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

KHACHIMO

KHACHIMO T640 power supply

SKU CH-R450-CQ6A4

An ATX power supply delivering 640 watts with 80 PLUS Gold efficiency, Modern Standby support, Zero RPM fan mode and resonant LLC topology with DC-to-DC conversion for quiet, stable power

  • TypeATX
  • Faster wake from sleep with Modern Standby support
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Fan stops at low load for silent running
  • Resonant LLC topology with DC-to-DC delivers clean, stable power
  • 640 W capacity for demanding ATX builds

ATX Power Supply for Modern PCs

The KHACHIMO T640 is an ATX power supply built for desktop systems that demand efficient, quiet power delivery. Its 80 PLUS Gold certification confirms high efficiency across typical loads, reducing waste heat and electricity draw. Modern Standby compatibility allows extremely fast wake-from-sleep times, suiting users who leave their machine in low-power states. This unit targets builders who value silent operation and modern sleep-state support.

Build Quality and Connector Implications

A resonant LLC topology with DC-to-DC conversion supplies clean, consistent power while reducing coil whine for quieter running. The Zero RPM fan mode stops the cooling fan entirely at low and medium loads, delivering near-silent operation during everyday tasks. Standard ATX mounting ensures compatibility with common chassis layouts, and the fixed cable set covers typical component connections. Buyers needing fully modular cabling or specialised high-current connectors will not find them here.

The Deciding Specification: 640 W Output

The single figure that determines fit is the 640 W rated output, which sets the total power budget for the CPU, GPU, drives and peripherals. Combined with 80 PLUS Gold efficiency, this capacity supports mid-range gaming or workstation builds with a single graphics card. Systems planning multi-GPU arrays, extreme overclocking or very high core-count processors will exceed this limit and require a higher-wattage unit.

Puntos fuertes

  • Faster wake from sleep with Modern Standby support
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Fan stops at low load for silent running
  • Resonant LLC topology with DC-to-DC delivers clean, stable power
  • 640 W capacity for demanding ATX builds

Especificaciones

TypeATX

Preguntas sobre este artículo

What does 80 PLUS Gold certification mean for the KHACHIMO T640's efficiency in daily use?

It certifies high-efficiency operation that reduces power consumption, noise and running temperatures compared with lower-rated units.

What physical space does the ATX form factor of the T640 require inside a case?

A standard ATX power-supply bay with the usual four mounting holes at the rear of the chassis.

How do I enable the Zero RPM fan mode on the T640?

The fan stops automatically at low and medium loads; no user setting is needed — just ensure the unit is not obstructed so it can stay in silent mode.

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