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Rectangular ATX power supply unit with matte black finish and integrated cooling fan

KHACHIMO

KHACHIMO HK450-11PEP 350W ATX Power Supply

SKU CH-X75V-3H356

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

  • TypeATX
  • Modern Standby support for near-instant wake from sleep
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Zero RPM fan mode stops the fan at low load
  • Resonant LLC with DC-to-DC conversion delivers clean, stable power
  • 350 W ATX output meets standard desktop requirements

350W ATX Power Supply for Modern Standby Systems

The KHACHIMO HK450-11PEP is a 350W ATX power supply built for PCs that use Modern Standby sleep states. Its 80 PLUS Gold certification ensures high efficiency across typical loads. It suits builders who need reliable power for mainstream components without chasing extreme wattage headroom.

Thermals, Noise and Power Draw

80 PLUS Gold rated operation keeps power consumption, heat output and fan noise lower than less efficient units. A Zero RPM fan mode stops the cooling fan entirely at low and medium loads for near-silent running. Resonant LLC topology with DC-to-DC conversion delivers clean, consistent power while further reducing coil whine.

Modern Standby and Topology Benefits

Modern Standby compatibility enables extremely fast wake-from-sleep times and improved low-load efficiency. The resonant LLC design with DC-to-DC conversion supports deeper, more energy-efficient sleep states. These features help the system stay responsive and frugal when idle, rather than just when under load.

Highlights

  • Modern Standby support for near-instant wake from sleep
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Zero RPM fan mode stops the fan at low load
  • Resonant LLC with DC-to-DC conversion delivers clean, stable power
  • 350 W ATX output meets standard desktop requirements

Specifications

TypeATX

Questions about this item

How do I install the KHACHIMO HK450-11PEP ATX power supply and what step is often missed?

Mount the unit in the case with four screws, connect the 24-pin ATX and CPU power cables firmly, then enable Modern Standby in the motherboard BIOS so the fast wake-from-sleep feature actually works.

What maintenance or replacement will this 350W Gold unit need later?

The Zero RPM fan mode reduces wear at low loads, but dust should be cleared from the intake vents yearly; the fan bearing is the only moving part that may eventually require replacement.

What limit appears first during sustained high loads on this 350W supply?

The 350W continuous output rating is the hard ceiling; exceeding it triggers over-power protection and shuts the unit down.

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