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Compact 1U silver power supply unit with rear fan grille and modular cable sockets

KHACHIMO

KHACHIMO 750W power supply

SKU CH-3AS9-HGB8E

An 80 PLUS Gold 750 W ATX unit with Modern Standby support, zero-RPM fan mode and resonant LLC DC-to-DC topology for clean, quiet power

  • 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
  • 750 W output for compact ATX builds

Compact 750W ATX power supply

This KHACHIMO unit delivers 750W of continuous power in a 1U Flex ATX footprint designed for ITX, NAS and AIO chassis where space is tight. It targets system integrators and enthusiasts building high-density workstations or storage servers that still demand full ATX connector compatibility and Modern Standby support for instant wake.

80 PLUS Gold efficiency with Zero RPM fan mode

At typical desktop loads the supply runs above 80 PLUS Gold efficiency, keeping waste heat and electricity draw low. Below medium load the cooling fan stops completely, eliminating audible noise while Modern Standby compatibility maintains rapid sleep and wake transitions without coil whine thanks to the resonant LLC and DC-to-DC topology.

Resonant LLC topology sustains clean power under

During prolonged heavy workloads the LLC resonant converter with DC-to-DC secondary regulation maintains tight voltage regulation and low ripple across all rails. The fan spins up only when thermal sensors demand it, so acoustic output rises gradually rather than spiking, and the platform continues to support deep sleep states even after extended full-power operation.

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
  • 750 W output for compact ATX builds

Specifications

TypeATX

Questions about this item

How do I install the KHACHIMO 750W PSU in a Flex ATX chassis, and what step is often missed?

Mount the 1U Flex ATX unit using the four chassis screws, connect the 24-pin ATX, 8-pin CPU and peripheral cables, then enable Modern Standby in the motherboard BIOS — skipping the BIOS toggle leaves fast wake-from-sleep inactive.

What maintenance or replacement will the KHACHIMO 750W PSU need later?

The Zero RPM fan only spins above medium load, so dust builds up slowly; clean the intake mesh annually with compressed air and replace the fan only if bearing noise appears after several years.

What limit appears first on the KHACHIMO 750W PSU under sustained heavy load?

The 80 PLUS Gold efficiency curve peaks near 50 % load; at continuous 750 W output internal temperatures rise, triggering the fan to maximum speed and increasing audible noise before any protection circuit intervenes.

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