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Rectangular black ATX power supply unit with cooling fan and cable connectors

KHACHIMO

KHACHIMO Tecal RH2285 800W ATX power supply

SKU CH-GK53-3JD3M

An 800 W ATX power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support for fast wake times and quiet low-load operation

  • TypeATX
  • Modern Standby support enables extremely fast wake-from-sleep
  • 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 and reduces coil whine
  • ATX form factor fits standard desktop builds

800W ATX power supply

The KHACHIMO Tecal RH2285 delivers 800W of continuous ATX power for desktop builds that need reliable headroom for modern CPUs and graphics cards. It targets system integrators and enthusiasts who want efficient, quiet operation without over-specifying the unit.

80 PLUS Gold with Zero RPM fan

The unit carries 80 PLUS Gold certification, reducing waste heat and fan demand under typical loads. A Zero RPM mode stops the fan completely at low and medium loads, while resonant LLC topology with DC-to-DC conversion minimises coil whine and supports deeper sleep states.

Modern Standby upgrade for older ATX units

Replaces older Gold or Bronze units that lack Modern Standby support, enabling faster wake times and better low-load efficiency. The jump is worthwhile when building or refreshing a system that uses Windows Modern Standby and values near-silent idle behaviour.

Highlights

  • Modern Standby support enables extremely fast wake-from-sleep
  • 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 and reduces coil whine
  • ATX form factor fits standard desktop builds

Specifications

TypeATX

Questions about this item

What ATX standard does the 800W unit follow, and what does that limit in practice?

It follows the ATX form factor, which defines the physical size and connector layout that fits standard ATX cases and motherboards.

What clearance and mounting holes does the Tecal RH2285 require inside the case?

The PSU uses the standard ATX mounting pattern with four rear screws and needs the typical ATX depth clearance in the case compartment.

How is the power supply installed, and which cable step do builders often miss?

Mount the unit with four screws, connect the 24-pin ATX and CPU power cables, then attach GPU and drive cables; the step often missed is plugging in the CPU 4+4-pin connector near the socket.

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