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SFX power supply unit with 24-pin and 8-pin connectors, black casing

Ruth's sister

Ruth's sister SFX4001 internal power cable

SKU CH-BREB-B62P4

A 400-watt SFX power supply with active PFC, 24-pin ATX, 8-pin CPU, dual 6-pin GPU, three SATA and two 4-pin peripheral connectors

  • Compact SFX form factor fits small cases
  • 400 W rated output with 500 W peak for gaming loads
  • Active PFC and up to 90 % efficiency reduce wasted power
  • Three SATA connectors and two 6-pin GPU plugs support drives and graphics cards
  • Universal 100-240 V input works worldwide

SFX 400 W Internal Power Supply

This SFX form-factor unit delivers a rated 400 W and a 500 W peak for compact desktop builds. It uses a non-modular design with a 450 mm main cable and an 80 mm temperature-controlled fan. Active PFC operates across a 90 V to 264 V input range. The 20+4 pin ATX, 8-pin CPU, two 6-pin GPU, three SATA and two 4-pin peripheral connectors cover typical small-form-factor layouts.

Compact Systems Needing 400 W From a Non-Modular

Suits mini-ITX cases that accept a 100 mm × 125 mm × 64 mm power supply and require the listed connector mix. Not for builds that demand fully modular cabling, higher than 500 W peak output, or an 80 PLUS Bronze or better efficiency badge.

400 W Rated Output With 500 W Peak

The single figure that decides fit is the 400 W continuous rating combined with a 500 W maximum; if the system's combined CPU and GPU draw exceeds this ceiling, a higher-capacity SFX unit is required.

How it compares

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

Price $39.99
Pricier than about 79% 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

What SFX clearance does the 100 mm × 125 mm × 64 mm SFX4001 need?

The unit fits any SFX bay that provides at least 100 mm width, 125 mm depth and 64 mm height, with room for the 8 cm fan exhaust.

How do I connect the non-modular cables, and which step is often missed?

Plug the 450 mm 20+4 pin main connector, the 8 pin CPU lead, the two 6+2 pin GPU leads, three SATA plugs and two 4-pin D-type plugs into the board and drives; the step most installers forget is seating the small 4-pin peripheral connector.

When should the 8 cm temperature-controlled fan be cleaned or the unit replaced?

Clean the fan intake every 6–12 months with compressed air; if the fan becomes noisy or the PSU hits its protection limits under a 400 W load, plan a replacement.

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