KHACHIMO HK400-58FP 300W Peak 400W ATX Power Supply

ATX Power Supply for Modern Standby Systems

The KHACHIMO HK400-58FP is a 300 W continuous ATX unit rated for 400 W peak output. It carries 80 PLUS Gold certification for high efficiency across typical loads. Modern Standby compatibility enables extremely fast wake-from-sleep times and improved low-load efficiency. Resonant LLC topology with DC-to-DC conversion delivers clean, consistent power while reducing coil whine.

Upgrade from Lower-Efficiency

Replacing an older Bronze-rated or non-certified supply brings measurable gains in efficiency, heat output, and acoustic profile. The jump is worth it when building or refreshing a system that relies on Modern Standby sleep states for instant resume. Zero RPM fan mode eliminates fan noise at low and medium loads, a benefit absent from basic designs that spin continuously.

300 W Continuous Capacity with 400 W Peak Headroom

The unit comfortably handles mainstream desktop configurations drawing up to 300 W sustained, with 400 W peak headroom for transient spikes. It runs out when a build demands sustained loads above the rated continuous wattage, such as high-end multi-GPU arrays or heavily overclocked workstations. Builders needing more than 300 W continuous should select a higher-capacity model.