Super Flower Leadex VII PRO 850W ATX v3.1 PSU Review

The Super Flower Leadex VII PRO 850W is a high performance power supply, Platinum certified in the Cybenetics scheme. For those few of you who haven’t heard of this brand/manufacturer so far, read the review to learn more. 

The Super Flower Leadex VII PRO 850W will be included in my best ATX v3.x & PCIe 5.x PSU picks article.

Super Flower used to be the OEM behind EVGA’s most successful PSU lines, including the legendary G2, which cemented this brand into the PSU market till its vast downsize, which most likely will lead to a complete shutdown. Super Flower learned the hard way that relying on a single brand for its sales is not optimal. So, after things turned south with EVGA, it decided to create its retail channels and sell the products under its name and not create a home brand, as most manufacturers do. This is the best choice if you don’t have the time to create a new brand image and want to exploit your good name on the market.

The Leadex VII Pro line has three members, with 1200W, 1000W, and 850W max power. In this review, I will evaluate the smallest member; in the next, I will evaluate the 1000W model. The Leadex VII PRO 850W is Platinum certified in the Cybenetics scheme and has a Cybenetics A- noise rating, meaning that its average noise output is between 25 and 30 dBA. All cables are modular, and probably the most important feature, besides capacity, efficiency, and noise ratings, is the ATX v3.1 compatibility. From the moment the PSU doesn’t use the native 12V-2×6 connector but propriety ones, it automatically gets an upgrade to the ATX v3.1 spec.

ATX v3.1 850W PSU Reviews:

Technical Specifications:
  • Manufacturer (OEM): Super Flower
  • Max Power: 850W
  • Cybenetics Efficiency: [115V] Cybenetics Platinum (89-91%) [230V] Cybenetics Gold (89-91%)
  • Noise: Cybenetics A- (25-30 dB[A])
  • Compliance: ATX v3.1, EPS 2.92
  • Operating Temperature (Continuous Full Load): 0 – 50 °C
  • Alternative Low Power Mode support: Yes
  • Power 12V combined: 849.6W
  • Number of 12V rails: 1
  • Power 5V + 3.3v: 100W
  • Power 5VSB: 12.5W
  • Cooling: 140mm Fluid Dynamic Bearing Fan (ZFF142512D)
  • Semi-Passive Operation: ✓ (selectable)
  • Modular Design: Yes (Fully)
  • High Power Connectors: 2x EPS (2x cables), 4x PCIe 6+2 pin (4x cables), 1x PCIe 12+2 pin (600W)
  • Peripheral Connectors: 8x SATA (2x cables), 4x 4-pin Molex (1x cables)
  • ATX Cable Length: 590mm
  • EPS Cable Length: 700mm
  • 6+2 pin PCIe Cable Length: 700mm
  • 12+4 pin PCIe Cable Length: 700mm
  • Distance between SATA / 4-pin Molex: 130/150mm
  • In-cable capacitors: No
  • Dimensions (W x H x D): 150 mm x 85 mm x 150mm
  • Weight: 1.52 kg (3.35 lb)
  • Warranty: 10-years
  • Street price (excluding VAT): $170

Power Specifications

Rail 3.3V 5V 12V 5VSB -12V
Max. Power Amps 20 20 70.8 2.5 0.3
Watts 100 849.6 12.5 3.6
Total Max. Power (W) 850
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10 thoughts on “Super Flower Leadex VII PRO 850W ATX v3.1 PSU Review

  1. Regarding the high inrush current
    will the high inrush current damage both the PSU and external voltage stabilizer in the long run? I currently use this PSU alongside a 1000 VA stabilizer.

      1. I’m not really familiar with electricity,
        does turning the PC off for days completely drain off the bulk capacitor?
        Also, will you still rate leadex vii pro as good as leadex vii XG?
        I was going to buy leadex vii XG since you rated it as the best overall performance, but it was out of stock in my country, so I bought the leadex vii pro

        1. Usually not. The bulk cap usually keeps a charge unless the PSU is off for a significant period, week, or even months. The XG seems to have slightly higher performance but you won’t notice it. You made a very good choice to buy the Pro, no worries.

      1. Hello, are these manufacturing differences for better or worse? in my country the leadex XG 850 and the leadex XP Pro 850 cost the same, after reviewing both and seeing the problems with the Pro, which one would you choose? Do you plan to review the leadex vii xp 1200 Pro?

          1. Based on your experience, in these models that come with fans with ECO or hybrid mode, do you recommend always using the fan on or having it work automatically based on temperature?

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