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

KHACHIMO

KHACHIMO 48V 12000W ATX Power Supply FSPSJ6-1200WS

SKU CH-KSK7-Z01RP

A 12000 W 48 V ATX power supply with 80 PLUS Gold efficiency, Modern Standby support, zero-RPM fan mode and resonant LLC topology with DC-to-DC conversion

  • TypeATX
  • Fast wake-from-sleep with Modern Standby support
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Fan stays off at low loads for silent running
  • Resonant LLC plus DC-to-DC gives clean stable power
  • 12000 W output at 48 V for demanding systems

48V 12000W ATX Power Supply

The KHACHIMO FSPSJ6-1200WS is a high-output ATX power supply designed for systems running on a 48V DC input. It delivers up to 12000W of power for demanding workstations or server deployments. The unit carries 80 PLUS Gold certification for high efficiency. Modern Standby compatibility ensures rapid wake times and improved low-load efficiency.

Resonant LLC Topology with DC-to-DC

This design uses a resonant LLC topology paired with DC-to-DC conversion to provide clean, consistent power delivery. The architecture reduces coil whine for quieter operation and supports more energy-efficient sleep states. It replaces older topologies that generate more electrical noise and heat. The jump is worth it for builds where acoustic performance and power quality are priorities.

Zero RPM Fan Mode and Build Fit

A Zero RPM fan mode stops the cooling fan entirely at low and medium loads for near-silent operation. The ATX form factor fits standard mounting points in compatible chassis. High efficiency lowers overall system heat output, easing case airflow requirements. Builders needing AC input or lower wattage units should look elsewhere.

Highlights

  • Fast wake-from-sleep with Modern Standby support
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Fan stays off at low loads for silent running
  • Resonant LLC plus DC-to-DC gives clean stable power
  • 12000 W output at 48 V for demanding systems

Specifications

TypeATX

Questions about this item

Does the 48 V 12000 W ATX unit fit a standard ATX case opening?

It uses the ATX form factor, so it mounts in any case with a standard ATX power-supply cutout and four rear mounting screws.

Which cables must be connected for Modern Standby to work correctly?

Connect the 24-pin ATX cable, the 4+4-pin CPU cable, and all required PCIe or peripheral cables; the firmware handles the low-power handshake automatically.

What part will need attention after several years of continuous 1200 W load?

The internal fan is the only moving component; if bearing noise appears, replace the fan assembly to restore Zero RPM Mode silence.

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