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Silver rectangular ATX power supply unit with cooling fan visible

KHACHIMO

KHACHIMO PA-2301-3 D17-300P2A 300W ATX power supply

SKU CH-637F-QQ29E

300W ATX power supply with 80 PLUS Gold efficiency, Modern Standby support, and Zero RPM fan mode for silent low-load operation

  • TypeATX
  • Modern Standby compatible for extremely fast wake-from-sleep times
  • 80 PLUS Gold certified efficiency lowers power consumption and heat
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion delivers clean, consistent power and reduces coil whine
  • 300 W ATX power supply in new condition

300W ATX power supply for compact builds

The KHACHIMO PA-2301-3 D17-300P2A delivers 300 watts of continuous power in a standard ATX form factor. It targets system integrators and DIY builders who need reliable, efficient energy delivery for small-form-factor or office-oriented PCs. The unit supports Modern Standby for rapid wake-from-sleep behaviour.

80 PLUS Gold efficiency with Zero RPM fan mode

Gold certification means the supply runs at high efficiency across typical loads, reducing waste heat and lowering overall power draw. The Zero RPM mode stops the fan completely at low and medium loads, eliminating acoustic noise during light desktop work or media playback. Resonant LLC topology with DC-to-DC conversion further suppresses coil whine and improves voltage regulation.

Clean power headroom for mainstream components

The 300W rating comfortably handles modern mid-range CPUs, integrated graphics and a single discrete GPU with modest power requirements. It leaves enough reserve for several storage drives and USB peripherals. Builds demanding multiple high-end graphics cards, extreme overclocking or sustained loads well above 300 watts will exceed this unit's capacity.

Points forts

  • Modern Standby compatible for extremely fast wake-from-sleep times
  • 80 PLUS Gold certified efficiency lowers power consumption and heat
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion delivers clean, consistent power and reduces coil whine
  • 300 W ATX power supply in new condition

Caractéristiques

TypeATX

Questions sur cet article

How often will the 300W PSU fan need cleaning or replacement?

The Zero RPM Fan Mode stops the fan at low and medium loads, reducing dust buildup and wear, so cleaning intervals are longer than on always-spinning units.

What limit appears first when the 300W unit runs at full load for hours?

The 80 PLUS Gold rating guarantees high efficiency up to the rated 300W, so the thermal limit of the cooling system is reached before any efficiency drop.

How much noise and heat does the PA-2301-3 produce during all-day operation?

Zero RPM mode keeps it near-silent at typical loads, while 80 PLUS Gold efficiency and Resonant LLC topology minimise waste heat and coil whine.

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