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Rectangular ATX power supply unit in matte black finish with cooling fan visible on one side

KHACHIMO

KHACHIMO 280W ATX power supply PS-5281-02 PC6001

SKU CH-BM6P-MC5M2

280W ATX unit with 80 PLUS Gold efficiency, Modern Standby support, Zero RPM fan mode and resonant LLC topology with DC-to-DC conversion

  • Product typeATX
  • Modern Standby compatible for extremely fast wake-from-sleep
  • 80 PLUS Gold certified for high efficiency and lower power consumption
  • Zero RPM fan mode stops the fan at low and medium loads
  • Resonant LLC topology with DC-to-DC conversion delivers clean, consistent power
  • ATX form factor fits standard desktop builds

280W ATX power supply for compact builds

The KHACHIMO PS-5281-02 PC6001 delivers 280 watts of continuous power in a standard ATX form factor. It is designed for small-form-factor desktops, office workstations and media PCs that demand reliable delivery without the bulk of higher-wattage units. The 80 PLUS Gold certification ensures efficient conversion across typical loads.

Replaces older low-efficiency units

This supply upgrades systems still running group-regulated or bronze-rated designs that waste energy at idle and produce audible fan noise. The jump is worthwhile when a build requires Modern Standby support for instant wake, quieter operation under light loads, or tighter voltage regulation for sensitive components. It is not suited for configurations with discrete graphics cards or multiple drives that exceed the 280W budget.

Limits of the ATX 280W envelope

The 280W ceiling restricts use to platforms with integrated graphics, low-power CPUs and modest storage counts. Zero RPM mode operates only while total draw stays within the low-to-medium range defined by the unit's fan curve. Resonant LLC topology with DC-to-DC conversion improves transient response, yet the fixed maximum output remains the hard boundary for any future component additions.

How it compares

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

Price $65.99
Cheaper than about 81% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeATX

Questions about this item

What ATX case clearance is needed for the PS-5281-02 unit?

The power supply follows the standard ATX form factor, so it fits any chassis designed for ATX units with the usual mounting holes and rear cutout.

Which cables must be connected during installation to enable Modern Standby wake-up?

Attach the 24-pin motherboard connector and the CPU power lead; the firmware then handles the low-power signalling required for fast wake-from-sleep.

When should the internal fan be inspected if the Zero RPM mode stops engaging?

Dust buildup on the fan blades or heatsink can prevent the fan from spinning down, so check and clean the interior once a year or when noise appears.

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