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Black rectangular ATX power supply unit with a single 120mm fan visible on one side, modular cable ports on the rear, matte finish

Super Flower

Super Flower SF-1250Z12FG 1250W ATX 3.1 power supply

SKU CH-CBWT-WY186 MPN SF-1250Z12FG

A 1250W fully modular ATX 3.1 power supply with 80 PLUS Gold and Cybenetics Platinum efficiency, PCIe 5.0 readiness and a 120mm fluid dynamic bearing fan

  • Max wattage1250 W
  • Power efficiency> 90%
  • Modular cablingFull Modular
  • Fan configuration1 × 120 mm
  • Power factor correctionActive
  • Main power connector20+4Pin

Model ATX 3.1 80+ Gold (1250W) Black

  • Delivers 1250W for demanding builds
  • Cybenetics Platinum and 80+ Gold certifications confirm high efficiency
  • Fully modular ribbon cables simplify cable management
  • ATX 3.1 and PCIe 5.0 ready with native 12V-2x6 connectors
  • 120mm fluid dynamic bearing fan runs quietly at 140mm depth

High-output ATX 3.1 unit

This 1250W power supply targets builders who need a single-rail design and full modularity for a high-end desktop. It delivers up to 1250 watts from a compact 140 mm chassis. The unit is not suited for systems that require redundant supplies or server-grade hot-swap frames.

Cybenetics Platinum and 80 PLUS Gold

Efficiency reaches 87 percent at 20 percent load, 90 percent at 50 percent load and 87 percent at full load. The single +12V rail provides clean power for multi-GPU configurations. Headroom disappears when sustained draw exceeds the 1250W rating or when transient spikes surpass the ATX 3.1 excursion limits.

Full modular ribbon cables and FDB fan

All cables are detachable ribbon types, including a native 12V-2x6 connector built from two 8-pin leads. The 120 mm fluid-dynamic-bearing fan runs quietly under typical loads. The 140 mm depth fits most mid-tower cases but may conflict with very short chassis or bulky drive cages.

How it compares

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

Price $91.99
Cheaper than about 71% of the 10,869 comparable items (median $142.99).
Max wattage 1250 W
Higher than about 90% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameSuper Flower
Product colorBlack
Product typeATX 3.1
Power
Max wattage1250 W
Power efficiency> 90%
Modular cablingFull Modular
Power factor correctionActive
Main power connector20+4Pin
12V railsSingle
Efficiency certification80 PLUS GOLD Certified
Supply voltage100–240 V
AC input frequency50/60 Hz
Size & build
Shipping weight2.50 kg
Package size292 × 229 × 127 mm
Compatibility
PSU length limit140 mm
More details
Fan configuration1 × 120 mm

Other versions of this model

2 more in the same range

Questions about this item

Will the 140 mm length fit the older mid-tower case I plan to keep?

The unit measures 140 mm long, so it fits most mid-tower cases that accept standard ATX power supplies; check your case clearance against that figure.

How can I verify the fan is running correctly after installation?

The 120 mm fluid dynamic bearing fan spins up at power-on; listen for smooth, quiet rotation and watch for the fan blade movement through the rear grille.

Which cables come in the box and what must I source separately?

The fully modular package includes the 20+4 pin motherboard cable, two native 12V-2x6 cables built as 2x8-pin to 16-pin, plus standard PCIe and peripheral cables; no extra cables are required for normal installations.

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