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Rectangular ATX power supply unit in matte black finish with a large cooling fan grille on one side

KHACHIMO

KHACHIMO CP1800AC52 1800W ATX power supply

SKU CH-J6DC-46MBG

An 1800W ATX power supply with 80 PLUS Gold efficiency, Modern Standby support, Zero RPM fan mode and resonant LLC topology with DC-to-DC conversion for clean, quiet power delivery

  • Product typeATX
  • Modern Standby support for fast wake and low-load efficiency
  • 80 PLUS Gold certified at 80 percent load for lower power draw and heat
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion delivers clean power and reduces coil whine
  • 1800W ATX output capacity for high-performance system builds

1800W ATX Power Supply

The KHACHIMO CP1800AC52 is an ATX power supply rated at 1800W for high-demand desktop builds. It targets enthusiasts and workstation users who need substantial, stable output for multi-GPU configurations or heavily overclocked components.

Sustained Load Behaviour

Resonant LLC topology with DC-to-DC conversion delivers clean, consistent power during extended heavy workloads. This design reduces coil whine and supports energy-efficient sleep states, while 80 PLUS Gold certification ensures high efficiency that lowers waste heat and keeps internal temperatures down.

ATX Standard Limits

Modern Standby compatibility enables extremely fast wake-from-sleep times and improved low-load efficiency within the ATX specification. Zero RPM fan mode stops the cooling fan entirely at low and medium loads for near-silent operation, though the fan will engage once thermal thresholds are exceeded.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $811.99
Pricier than about 90% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeATX

Questions about this item

How loud and hot does the 1800W unit get when running continuously?

The 80 PLUS Gold efficiency keeps waste heat low, and the Zero RPM fan mode stops the fan entirely at low and medium loads for near-silent operation.

What cables or connectors must I already have to install this ATX supply?

It uses standard ATX power connectors, so the 24-pin motherboard, CPU and PCIe cables that come with the unit are all that is required.

Will the resonant LLC topology with DC-to-DC conversion work reliably with older components I keep?

Yes, the topology delivers clean, consistent power and reduces coil whine, making it compatible with legacy hardware while supporting modern sleep states.

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