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Standard ATX power supply unit in matte black finish with cooling fan and modular cable connectors visible

KHACHIMO

KHACHIMO Power Supply 3.3V 20A 100W ATX 80 PLUS Gold

SKU CH-X4J1-P6Q18

ATX power supply delivering 3.3V at 20A with 80 PLUS Gold efficiency and zero-RPM fan mode

  • TypeATX
  • Faster wake from sleep with Modern Standby support
  • 80 PLUS Gold certification cuts power draw and heat
  • Zero RPM fan mode keeps operation silent at low loads
  • Resonant LLC plus DC-to-DC topology delivers clean, stable power
  • 3 V rail rated for 20 A and 100 W output

ATX Power Supply for ECM100US03

This ATX power supply delivers 3.3 volts at 20 amps for a total of 100 watts. It is built as a direct replacement for the XP Power ECM100US03 unit. The design uses resonant LLC topology with DC-to-DC conversion to provide clean and consistent power output.

80 PLUS Gold Efficiency with Zero RPM Mode

The unit carries 80 PLUS Gold certification for high efficiency, lower power draw and cooler running. A Zero RPM fan mode stops the fan completely at low and medium loads for near-silent operation. Modern Standby compatibility enables extremely fast wake-from-sleep times and improved low-load efficiency.

100 Watt Capacity for Targeted Loads

The 100 watt rating comfortably handles systems designed around this specific power envelope. Builds requiring higher total wattage or different voltage distributions will need a larger or differently specified unit. It suits replacement or low-power projects matching the 3.3V 20A profile.

Highlights

  • Faster wake from sleep with Modern Standby support
  • 80 PLUS Gold certification cuts power draw and heat
  • Zero RPM fan mode keeps operation silent at low loads
  • Resonant LLC plus DC-to-DC topology delivers clean, stable power
  • 3 V rail rated for 20 A and 100 W output

Specifications

TypeATX

Questions about this item

What motherboard connector does this ATX power supply need to power a system?

It requires a standard ATX 24-pin motherboard connector plus the matching CPU and peripheral cables for your build.

Will this 100 W 3.3 V 20 A unit work with older components that draw less current on the 3.3 V rail?

Yes, the DC-to-DC conversion and resonant LLC topology deliver clean, stable voltage so legacy parts receive only what they need.

How can I confirm the zero-RPM fan mode is active after assembly?

At low and medium loads the cooling fan stops completely, so silent operation with no fan noise confirms the mode is working.

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