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Black rectangular ATX power supply unit with 140 mm fan grille and modular cable sockets

Super Flower

Super Flower Leadex III PE Platinum 850W power supply

SKU CH-5VYF-8F536 MPN 850W

An ATX 3.1 compatible 850 W unit with full modular cabling, a 140 mm fluid dynamic bearing fan, Cybenetics Platinum efficiency and comprehensive protection circuits

  • Max wattage850 W
  • Power efficiency> 90%
  • Modular cablingFull Modular
  • Fan configuration1 × 140 mm
  • Power factor correctionActive
  • Main power connector20+4Pin

Energy-Efficient Platinum

Watts 850W

  • Cybenetics Platinum certified efficiency above 90% reduces energy waste
  • ATX 3.1 and PCIe 5.1 compliant for modern GPU power spikes
  • 140 mm fluid dynamic bearing fan with semi-fanless mode for quiet operation
  • Full modular braided cables simplify cable management and airflow
  • Comprehensive protection suite includes OVP, OCP, OPP, SCP, UVP, OTP, NLO, SIP

Purpose and audience

This 850 W ATX 3.1 power supply targets builders who need reliable delivery for modern GPUs and CPUs. Full modular cabling and a 140 mm fluid-dynamic-bearing fan keep the interior tidy and quiet.

Deciding specification

Cybenetics Platinum certification confirms efficiency above 90 percent across the load range. The single +12 V rail and full protection suite handle transient spikes without tripping.

Fit and alternatives

Suits compact chassis limited to 150 mm PSU length and systems that demand ATX 3.1 plus PCIe 5.1 readiness. Builders needing higher wattage or a different efficiency tier should consider other models.

How it compares

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

Price $88.99
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 lineLeadex III ATX 3.1
Model name850 W
Product typeATX 3.1 Compatible
Graphics
SLI supportReady
CrossFire supportReady
Power
Max wattage850 W
Power efficiency> 90%
Modular cablingFull Modular
Power factor correctionActive
Main power connector20+4Pin
12V railsSingle
Efficiency certificationCybenetics Platinum
Overvoltage protectionYes
Overload protectionYes
Built-in protectionOVP / OCP / OPP / SCP / UVP / OTP / NLO / SIP
Supply voltage100–240 V
AC input frequency50/60 Hz
Compatibility
Haswell compatibilityReady
PSU length limit150 mm
More details
Fan configuration1 × 140 mm

Other versions of this model

5 more in the same range

Questions about this item

How does the 850 W rating hold up when the supply is installed in a working PC?

The 850 W figure is the maximum continuous output the unit can deliver across all rails combined, so a system drawing up to that level will stay within the supply's rated capacity.

What does ATX 3.1 compliance actually limit on this power supply?

ATX 3.1 compliance means the unit meets the current specification for power-excursion handling and includes the 12VHPWR connector required by the standard.

Will the 150 mm length fit in a standard ATX case?

At 150 mm long the power supply matches the typical ATX form-factor depth, so it fits most mid-tower and larger cases that accept standard ATX units.

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