KHACHIMO DS1200DC-3 1200W power supply

1200W ATX power supply for modern standby systems

The KHACHIMO DS1200DC-3 is a 1200W ATX power supply built for PCs that use Modern Standby sleep states. Its 80 PLUS Gold certification means high efficiency across typical loads, reducing waste heat and electricity draw. The resonant LLC topology with DC-to-DC conversion delivers stable voltages and supports deeper, more energy-efficient sleep states. It suits workstations and high-end desktops that need strong, clean power.

Zero RPM fan mode and coil whine reduction

At low and medium loads the cooling fan stops completely, giving near-silent operation during idle or light work. The DC-to-DC design also reduces coil whine, so the unit stays quiet even when the fan spins up under heavier demand. These features change the acoustic profile of the build without requiring extra software or manual fan curves. The result is a quieter system across a wide range of workloads.

Check ATX fit and cable reach before ordering

Verify that your case accepts a standard ATX power supply and that the cable lengths reach your motherboard, GPU and storage devices. Confirm the motherboard supports Modern Standby if you want the fast wake and low-load efficiency benefits. Ensure the 1200W capacity matches the peak draw of your components so the unit runs in its most efficient range. No adapter brackets or non-standard mounting hardware are included.