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Silver 1U ATX power supply unit with rear fan grille

KHACHIMO

KHACHIMO 1U 250W ATX Power Supply FLEX-0125B

SKU CH-JZN1-2BF33

A 1U 250W ATX power supply with 80 PLUS Gold efficiency, Modern Standby support, Zero RPM fan mode, and resonant LLC topology with DC-to-DC conversion for clean, quiet power delivery

  • Product typeATX
  • Modern Standby compatible for near-instant wake from sleep
  • 80 PLUS Gold certified efficiency lowers power draw and heat
  • Zero RPM fan mode stops the fan at low loads
  • Resonant LLC topology with DC-to-DC conversion delivers clean, stable power
  • Compact 1U form factor fits space-constrained chassis builds

Compact ATX PSU for dense builds

The KHACHIMO FLEX-0125B is a 1U ATX power supply rated at 250 W, designed for slim enclosures where vertical space is at a premium. Its 80 PLUS Gold certification and resonant LLC topology with DC-to-DC conversion deliver efficient, clean power for embedded systems, thin clients or specialised workstations.

Suited for low-power compact systems

This unit fits builders assembling Modern Standby PCs or silent office machines that stay within a modest power envelope. The zero-RPM fan mode keeps acoustics near zero at typical loads. It is not for gaming rigs, workstations with discrete GPUs, or any build that demands higher continuous wattage or auxiliary PCIe connectors.

250 W continuous output decides fit

The single specification that determines compatibility is the 250 W rated capacity. Verify that the complete system draw — CPU, memory, storage and peripherals — remains comfortably below this figure before selecting the FLEX-0125B.

How it compares

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

Price $225.99
Pricier than about 68% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeATX

Questions about this item

Does the 250W unit have any user-replaceable parts such as the fan or internal capacitors?

No user-replaceable components are listed for this 250W power supply. The cooling fan is integrated and not designed for field replacement, and the internal capacitors are soldered to the PCB.

What is the first limit reached when the 250W supply runs at full load for an extended period?

The 250W maximum output rating is the primary limit. Sustained operation at that level will eventually trigger over-temperature or over-current protection, causing the unit to shut down.

How loud and hot does the FLEX-0125B get when it runs all day under typical loads?

At low and medium loads the Zero RPM mode keeps the fan off for silent operation. Under heavier continuous loads the fan spins, but 80 PLUS Gold efficiency helps keep temperatures and noise lower than less efficient units.

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