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1U silver power supply unit with rear fan grille and cable bundle

KHACHIMO

KHACHIMO 1U 300W 450W Peak Power Supply FSP300-601U SPI3001UH

SKU CH-Z4M2-4SJ95

A 1U ATX unit rated 300 W with a 450 W peak, 80 PLUS Gold efficiency, Modern Standby support and a zero-RPM fan mode for silent low-load operation

  • TypeATX
  • Modern Standby support enables rapid wake-from-sleep transitions
  • 80 PLUS Gold certification delivers high efficiency for lower power draw and cooler running
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean power and reduces coil whine
  • Rated 300 W continuous with 450 W peak capacity for reliable 1U server deployment

1U Server Power Supply

This 1U form-factor unit delivers 300 W continuous and 450 W peak output for rack-mount servers and compact workstations. It uses ATX-type connectors and is built for systems that require reliable power in a single rack-unit height. The FSP300-601U platform targets integrators who need dense, efficient power without full-height clearance.

Efficiency and Quiet Operation

The 80 PLUS Gold rating ensures high efficiency across typical loads, reducing waste heat and fan noise. Zero RPM mode stops the fan completely at low and medium loads for near-silent running, while LLC resonant topology with DC-to-DC conversion minimises coil whine. Modern Standby support enables rapid wake-from-sleep for always-ready deployments. Builders needing redundant or hot-swap modules should look elsewhere.

Sustained Load Behaviour

Under continuous demand the supply maintains its 300 W rating with stable voltages thanks to the resonant LLC design. DC-to-DC conversion keeps minor rails tight during prolonged heavy draw, and the fan ramps only when thermal thresholds require it. Peak capacity of 450 W handles short transients without tripping protection circuits.

Points forts

  • Modern Standby support enables rapid wake-from-sleep transitions
  • 80 PLUS Gold certification delivers high efficiency for lower power draw and cooler running
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean power and reduces coil whine
  • Rated 300 W continuous with 450 W peak capacity for reliable 1U server deployment

Caractéristiques

TypeATX

Questions sur cet article

What motherboard power connector does this 300W unit need?

It uses a standard ATX connector, so any motherboard with a 24-pin ATX socket will work.

Will the 80 PLUS Gold efficiency still help if I keep an older CPU that draws little power at idle?

Yes, the Gold rating and DC-to-DC design keep efficiency high even at very low loads typical of older processors.

How can I confirm the Zero RPM mode is active after I build the system?

At low load the fan stops completely; you should hear no fan noise until the load rises enough to spin it up.

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