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

KHACHIMO

KHACHIMO HXPAD350-220S28-01R1 350W ATX power supply

SKU CH-EFVR-ZWPYP

A new 350 W ATX unit with 80 PLUS Gold efficiency, Modern Standby support, zero-RPM fan mode and LLC resonant topology for clean, quiet power delivery

  • TypeATX
  • Fast wake-from-sleep with Modern Standby support
  • Lower power draw and cooler temps via 80 PLUS Gold efficiency
  • Near-silent operation thanks to Zero RPM fan mode at low loads
  • Clean, stable power delivery using resonant LLC topology with DC-to-DC conversion
  • Reduced coil whine for quieter performance under load

350W ATX PSU for Modern Standby

This KHACHIMO unit is a 350W ATX power supply built for systems that use Modern Standby sleep states. It delivers 80 PLUS Gold certified efficiency to reduce power draw and heat. The resonant LLC topology with DC-to-DC conversion provides stable voltage regulation. It suits compact or office PCs that prioritise low idle consumption and fast wake times.

Upgrade from lower efficiency units

Replacing a non-modular or Bronze-rated supply with this model cuts waste heat and enables deeper sleep states supported by modern motherboards. The jump is worth it when building or refreshing a PC that spends long periods idle and must wake instantly. Zero RPM fan mode removes acoustic noise at low and medium loads, a clear gain over always-spinning designs.

Suits efficiency-focused office builds

This unit fits builders who need Gold efficiency, Modern Standby compatibility and silent low-load operation in a standard ATX form factor. It is not for systems that demand higher wattage for discrete graphics cards or heavy multi-core workloads. Buyers who need more power headroom or modular cabling should look at larger capacity alternatives.

Highlights

  • Fast wake-from-sleep with Modern Standby support
  • Lower power draw and cooler temps via 80 PLUS Gold efficiency
  • Near-silent operation thanks to Zero RPM fan mode at low loads
  • Clean, stable power delivery using resonant LLC topology with DC-to-DC conversion
  • Reduced coil whine for quieter performance under load

Specifications

TypeATX

Questions about this item

What ATX form-factor dimensions does the 350 W unit require in my case?

It follows the standard ATX power-supply footprint, so any chassis with an ATX PSU bay will accept it without adapters.

Which cable must be seated firmly for the 220 V input to deliver stable 80 PLUS Gold efficiency?

The 24-pin ATX motherboard connector and the 4+4-pin CPU power lead must both be fully inserted; the CPU lead is the one most often left loose.

How does the Zero RPM fan mode affect long-term dust buildup inside the 350 W supply?

Because the fan stops at low and medium loads, less dust is drawn in, so cleaning intervals can be longer than on constantly spinning units.

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