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KHACHIMO S8500 DC 1200W ATX power supply, black metal casing with fan grille

KHACHIMO

KHACHIMO S8500 DC 1200W Power Supply

SKU CH-SJAR-23FE9

ATX power supply delivering 1200 W with 80 PLUS Gold efficiency, Modern Standby support, Zero RPM fan mode and resonant LLC topology with DC-to-DC conversion

  • TypeATX
  • 80 PLUS Gold certification cuts electricity use and heat
  • Zero RPM fan mode stops the fan at low loads for silent running
  • Modern Standby support gives faster wake-from-sleep and better idle efficiency
  • Resonant LLC with DC-to-DC conversion delivers clean power and reduces coil whine
  • 1200 W ATX output handles high-end components with headroom

1200W ATX Power Supply

The KHACHIMO S8500 delivers 1200 watts of continuous power in a standard ATX form factor. It carries 80 PLUS Gold certification for high efficiency across typical loads. Modern Standby compatibility enables extremely fast wake-from-sleep times and improved low-load efficiency. This unit targets high-end desktop builds that demand clean, stable power delivery.

Replaces older group-regulated units

Moving from a group-regulated design to this resonant LLC topology with DC-to-DC conversion eliminates cross-load issues and reduces coil whine. The upgrade is worth it when your current supply cannot maintain tight voltage regulation on modern multi-rail components. Zero RPM fan mode also removes idle noise that older units often produce. You gain support for deeper sleep states without changing other hardware.

Suits quiet-focused high-power builds

Builders who prioritise near-silent operation at low and medium loads will benefit from the fan-stop feature and LLC resonance damping. Systems that rely on Modern Standby for instant resume see tangible gains in wake speed and idle draw. Buyers who need modular cabling or a specific connector count not listed here should verify compatibility before purchasing. Those assembling compact chassis with non-standard depth allowances must confirm fit independently.

Highlights

  • 80 PLUS Gold certification cuts electricity use and heat
  • Zero RPM fan mode stops the fan at low loads for silent running
  • Modern Standby support gives faster wake-from-sleep and better idle efficiency
  • Resonant LLC with DC-to-DC conversion delivers clean power and reduces coil whine
  • 1200 W ATX output handles high-end components with headroom

Specifications

TypeATX

Questions about this item

What physical space and mounting pattern does the ATX power supply require?

The unit follows the standard ATX form factor, so it fits any case with an ATX PSU cut-out and four rear mounting holes.

How do I install the PSU and what step is often missed?

Secure the supply with four screws, connect the 24-pin ATX, CPU and GPU cables, then enable Modern Standby in the motherboard BIOS or the fast wake feature will not work.

What maintenance will the 1200W unit need over time?

Clean dust from the intake grill periodically; the Zero RPM fan mode means the fan only spins under load, reducing bearing wear and extending service intervals.

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