KHACHIMO PRT DC 300W Power Supply PSD300R-RA

300 W ATX Power Supply

This 300 W ATX unit delivers 80 PLUS Gold certified efficiency for lower consumption and cooler operation. It targets builders assembling compact or office systems that require reliable power without excess capacity. Modern Standby compatibility ensures rapid wake-from-sleep responsiveness. The resonant LLC topology with DC-to-DC conversion supplies clean, consistent voltage rails.

Build Integration

The ATX form factor fits standard chassis layouts and leaves cable routing space for small-form-factor builds. Zero RPM fan mode stops the fan entirely at low and medium loads, removing acoustic intrusion in quiet environments. DC-to-DC conversion supports deeper sleep states, freeing the platform to enter modern low-power modes. No auxiliary PCIe connectors are described, so discrete graphics cards requiring external power cannot be supported.

Capacity and Headroom

The 300 W rating comfortably handles integrated-graphics desktops, thin-client deployments, and entry-level workstations with modest storage arrays. Efficiency remains high across typical office workloads, reducing waste heat. Systems demanding sustained multi-rail loads above this ceiling — such as gaming rigs with dedicated GPUs or workstations driving many drives — will exceed the available headroom.