power draw. A Zero RPM mode stops the fan completely at low and medium loads, providing near-silent operation during routine tasks. Resonant LLC topology combined with DC-to-DC conversion keeps output clean and suppresses coil whine even when the fan is spinning. Acoustic profile stays low in everyday use.

Resonant LLC and DC-to-DC topology for stable rails

The resonant LLC front end and DC-to-DC secondary regulation deliver tight voltage regulation and minimal ripple across all rails. This topology also enables deeper, more energy-efficient sleep states supported by modern operating systems. Standard ATX mounting and connector layout allow drop-in installation into compatible chassis without adapter cables. Verify that your case and backplane can accommodate the unit’s physical depth before ordering.

Points forts

  • 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
  • DC-to-DC conversion enables more energy-efficient sleep states for improved system responsiveness

Caractéristiques

TypeATX

Questions sur cet article

How do I install the C9400 3200W unit in a standard ATX case and which step do builders often miss?

Mount the PSU with its fan facing the case vent, secure it with four screws, then connect the 24-pin ATX, CPU and GPU cables; the step often missed is plugging the motherboard’s 8-pin (or 4+4) CPU power connector, which the DC-to-DC design requires for stable Modern Standby wake-up.

What maintenance or replacement will this 80 PLUS Gold supply need over its lifetime?

The Zero RPM fan only spins above medium load, so dust buildup is minimal; plan to blow out the heatsink fins once a year and replace the fan bearing if noise appears after several years of continuous high-load operation.

Which limit appears first when the C9400 runs at sustained 3200W output?

The 80 PLUS Gold efficiency curve drops above 80 % load, so internal temperatures rise first; the resonant LLC topology protects voltage regulation, but the cooling fan will ramp to maximum speed before any protective shutdown engages.

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