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Compact SFX power supply unit with 8 cm fan, matte black finish, fixed cables visible

Ruth's sister

Ruth's sister internal power cable SFX 300W

SKU CH-XGTR-79G22

SFX 300W power supply with passive PFC, 24-pin, 4-pin CPU, two SATA and two IDE connectors, 8 cm fan, 74% efficiency

  • 300 W rated output with 400 W peak for compact builds
  • 74 % efficiency meets basic desktop and server needs
  • 8 cm silent fan improves cooling while reducing noise
  • Built-in over-voltage, short-circuit and overload protection safeguards components
  • SFX 125 mm length fits small-chassis HTPC and MATX cases

SFX power supply for compact builds

This 300 W SFX unit fits small chassis such as HTPC and MATX systems. It delivers a maximum output of 400 W and uses a passive PFC design with a non-modular cable layout. The 8 cm fan provides cooling for desktop and server applications.

Sustained load behaviour and protection

Efficiency is rated at 74 % with a hold-up time of 16 ms minimum and a power-good signal of 100 to 500 ms. Built-in safeguards cover overvoltage, short circuit and overload conditions during continuous operation. The fan maintains airflow under prolonged demand.

Compatibility checks before ordering

Verify that your motherboard accepts a 24-pin ATX and a 4-pin CPU connector. The cable set includes two SATA and two IDE plugs plus a small 4-pin connector. Input voltage range is 180 to 264 V with a manual 115/220 V selector switch.

How it compares

Measured against everything we stock in Internal PSU & Riser Cables, at today’s prices. Recalculated every night.

Price $52.99
Pricier than about 84% of the 7,839 comparable items (median $14.99).

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Specifications

No published specifications for this item yet.

Questions about this item

How much noise and heat does the 8 cm fan produce when the SFX 300 W unit runs continuously?

The 8 cm silent fan is designed for better heat dissipation and lower noise, while the passive PFC design and 74 % efficiency keep waste heat moderate during all-day operation.

Which motherboard and drive connectors must already be present for this non-modular SFX supply to work?

The fixed cable set provides a 24-pin ATX connector, a 4-pin CPU connector, two SATA plugs, two IDE plugs and one small 4-pin peripheral connector.

Will the 4-pin CPU connector and 300 W rated output support an older platform kept alongside this SFX unit?

The 4-pin CPU connector matches legacy motherboards, and the 300 W continuous rating with 16 ms hold-up time delivers stable power for older desktop or server builds.

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