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Rectangular ATX power supply unit with matte black finish and cooling fan grille

KHACHIMO

KHACHIMO S5300V3 800W ATX Power Supply 02311DEP

SKU CH-8FRZ-7N5AC

An 800W ATX power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support for silent, low-power sleep states

  • TypeATX
  • Faster wake from sleep with Modern Standby support
  • Lower power draw and cooler running via 80 PLUS Gold efficiency
  • Near-silent operation at low loads with Zero RPM fan mode
  • Clean, stable power delivery through resonant LLC and DC-to-DC design
  • Reduced coil whine for quieter performance under load

ATX 800W Gold PSU

The KHACHIMO S5300V3 is an ATX power supply rated at 800W and certified 80 PLUS Gold. It targets system builders who need efficient, low-noise power for modern desktop platforms. Modern Standby support enables rapid wake-from-sleep transitions and improved low-load efficiency. The unit is brand new and ready for integration.

Replaces older Bronze or unrated units

Swapping a lower-efficiency supply for this Gold-certified model cuts waste heat and reduces coil whine through its resonant LLC topology with DC-to-DC conversion. The upgrade is worthwhile when your current PSU cannot meet Modern Standby sleep-state requirements or when fan noise at idle is intrusive. Zero RPM mode eliminates fan spin at low and medium loads for near-silent operation.

Sustained load behaviour

Under continuous demand the resonant LLC design maintains clean, consistent power delivery while the 80 PLUS Gold rating keeps thermals in check. The fan remains off until load exceeds the Zero RPM threshold, then ramps only as needed to manage temperature. DC-to-DC conversion supports efficient minor-rail regulation during prolonged workloads.

Points forts

  • Faster wake from sleep with Modern Standby support
  • Lower power draw and cooler running via 80 PLUS Gold efficiency
  • Near-silent operation at low loads with Zero RPM fan mode
  • Clean, stable power delivery through resonant LLC and DC-to-DC design
  • Reduced coil whine for quieter performance under load

Caractéristiques

TypeATX

Questions sur cet article

What ATX case clearance does the 800 W unit require?

The PSU follows the standard ATX form factor, so any case with an ATX power-supply bay will accept it without special clearance.

Which cables must be connected during installation to avoid a no-post?

Seat the 24-pin ATX motherboard connector and the 8-pin (or 4+4) CPU power connector firmly; missing either will prevent the system from starting.

When should the 120 mm fan bearing be checked or replaced?

The Zero RPM mode keeps the fan off at low load, so bearing wear is minimal; inspect for noise or vibration after several years of heavy use.

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