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Rectangular black metal ATX power supply unit with cooling fan and cable bundle visible

KHACHIMO

KHACHIMO Z420 400W ATX Power Supply DPS-400AB-13B

SKU CH-47G0-X3GDK

A 400W ATX power supply with 80 PLUS Gold efficiency, Zero RPM fan mode, Modern Standby support, and resonant LLC topology for clean power delivery

  • Product typeATX
  • Fast wake-from-sleep with Modern Standby support
  • Lower power draw via 80 PLUS Gold efficiency
  • Near-silent operation with Zero RPM fan mode
  • Clean, stable power from LLC resonant topology
  • 400 W ATX output for compatible systems

400 W ATX power supply for modern standby systems

The KHACHIMO Z420 delivers 400 watts of continuous power in a standard ATX form factor. It targets builders who need reliable energy delivery for mainstream desktops that support Modern Standby sleep states. The 80 PLUS Gold certification confirms high efficiency across typical load ranges.

Zero RPM fan mode and resonant LLC topology

A semi-passive fan profile stops the fan completely at low and medium loads, removing audible noise during idle or light work. Resonant LLC topology with DC-to-DC conversion supplies clean voltage rails and reduces coil whine. These traits suit noise-sensitive workstations or living-room PCs.

Gold-rated headroom for mid-range components

The 400 W ceiling comfortably handles a modern CPU and a single mid-range graphics card with overhead for drives and peripherals. Systems demanding multiple high-end GPUs, extreme overclocking headroom or redundant server power will exceed this unit’s capacity.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $88.99
Cheaper than about 72% of the 10,869 comparable items (median $142.99).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Product typeATX

Questions about this item

What happens when the 400 W limit is reached under sustained load?

The power supply will trigger its over-power protection and shut down to prevent damage.

How loud is the fan during all-day operation?

Zero RPM Fan Mode stops the fan completely at low and medium loads, giving near-silent running.

Which motherboard power connector does this unit require?

It uses a standard 24-pin ATX connector plus a 4+4-pin CPU power cable.

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