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Rectangular ATX power supply unit with matte black metal casing and rear fan grille

KHACHIMO

KHACHIMO Power Supply For SGI/RACKABLE 252W/456W AHW5DC252W AHF5DC456W

SKU CH-S70C-6MKWF

Replacement ATX power supply for SGI and Rackable servers delivering 252W or 456W with 80 PLUS Gold efficiency, Modern Standby support.

  • TypeATX
  • Fast wake-from-sleep with Modern Standby support
  • Lower power draw thanks to 80 PLUS Gold efficiency
  • Near-silent operation via Zero RPM fan mode
  • Clean, stable power from Resonant LLC with DC-to-DC
  • Compatible with SGI/RACKABLE 252W and 456W systems

SGI/RACKABLE Replacement Power Supply

This new ATX power supply is built as a direct replacement for SGI and RACKABLE systems using the AHW5DC252W and AHF5DC456W part numbers. It delivers up to 456 watts of continuous power with 80 PLUS Gold efficiency. The unit is designed for workstation and server environments that require reliable, standards-compliant power delivery.

Upgrade From Lower Efficiency or Failed Units

The 80 PLUS Gold certification replaces older Bronze or unrated supplies to reduce waste heat and lower operating costs. Modern Standby compatibility upgrades legacy sleep states for faster wake times and better low-load efficiency. Zero RPM fan mode removes audible noise at light loads where older units would spin constantly. Resonant LLC topology with DC-to-DC conversion replaces group-regulated designs to provide tighter voltage regulation and reduce coil whine.

Verify SGI/RACKABLE Compatibility Before Ordering

Confirm that your chassis accepts a standard ATX form factor and that the original unit matches the AHW5DC252W or AHF5DC456W model numbers. Check that the native connector layout matches your backplane and motherboard requirements without adapters. Ensure the 252W to 456W output range covers the peak draw of your installed processors, memory, and storage configuration.

Highlights

  • Fast wake-from-sleep with Modern Standby support
  • Lower power draw thanks to 80 PLUS Gold efficiency
  • Near-silent operation via Zero RPM fan mode
  • Clean, stable power from Resonant LLC with DC-to-DC
  • Compatible with SGI/RACKABLE 252W and 456W systems

Specifications

TypeATX

Questions about this item

What form factor does this power supply use for mounting?

The unit follows the ATX form factor and fits standard ATX mounting holes in compatible SGI or Rackable chassis.

How is the power supply installed, and what step is often missed?

Slide the unit into the chassis bay, secure it with the four ATX mounting screws, then connect both the 24-pin main and 4/8-pin CPU power cables; the step often missed is fully seating the 24-pin connector until the latch clicks.

What maintenance will this power supply need over time?

Periodically clean dust from the intake grill and fan blades with compressed air; the Zero RPM fan mode reduces bearing wear, so no scheduled fan replacement is required.

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