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Compact 1U 300W ATX power supply unit with metal casing and rear fan grille

KHACHIMO

KHACHIMO 1U 300W ATX Power Supply GW-EPS1U300HC-YD

SKU CH-A2B7-KW57B

A 300 W ATX power supply in a 1U form factor with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support for quiet, low-power operation

  • Product typeATX
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Zero RPM fan mode keeps the system silent under light loads
  • Resonant LLC topology with DC-to-DC conversion delivers clean, stable power
  • Modern Standby support enables ultra-fast wake from sleep
  • 300 W ATX output fits compact 1U server and workstation builds

1U 300W ATX Power Supply

This KHACHIMO unit delivers 300W of power in a 1U form factor with an ATX design. It carries 80 PLUS Gold certification for high efficiency operation that reduces power consumption and heat output. The resonant LLC topology with DC-to-DC conversion provides clean, consistent power delivery while reducing coil whine. Modern Standby compatibility enables extremely fast wake-from-sleep times and improved low-load efficiency.

Suitable for compact servers and quiet workstations

Builders fitting a 1U chassis who need Gold-rated efficiency and silent low-load operation will benefit from the Zero RPM fan mode. The DC-to-DC topology supports modern sleep states for responsive wake performance. Systems requiring more than 300W of continuous power or a larger form factor such as ATX PS/2 should look at alternative units. High-density GPU configurations needing multiple PCIe power connectors are not supported by this design.

300W output capacity

The single deciding specification is the 300W rated output which determines whether this unit can handle your components' combined power draw. Calculate total system consumption including CPU, memory, storage and expansion cards against this limit. The 80 PLUS Gold rating ensures efficient conversion at typical loads but does not increase the maximum available wattage. Exceeding this capacity will cause instability or shutdown.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $114.99
Cheaper than about 61% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeATX

Questions about this item

Does the box include all cables needed for a standard ATX build or must any be purchased separately?

The unit ships with the fixed ATX, CPU and peripheral cables required for a typical build; no extra cables are needed for standard installations.

Should I choose this 300 W Gold unit or a higher-wattage model for a compact workstation?

Select this 300 W model when the total system draw stays below that limit; a higher-wattage unit is only necessary if your components demand more power.

What does the 80 PLUS Gold rating mean for daily power draw and heat in a 1U chassis?

It guarantees at least 80 % efficiency at typical loads, so less electricity is wasted as heat and the fan can stay off longer under light workloads.

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