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Rectangular ATX power supply unit, matte black metal casing with ventilation grille and fan visible

KHACHIMO

KHACHIMO P300E 5V 60A 300W power supply

SKU CH-KY9W-MW2D9

ATX power supply delivering 5 V at 60 A for 300 W with 80 PLUS Gold efficiency, Modern Standby support, zero-RPM fan mode and resonant LLC topology

  • Product typeATX
  • Fast wake-from-sleep with Modern Standby support
  • High efficiency cuts power use and heat with 80 PLUS Gold
  • Silent operation at low loads via Zero RPM fan mode
  • Clean, stable power delivery from Resonant LLC with DC-to-DC
  • 300W output at 5V with 60A capacity

Ideal for Modern Standby builds

The KHACHIMO P300E is a 300W ATX power supply rated at 5V 60A designed for systems that use Modern Standby. Its 80 PLUS Gold certification means high efficiency operation for lower power consumption, less noise, and cooler temperatures. Builders seeking extremely fast wake-from-sleep times and better low-load efficiency will benefit from this unit.

Replaces older ATX units without Modern Standby

Upgrading from a standard power supply is worth it when the platform relies on Modern Standby sleep states. The resonant LLC topology with DC-to-DC conversion provides clean, consistent power, reduces coil whine for quieter operation, and enables use of more energy efficient sleep states. Systems that do not require these low-power states will not see the same advantage.

Limited by 300W total output and ATX form factor

The practical ceiling is the 300W rating, which restricts use to lower-power configurations. Zero RPM fan mode keeps the cooling fan off at low and medium loads for near-silent operation, but the fan will engage under heavier demand within that envelope. Builders needing higher wattage or a different form factor must look elsewhere.

How it compares

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

Price $626.99
Pricier than about 90% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeATX

Questions about this item

What ATX case clearance does the P300E 5V 60A 300W supply require?

The unit follows the standard ATX form factor so it fits any case designed for ATX power supplies.

How do I enable the Zero RPM fan mode on this PSU?

Zero RPM activates automatically at low and medium loads; the fan stays off until the internal temperature sensor demands active cooling.

When should I expect to replace the cooling fan in the P300E?

The fan only spins under higher loads, reducing wear, so replacement is rarely needed during the unit's normal service life.

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