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Silver rectangular ATX power supply unit with 20-pin connector and 420W rating

KHACHIMO

KHACHIMO YM-6042A ATX 420W 80 PLUS Gold 20Pin

SKU CH-7T3N-G3Q6F

ATX power supply delivering 420 W with 80 PLUS Gold efficiency, 20-pin connector, Modern Standby support, zero-RPM fan mode and resonant LLC topology with DC-to-DC conversion

  • Product typeATX
  • 80 PLUS Gold certified for high efficiency and lower power consumption
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion delivers clean, consistent power and reduces coil whine
  • Modern Standby compatible for extremely fast wake-from-sleep times and better low-load efficiency
  • ATX form factor with 20-pin connector and 420 W output for compatible systems

ATX 420W Gold 20-pin supply

This ATX power supply delivers 420W of continuous output through a 20-pin main connector. It is built for systems that require the classic 20-pin interface while still providing modern efficiency standards. The unit suits legacy board replacements and compact builds that do not need the full 24-pin layout.

80 PLUS Gold with Zero RPM mode

The 80 PLUS Gold certification ensures high efficiency across typical loads, reducing waste heat and overall power draw. A Zero RPM fan mode stops the cooling fan completely at low and medium loads, keeping the system near-silent during idle or light work. Resonant LLC topology with DC-to-DC conversion further cuts coil whine and supports deeper sleep states.

Modern Standby and clean DC-to-DC

Modern Standby compatibility allows extremely fast wake-from-sleep transitions and better low-load efficiency for always-connected workflows. The DC-to-DC design delivers stable minor rails without the cross-load issues of older group-regulated units. Builders gain a compact ATX footprint that frees cable routing space while the 20-pin connector matches boards that lack the extra 4 pins.

How it compares

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

Price $482.99
Pricier than about 90% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeATX

Questions about this item

How do I install the 20-pin ATX connector and what step do builders often miss?

Align the keyed 20-pin plug with the motherboard socket and press until the latch clicks; the step often missed is routing the cable clear of the CPU cooler so the latch stays seated.

What maintenance will the Zero RPM fan need later?

The fan stops at low and medium loads, so dust builds more slowly; clean the intake grill with compressed air once a year to keep the Zero RPM mode effective.

At what load does the 420 W unit hit its thermal limit first?

Sustained loads near the 420 W rating raise internal temperatures until the fan must spin up, ending the Zero RPM mode before any output limit is reached.

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