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Silver metal 1U power supply unit with rear fan grille and cable connectors

KHACHIMO

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

SKU CH-7XE6-MEGHD

A 650 W ATX unit with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support for fast wake times and quiet operation

  • TypeATX
  • Modern Standby support enables extremely fast wake-from-sleep
  • 80 PLUS Gold certification delivers high efficiency and lower power draw
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • 650 W output in a 1U form factor fits compact server and workstation builds

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.

Punti di forza

  • Modern Standby support enables extremely fast wake-from-sleep
  • 80 PLUS Gold certification delivers high efficiency and lower power draw
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • 650 W output in a 1U form factor fits compact server and workstation builds

Caratteristiche tecniche

TypeATX

Domande su questo articolo

Will the 1U form factor fit my 1U server chassis?

The unit is a 1U 650W ATX switching supply, so it matches standard 1U server bays that accept an ATX power supply.

Which cables must be connected for the Modern Standby fast-wake feature to work?

Connect the 24-pin ATX motherboard cable and the 4+4-pin CPU power cable; the supply’s Modern Standby compatibility then enables rapid wake-from-sleep.

How long before the Zero RPM fan mode may need the fan replaced?

The fan only spins under higher load, so bearing wear is slower than on always-spinning designs; expect many years before a replacement is required.

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