KHACHIMO HK500-52AP400W 400W ATX power supply

400W ATX Power Supply for Modern Standby

The KHACHIMO HK500-52AP400W delivers 400 watts of continuous power in a standard ATX form factor. It targets system builders who need reliable energy delivery for mainstream desktop configurations. Modern Standby compatibility enables extremely fast wake-from-sleep transitions and improved low-load efficiency. This unit suits new builds or upgrades where quiet, efficient operation is a priority.

Sustained Load Behaviour and Cooling

Under continuous demand the Resonant LLC topology with DC-to-DC conversion maintains clean, consistent voltage regulation. The design reduces coil whine and supports deeper, more energy-efficient sleep states during idle periods. At low and medium loads the Zero RPM fan mode stops the cooling fan completely, eliminating audible noise. Higher loads engage active cooling while the 80 PLUS Gold certification keeps efficiency high, limiting waste heat and acoustic output.

80 PLUS Gold Efficiency Certification

The single specification that determines suitability is the 80 PLUS Gold rating, which guarantees high efficiency across typical load ranges. This translates directly into lower power consumption, reduced operating temperatures and quieter performance. Builds that cannot accommodate a Gold-rated unit due to budget or space constraints will need a different power supply. No other efficiency tier is offered for this model.