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

KHACHIMO

KHACHIMO 180V-357V 250W Power Supply OT 250/120-277/700 P5

SKU CH-AGSZ-KR7YR

ATX power supply delivering 250 W with 80 PLUS Gold efficiency, Modern Standby support, zero-RPM fan mode and resonant LLC DC-to-DC topology

  • TypeATX
  • Fast wake-from-sleep with Modern Standby support
  • Lower power draw and cooler running via 80 PLUS Gold efficiency
  • Near-silent at low load with Zero RPM fan mode
  • Clean, stable power delivery through resonant LLC and DC-to-DC topology
  • Reduced coil whine and quieter operation enabled by advanced topology

250 W ATX power supply

This 250 W ATX unit delivers 80 PLUS Gold efficiency across a 120 V to 277 V input range. It targets builders who need dependable power for modest desktop systems or Modern Standby PCs. Resonant LLC topology with DC-to-DC conversion keeps output clean and reduces coil whine. The compact design fits standard ATX bays and supports fast wake-from-sleep transitions.

Suited to efficient low-power builds

Ideal for compact workstations, home-office PCs or secondary rigs where quiet operation and low idle draw matter. The zero RPM fan mode stays silent at light and medium loads while Modern Standby compatibility enables instant resume. Builders chasing high-wattage headroom for multi-GPU arrays or extreme overclocking should look elsewhere. The 250 W ceiling also rules out power-hungry workstation cards.

Steady output under continuous load

Gold-rated efficiency limits waste heat so internal temperatures stay lower during long sessions. Resonant LLC and DC-to-DC stages maintain tight voltage regulation when the system runs sustained workloads. The fan remains off until thermal sensors demand airflow, then ramps gradually to avoid sudden noise spikes. This behaviour keeps acoustics consistent whether the PC idles overnight or crunches data for hours.

Highlights

  • Fast wake-from-sleep with Modern Standby support
  • Lower power draw and cooler running via 80 PLUS Gold efficiency
  • Near-silent at low load with Zero RPM fan mode
  • Clean, stable power delivery through resonant LLC and DC-to-DC topology
  • Reduced coil whine and quieter operation enabled by advanced topology

Specifications

TypeATX

Questions about this item

What motherboard power connector does the 250 W ATX unit require?

It uses a standard 24-pin ATX connector plus the matching 12 V CPU and PCIe cables for graphics cards.

Will the 180 V-357 V input range work with my existing 120 V-277 V UPS?

Yes, the supply accepts 120 V to 277 V so it operates normally on that UPS output.

How do I confirm the fan is behaving correctly after installation?

At low load the fan stays off in Zero RPM mode; it spins up only when temperature or load rises.

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