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Black rectangular ATX power supply unit with fully modular cable ports and a 120 mm fan grille

Super Flower

Super Flower SF-850Z12FG 850W ATX 3.1 power supply

SKU CH-7F8K-7EC6V MPN SF-850Z12FG

Fully modular 850 W ATX 3.1 unit with Cybenetics Platinum and 80 Plus Gold efficiency, 120 mm FDB fan, 140 mm depth and native 12V-2x6 cable for PCIe 5.0 graphics cards

  • Max wattage850 W
  • Power efficiency> 90%
  • Modular cablingFull Modular
  • Fan configuration1 × 120 mm
  • Power factor correctionActive
  • Main power connector20+4Pin

Model ATX 3.1 80+ Gold (850W) Black

  • Fully modular ribbon cables simplify cable routing
  • Cybenetics Platinum certification confirms high efficiency
  • 80 PLUS Gold rating at 20%, 50%, 100% loads
  • ATX 3.1 and PCIe 5.0 ready for modern GPUs
  • 120 mm fluid dynamic bearing fan runs quietly

Power for ATX 3.1 builds

This 850W ATX 3.1 power supply targets builders who need PCIe 5.0 readiness and full modular cabling. It suits high-performance desktops that draw substantial power from a single 12V rail. Buyers who want more storage or additional graphics cards will need a higher-capacity unit.

Thermals, noise and power draw

A 120 mm fluid dynamic bearing fan handles cooling across the load range. Active PFC and 100-240 V auto-switching keep input current stable. Cybenetics Platinum and 80 PLUS Gold ratings confirm 87% efficiency at 20% and 100% load, rising to 90% at 50% load.

Build quality and daily connectivity

Full modular design uses ribbon cables for easier routing inside compact cases. The 140 mm chassis depth fits most ATX layouts. Native 12V-2x6 cables with dual 8-pin to 16-pin adapters support modern GPUs without extra adapters.

How it compares

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

Price $89.99
Cheaper than about 72% of the 10,869 comparable items (median $142.99).
Max wattage 850 W
Typical for this category: the median of 930 items is 850 W.

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Specifications

Product
Brand nameSuper Flower
Product colorBlack
Product typeATX 3.1
Power
Max wattage850 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 weight2.27 kg
Package size305 × 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

How do I route the 12V-2x6 cable through a case with a 140 mm PSU limit?

The unit is 140 mm long, so verify the case clearance before installing the native 12V-2x6 cable; the fully modular ribbon cables let you connect only what you need and keep the routing clean.

When should I expect to replace the 120 mm Fluid Dynamic Bearing fan?

Fluid Dynamic Bearing fans typically run for many years; listen for increased noise or vibration as the first sign that the fan may need service.

At what load does the 87 percent efficiency floor apply during sustained operation?

The 87 percent efficiency rating is measured at both 20 percent and 100 percent of the 850 W rated load, so prolonged full-load use stays at or above that floor.

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