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Rectangular ATX power supply unit with matte black finish and ventilation grille

KHACHIMO

KHACHIMO R33640G1 1500W ATX Power Supply

SKU CH-FKZH-N0QPV

An ATX 1500W unit with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support for silent, low-power sleep

  • TypeATX
  • Modern Standby support for near-instant wake from sleep
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Zero RPM fan mode keeps system silent at low load
  • Resonant LLC with DC-to-DC delivers clean, stable power
  • 1500W ATX capacity handles demanding multi-GPU builds

1500W ATX power supply for high-load systems

The KHACHIMO R33640G1 delivers 1500W of continuous power through an ATX form factor, suited to workstations and multi-GPU rigs that draw heavy current. Its 80 PLUS Gold certification means high efficiency at typical loads, reducing waste heat and keeping operating temperatures lower. Modern Standby compatibility allows extremely fast wake-from-sleep transitions and improved low-load efficiency for systems that use deep sleep states.

Resonant LLC topology with DC-to-DC conversion

The resonant LLC design combined with DC-to-DC conversion supplies clean, consistent voltage rails while cutting coil whine for quieter running. At low and medium loads the Zero RPM fan mode stops the cooling fan entirely, giving near-silent operation during idle or light workloads. These features together lower acoustic output and support more energy-efficient sleep states without extra configuration.

Verify ATX clearance and cable reach before ordering

Confirm the case can accommodate a standard ATX power supply and that the fixed cable lengths reach every component, especially in larger enclosures. Ensure the motherboard and graphics cards use connectors this unit provides, as no modular cable kit is mentioned. Builders needing higher wattage, redundant supplies or server-grade form factors should look elsewhere.

Highlights

  • Modern Standby support for near-instant wake from sleep
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Zero RPM fan mode keeps system silent at low load
  • Resonant LLC with DC-to-DC delivers clean, stable power
  • 1500W ATX capacity handles demanding multi-GPU builds

Specifications

TypeATX

Questions about this item

Will the 1500W fan need replacement after years of continuous use?

The Zero RPM mode keeps the fan off at low and medium loads, reducing wear. When it does spin, the 80 PLUS Gold efficiency lowers heat, extending bearing life.

What limit appears first when the 1500W unit runs at full load for hours?

The 80 PLUS Gold rating guarantees high efficiency up to full load, so thermal protection is the first limit; the fan ramps up to keep internal temperatures safe.

How loud and hot does the R33640G1 get during all-day operation?

At typical loads the fan stays off for near-silent running. Under heavy load the Gold-efficient design minimises waste heat, so noise and temperatures stay low.

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