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Black rectangular ATX power supply unit with gold efficiency badge visible

KHACHIMO

KHACHIMO PSR05-D 280W ATX power supply

SKU CH-EZFQ-CW17N

Delivers 280 W ATX power with 80 PLUS Gold efficiency, Modern Standby support, a Zero RPM fan mode and resonant LLC topology with DC-to-DC conversion for clean, quiet operation

  • Product typeATX
  • Modern Standby compatibility enables extremely fast wake-from-sleep times
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption and cooler operation
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent performance
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • 280W ATX power supply supports modern energy-efficient sleep states

280W ATX power supply for compact builds

This 280W ATX unit fits standard chassis dimensions and targets small-form-factor PCs, office workstations and media-centre systems. It delivers enough headroom for integrated graphics or entry-level discrete cards while keeping the power budget modest.

80 PLUS Gold efficiency with zero-RPM fan

Gold-rated efficiency cuts waste heat and electricity draw, and the resonant LLC topology with DC-to-DC conversion keeps output stable while reducing coil whine. At low and medium loads the fan stops completely, giving near-silent operation during everyday tasks.

Modern Standby support replaces older sleep states

The supply enables Modern Standby for near-instant wake times and deeper low-power sleep, a clear step up from legacy S3 suspend. Builders moving from basic Bronze units or non-Modern-Standby designs will notice quieter idle behaviour and faster resume, but systems needing more than 280W or multiple high-power GPU connectors should look elsewhere.

How it compares

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

Price $310.99
Pricier than about 79% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeATX

Questions about this item

Does the ATX form factor fit standard ATX cases and motherboards?

Yes, it follows the ATX form factor so it mounts in standard ATX cases and connects to ATX motherboards.

What mounting points does the PSR05-D use?

It uses the standard ATX screw pattern with four mounting holes on the rear of the chassis.

Is any special cable or adapter needed to enable Modern Standby?

No extra cable is required; connect the 24-pin ATX and CPU power cables and Modern Standby works through the motherboard.

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