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KHACHIMO ACE-850AP-RS-24 850W ATX power supply, matte black metal box with fan grille and cable bundle

KHACHIMO

KHACHIMO ACE-850AP-RS-24 850W ATX power supply

SKU CH-XA4F-ET0KW

An 850W ATX power supply with 80 PLUS Gold efficiency, Zero RPM fan mode, and LLC resonant topology for clean, quiet power delivery

  • TypeATX
  • Fast wake-from-sleep with Modern Standby support
  • 80 PLUS Gold efficiency lowers power draw and heat
  • Fan stops at low loads for silent running
  • Resonant LLC with DC-to-DC gives clean stable power
  • 850 W ATX unit built for industrial control

Industrial 850W ATX unit

The KHACHIMO ACE-850AP-RS-24 is an 850W ATX power supply built for industrial control systems and high-reliability workstations. It delivers continuous 24V output with Modern Standby compatibility for fast wake-from-sleep transitions. The unit suits builders who need server-grade efficiency in a standard ATX footprint. It is not for compact SFX builds or systems requiring multiple 12VHPWR connectors.

Gold efficiency with zero-fan mode

80 PLUS Gold certification ensures high efficiency operation for lower power consumption, less noise, and cooler temperatures across typical loads. The Zero RPM Fan Mode stops the cooling fan entirely at low and medium loads for near-silent operation. Resonant LLC topology with DC-to-DC conversion provides clean, consistent power while reducing coil whine and enabling deeper sleep states. This combination keeps acoustics minimal during idle and light workloads.

Standard ATX fit with Modern Standby

The ATX form factor fits standard chassis layouts without proprietary brackets or cable routing constraints. Modern Standby support frees the system to enter and exit low-power states quickly, reducing downtime in always-on environments. DC-to-DC conversion simplifies the internal cable harness by generating minor rails from the primary 24V output. Builders needing redundant hot-swap modules or non-ATX mounting patterns should look elsewhere.

Highlights

  • Fast wake-from-sleep with Modern Standby support
  • 80 PLUS Gold efficiency lowers power draw and heat
  • Fan stops at low loads for silent running
  • Resonant LLC with DC-to-DC gives clean stable power
  • 850 W ATX unit built for industrial control

Specifications

TypeATX

Questions about this item

How do I install the ACE-850AP-RS-24 in an ATX case and what step is often missed?

Mount the unit with the supplied screws, connect the 24-pin ATX and CPU power cables, then enable Modern Standby in the BIOS so the fast wake and low-load efficiency features actually work.

What maintenance will this 850W supply need over time?

The Zero RPM fan mode keeps the fan off at low loads, reducing dust intake; clean the intake grill with compressed air once a year and listen for bearing noise if the fan starts running under heavier loads.

What limit appears first when the unit runs at high load for long periods?

The 80 PLUS Gold rating means efficiency peaks around 50% load; pushing sustained output toward 850W increases waste heat, so internal temperature becomes the limiting factor before the protection circuits trip.

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