KHACHIMO 1U 650W Power Supply PWS-563-1H20

1U 650W ATX Power Supply

The KHACHIMO PWS-563-1H20 is a 1U form-factor ATX power supply delivering 650W of continuous power. It targets builders assembling rackmount servers or compact workstations where vertical space is restricted to a single rack unit. The unit carries 80 PLUS Gold certification for high efficiency across typical load ranges. Modern Standby compatibility ensures rapid wake-from-sleep transitions for supported platforms.

Upgrade from lower-efficiency or noisy units

Replacing an older bronze-rated or non-modular supply with this model cuts waste heat and reduces acoustic output at idle. The resonant LLC topology with DC-to-DC conversion tightens voltage regulation and suppresses coil whine, a noticeable improvement over group-regulated designs. Zero RPM fan mode eliminates fan noise entirely during low and medium workloads. The efficiency jump is most valuable in systems that run continuously or sit in noise-sensitive environments.

Fits 1U chassis with standard ATX wiring

The 1U height allows installation in shallow rackmount enclosures where taller PSUs cannot fit. Standard ATX connector layout ensures compatibility with common server and workstation motherboards without adapter cables. High efficiency and low-load optimisation reduce the thermal load on the chassis airflow path, freeing cooling capacity for CPU and storage devices. Modern Standby support lets the platform enter deeper sleep states without losing connectivity.