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Rectangular ATX power supply unit in black metal finish with cooling fan grille and cable bundle

KHACHIMO

KHACHIMO FSP400-62PFG 400W ATX power supply

SKU CH-KAEX-3NJ45

ATX power supply delivering 400 W with 80 PLUS Gold efficiency, Modern Standby support, zero-RPM fan mode and resonant LLC topology with DC-to-DC conversion

  • TypeATX
  • Modern Standby support gives extremely fast wake-from-sleep and better low-load efficiency
  • 80 PLUS Gold certification means high efficiency for lower power consumption, less noise and cooler temperatures
  • 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 power and reduces coil whine
  • DC-to-DC conversion enables more energy efficient sleep states

400W ATX Power Supply

The KHACHIMO FSP400-62PFG is a 400W ATX power supply built for modern desktop builds. It targets users who want high efficiency and quiet operation in a standard form factor. The unit carries 80 PLUS Gold certification for reduced power draw and lower heat output. It is suited for office PCs, home workstations and compact gaming rigs.

Build integration and Modern Standby support

The supply uses resonant LLC topology with DC-to-DC conversion to deliver stable voltages across all rails. This design enables Modern Standby compatibility, allowing extremely fast wake-from-sleep times and better low-load efficiency. Zero RPM fan mode stops the cooling fan entirely at low and medium loads for near-silent running. Standard ATX dimensions let it drop into most chassis without clearance issues.

Upgrade path and when to step up

The Gold-rated platform replaces older Bronze or unrated units, cutting waste heat and fan noise in daily use. DC-to-DC conversion reduces coil whine and supports deeper sleep states for newer motherboards. Builders planning multi-GPU setups or extreme overclocks will need higher wattage than the 400W rating provides. Systems with modest single-GPU configurations gain a tangible efficiency and acoustics improvement.

Points forts

  • Modern Standby support gives extremely fast wake-from-sleep and better low-load efficiency
  • 80 PLUS Gold certification means high efficiency for lower power consumption, less noise and cooler temperatures
  • 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 power and reduces coil whine
  • DC-to-DC conversion enables more energy efficient sleep states

Caractéristiques

TypeATX

Questions sur cet article

What limits this 400W unit first under sustained load?

The 80 PLUS Gold rating keeps efficiency high, so heat rises more slowly than on lower-rated supplies, letting the 400 watt output run longer before thermal limits activate.

How loud and hot does the FSP400-62PFG get when running all day?

Zero RPM Fan Mode stops the fan at low and medium loads for near-silent operation, while resonant LLC topology with DC-to-DC conversion reduces coil whine and keeps temperatures lower.

What must my build already have for this ATX supply to work?

A standard ATX motherboard with 24-pin main power and matching CPU and peripheral connectors, plus a chassis that accepts a regular ATX form-factor unit.

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