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Rectangular black metal ATX power supply unit with ventilation grille and power socket visible

KHACHIMO

KHACHIMO BTX-400P4 350W 80 PLUS Gold ATX power supply

SKU CH-H3WZ-WPTFN

An 80 PLUS Gold ATX power supply delivering 350 W with zero-RPM fan mode and LLC resonant topology for silent, efficient operation

  • TypeATX
  • Modern Standby support for fast wake-from-sleep and better low-load efficiency
  • 80 PLUS Gold certification delivers high efficiency for lower power use 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, consistent power and reduces coil whine
  • 350 W ATX power supply built for modern standby and efficient sleep states

BTX-400P4 350W ATX power supply

This unit delivers 350 watts of continuous power in a standard ATX form factor. It targets builders assembling compact or budget systems that require efficient, quiet operation. Modern Standby compatibility ensures rapid wake-from-sleep for everyday desktop use. It is not suited for configurations demanding higher sustained loads or multi-GPU arrangements.

80 PLUS Gold efficiency and 350W headroom

The 80 PLUS Gold rating reduces waste heat and keeps fan speeds low during typical workloads. Resonant LLC topology with DC-to-DC conversion supplies clean power to modern low-voltage rails. At low and medium loads the Zero RPM mode stops the fan completely for silent running. Continuous loads approaching the 350W limit will activate cooling and reduce acoustic advantage.

Zero RPM fan mode and Modern Standby support

The semi-passive fan profile eliminates noise during light office or media tasks. Modern Standby support allows the system to enter and exit low-power states quickly without compatibility issues. DC-to-DC conversion minimises coil whine under variable loads. No modular cables or software utilities are included with this model.

Points forts

  • Modern Standby support for fast wake-from-sleep and better low-load efficiency
  • 80 PLUS Gold certification delivers high efficiency for lower power use 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, consistent power and reduces coil whine
  • 350 W ATX power supply built for modern standby and efficient sleep states

Caractéristiques

TypeATX

Questions sur cet article

Will the BTX-400P4 work with an older ATX motherboard that still uses a 20-pin main connector?

The BTX-400P4 follows the ATX form factor and provides a 24-pin main connector; the extra four pins can be left disconnected on a 20-pin board.

How can I confirm the Zero RPM fan mode is active after installing the power supply?

Under light loads the fan stops completely; listen for silence and check that the 80 PLUS Gold efficiency rating is reported by monitoring software.

Does the BTX-400P4 include modular cables or must I buy them separately?

The unit ships with fixed cables attached; no modular cable set is included and none is required for installation.

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