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Rectangular silver ATX power supply unit with rear fan grille and side label

KHACHIMO

KHACHIMO SD-3450U2 300W 400W ATX power supply

SKU CH-JD5S-7ZC4Z

ATX unit rated 300W continuous with 400W peak, 80 PLUS Gold efficiency, Modern Standby support, zero-RPM fan mode and LLC resonant topology with DC-to-DC conversion

  • TypeATX
  • Modern Standby support gives extremely fast wake-from-sleep times
  • 80 PLUS Gold certification delivers high efficiency for lower consumption 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 300W continuous with 400W peak capacity for reliable ATX power delivery

300W ATX power supply with 80 PLUS Gold

The KHACHIMO SD-3450U2 is a 300 watt ATX power supply rated for 400 watt peak output. It suits compact desktop builds or workstation replacements where a modern standby compatible unit is required. 80 PLUS Gold certification ensures high efficiency across typical loads.

Resonant LLC topology with DC-to-DC conversion

This topology delivers clean, consistent power while reducing coil whine for quieter operation. Zero RPM fan mode stops the cooling fan entirely at low and medium loads, enabling near-silent running. Modern standby support provides extremely fast wake-from-sleep times and better low-load efficiency.

Check ATX form factor and peak power headroom

Verify that your chassis accepts a standard ATX power supply and that the 300 watt continuous rating meets your components' combined draw. The 400 watt peak figure covers short bursts only, so sustained heavy loads need careful planning. Ensure your motherboard supports modern standby to use the fast wake feature.

Points forts

  • Modern Standby support gives extremely fast wake-from-sleep times
  • 80 PLUS Gold certification delivers high efficiency for lower consumption 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 300W continuous with 400W peak capacity for reliable ATX power delivery

Caractéristiques

TypeATX

Questions sur cet article

What does the 80 PLUS Gold rating mean for the SD-3450U2?

The 80 PLUS Gold certification confirms high efficiency operation, resulting in lower power consumption, less noise and cooler temperatures.

What physical space does this 2U power supply require?

It fits a standard 2U rackmount chassis using the ATX form factor.

How do I enable the Zero RPM fan mode?

The fan stops automatically at low and medium loads; no manual setup is required.

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