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

KHACHIMO

KHACHIMO DF4000R 540W power supply DPSN-540BB A

SKU CH-076M-NT7PM

ATX power supply delivering 540 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 enables extremely fast wake-from-sleep times
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption
  • Zero RPM fan mode stops the fan at low loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power
  • ATX form factor fits standard desktop builds

ATX Power Supply for Modern Standby Systems

The KHACHIMO DF4000R is a new 540W ATX power supply designed for PCs that use Modern Standby sleep states. It suits builders who want high efficiency and low noise in a standard desktop form factor. This unit is not intended for systems requiring more than 540W of continuous power.

540W Capacity with Gold Efficiency Headroom

The 80 PLUS Gold certification ensures high efficiency across typical loads, reducing waste heat and lowering energy draw. At 540W the unit handles mainstream CPUs and mid-range graphics cards comfortably, but it will run out of headroom for high-end multi-GPU configurations or extreme overclocking scenarios.

Modern Standby and Zero RPM Limits

Modern Standby compatibility enables extremely fast wake times and efficient low-power states supported by the platform. The Zero RPM fan mode stops the fan at low and medium loads for silent operation, though the fan will activate under sustained heavy load. Resonant LLC topology with DC-to-DC conversion delivers clean power and reduces coil whine within the design envelope.

Points forts

  • Modern Standby support enables extremely fast wake-from-sleep times
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption
  • Zero RPM fan mode stops the fan at low loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power
  • ATX form factor fits standard desktop builds

Caractéristiques

TypeATX

Questions sur cet article

Will the 540W unit work with an older motherboard that still uses a 24-pin ATX connector?

Yes, the power supply follows the ATX form factor so it fits standard 24-pin motherboards and provides the 540W rated output through that interface.

How can I confirm the Zero RPM Fan Mode is active after installing the DF4000R?

Under light or medium load the cooling fan stops spinning completely; you can verify silent operation by listening for fan noise during typical desktop use.

What cables are included with the new 540W power supply?

The unit ships with the fixed ATX power cables required for motherboard, CPU and peripheral connections; no separate cable kit is needed for a standard build.

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