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Rectangular silver ATX power supply unit with black cooling fan visible

KHACHIMO

KHACHIMO PBA50F-3R3-R 3.3V 10A 50W ATX Power Supply

SKU CH-TNA6-6GH6F

An ATX unit delivers 3.3 V at 10 A for 50 W with 80 PLUS Gold efficiency, zero-RPM fan mode and resonant LLC topology

  • TypeATX
  • 3 V 10 A output delivers stable 50 W power
  • 80 PLUS Gold certification cuts consumption and heat
  • Zero RPM fan mode stops fan at low load for silence
  • Resonant LLC with DC-to-DC gives clean power and reduces coil whine
  • Modern Standby support enables fast wake and efficient sleep states

3.3V 10A 50W ATX Power Supply

The KHACHIMO PBA50F-3R3-R is a new ATX power supply rated at 50W on the 3.3V rail with a 10A current limit. It carries 80 PLUS Gold certification and uses a resonant LLC topology with DC-to-DC conversion for efficient power delivery. Modern Standby compatibility allows extremely fast wake-from-sleep times and improved low-load efficiency.

Builders seeking silent low-power systems

This unit suits builders who want a quiet, efficient supply for low-wattage ATX configurations. The Zero RPM fan mode stops the fan at low and medium loads for near-silent operation. It is not for systems that require higher total wattage or additional voltage rails beyond the 3.3V 50W specification.

50W 3.3V rail capacity decides fit

The single specification that determines suitability is the 50W capacity on the 3.3V rail at 10A. If the target build demands more power on this rail or needs other rails not described here, this supply will not meet the requirement. Match the rail rating to the system load before purchasing.

Highlights

  • 3 V 10 A output delivers stable 50 W power
  • 80 PLUS Gold certification cuts consumption and heat
  • Zero RPM fan mode stops fan at low load for silence
  • Resonant LLC with DC-to-DC gives clean power and reduces coil whine
  • Modern Standby support enables fast wake and efficient sleep states

Specifications

TypeATX

Questions about this item

What ATX case clearance does the PBA50F-3R3-R require for the 50 W unit?

The supply follows the standard ATX form factor, so it fits any chassis with a regular ATX power-supply bay and matching screw holes.

Which motherboard connector does the 3.3 V 10 A rail use, and what is the common installation mistake?

It delivers 3.3 V power through the main 24-pin ATX connector; the frequent error is leaving the 24-pin plug partially unseated, which causes unstable voltage on the rail.

What part of the PBA50F-3R3-R typically needs attention after extended use?

The cooling fan is the only moving component; if bearing noise appears the fan can be replaced, while the LLC resonant topology and DC-to-DC conversion have no user-serviceable parts.

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