KHACHIMO 400W ATX Power Supply H47318 80 PLUS Gold

400W ATX power supply for efficient builds

The KHACHIMO H47318 delivers 400 watts of continuous power in a standard ATX form factor. It carries 80 PLUS Gold certification for high efficiency across typical loads. Modern Standby compatibility ensures extremely fast wake-from-sleep times and better low-load efficiency. Resonant LLC topology with DC-to-DC conversion provides clean, consistent power while reducing coil whine.

Replaces older or lower-efficiency units

Upgrading from a non-modular or Bronze-rated supply cuts power draw, heat output and fan noise. The Zero RPM fan mode stops the fan entirely at low and medium loads for near-silent operation. The jump is worth it when building a system that spends long periods idle or in sleep states where Modern Standby and DC-to-DC conversion excel. Builders needing more than 400 watts for high-end graphics cards or heavy overclocking should look at higher-capacity models.

Check your power and connector needs

Verify that 400 watts covers the combined TDP of your CPU, GPU and peripherals with headroom. Confirm the 24-pin ATX connector matches your motherboard and that the available peripheral cables suit your drives and graphics card. Ensure the physical dimensions fit your case and that the airflow path is not blocked by other components.