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

KHACHIMO

KHACHIMO X4270 N4288 VD650 E450 6Pin 400W Power Supply

SKU CH-GS9C-JCPSV

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

  • Product typeATX
  • Fast wake-from-sleep with Modern Standby support
  • Lower power draw and cooler temps via 80 PLUS Gold
  • Near-silent operation with Zero RPM fan mode
  • Clean, stable power from resonant LLC and DC-to-DC topology
  • Reduced coil whine for quieter system performance

KHACHIMO 400W ATX Power Supply

The KHACHIMO X4270 N4288 VD650 E450 is a 400W ATX power supply designed for desktop systems that require reliable and efficient power delivery. It carries 80 PLUS Gold certification, indicating high efficiency across typical loads, which helps reduce electricity consumption and heat output. Modern Standby compatibility enables extremely fast wake-from-sleep times and improved low-load efficiency. A Zero RPM fan mode stops the cooling fan entirely at low and medium loads for near-silent operation.

Ideal for efficient quiet builds not for high

This unit suits builders assembling office PCs, home media centres or compact workstations where low noise and high efficiency are priorities. The resonant LLC topology with DC-to-DC conversion provides clean, consistent power while reducing coil whine. Systems with power-hungry discrete graphics cards, multiple drives or heavy overclocking should look at higher-capacity units because the 400W limit and single 6-pin connector restrict available power for demanding components.

Fits standard ATX cases

The ATX form factor fits standard chassis layouts and the 6-pin PCIe connector supports mid-range graphics cards. Modern Standby support requires a compatible motherboard to enable fast sleep and wake functionality. The Gold-rated efficiency and Zero RPM mode free up thermal headroom inside the case, allowing quieter system cooling overall. Ensure the motherboard provides the necessary ATX power connectors and that total system draw stays within the 400W rating.

How it compares

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

Price $98.99
Cheaper than about 68% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeATX

Questions about this item

What motherboard form factor does the ATX-type PSU fit?

The power supply follows the ATX form factor, so it mounts in any standard ATX-compatible case and connects to a 24-pin motherboard socket.

Will the 400 W unit with Modern Standby support wake an older motherboard quickly from sleep?

Modern Standby compatibility provides extremely fast wake-from-sleep times, but the motherboard must also support the same low-power sleep state to benefit.

How can I confirm the Zero RPM fan mode is active after installation?

At low and medium loads the cooling fan switches off entirely, so silence during light desktop work indicates the mode is working.

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