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Compact SFX power supply unit with black metal casing and visible cooling fan

KHACHIMO

KHACHIMO SL-8250SFX 250W SFX power supply

SKU CH-Z0EX-CQKCW

SFX 250 W unit delivers 80 PLUS Gold efficiency, Modern Standby support and a Zero RPM fan mode for silent low-load operation

  • TypeATX
  • Modern Standby compatible for fast wake times
  • 80 PLUS Gold efficiency reduces power draw and heat
  • Zero RPM fan mode stops the fan at low load
  • Resonant LLC with DC-to-DC delivers clean power
  • SFX form factor fits compact 250W builds

SFX 250W power supply for compact builds

The KHACHIMO SL-8250SFX is an ATX-compliant SFX unit rated at 250W, designed for small-form-factor systems where space is limited. It delivers gold-rated efficiency and modern standby support for fast wake times, making it suitable for living-room PCs, mini workstations or portable rigs that prioritise low noise and a small footprint.

Sustained-load efficiency and thermal behaviour

The 80 PLUS Gold certification means the unit maintains high efficiency across typical operating ranges, reducing waste heat and keeping internal temperatures lower during extended workloads. A resonant LLC topology with DC-to-DC conversion provides clean, stable power output under continuous demand, while the zero-RPM fan mode stops the fan entirely at low and medium loads for near-silent running.

Upgrade path from lower-efficiency SFX units

This supply replaces older SFX power supplies that lack gold-rated efficiency, modern standby compatibility or semi-passive cooling. The jump is worthwhile when building or refreshing a compact system that needs reliable 250W delivery, quieter operation at idle and support for deeper sleep states without coil whine.

Highlights

  • Modern Standby compatible for fast wake times
  • 80 PLUS Gold efficiency reduces power draw and heat
  • Zero RPM fan mode stops the fan at low load
  • Resonant LLC with DC-to-DC delivers clean power
  • SFX form factor fits compact 250W builds

Specifications

TypeATX

Questions about this item

How quiet is the KHACHIMO SL-8250SFX 250W power supply during all-day operation?

The 80 PLUS Gold certified unit includes a Zero RPM fan mode that stops the fan completely at low and medium loads for near-silent running, while resonant LLC topology with DC-to-DC conversion reduces coil whine.

Which cables or connectors must I already have to install this SFX power supply?

It uses the standard ATX connector layout, so your motherboard needs a 24-pin main power socket and the usual 4-pin or 8-pin CPU power header; the SFX form factor also requires a compatible case mounting bracket.

Will the SL-8250SFX work reliably with older components I plan to keep?

Modern Standby compatibility enables faster wake-from-sleep and efficient low-power states that older hardware can use, while the DC-to-DC design delivers stable voltages across legacy and current parts alike.

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