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:
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- XPG KYBER 850W ATX v3.1 PSU Review
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- XPG Core Reactor II 850W PSU Review
- Thermaltake Toughpower PF3 850W PSU Review
- Thermaltake Toughpower GF A3 850W PSU Review
- MSI MAG A850GL PCIE5 850W PSU Review
- Montech Titan Gold 850W PSU Review
- Cougar GEX X2 850W PSU Review
- be quiet! Pure Power 12 M 850W PSU Review
- Thermaltake Toughpower GF3 ARGB 850W PSU Review
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- Thermaltake ToughPower GF3 850W ATX v3.0 PSU Review
- 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 | |||||
May I please ask, why is there no review of the Leadex VII XG 850w? It’s highly recommended but I can’t find the review.
Thanks again for the wonderful work.
Do you think Super Flower Leadex VII Pro 850W is still a great option despite high In-rush current?
Other options I have are Deepcool PX850G, Corsair RM850e and XPG Core reactor II.
So what do you recommend ?
Yes it is a good option, because you won’t be able to drain that easily its bulk cap in normal conditions.
Full bridge: 4x main FETs
Hald bridge: 2x main FETs
I would leave it on the fan working mode, and let the fan adjust its temperature based on the thermal load.
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.
everything is affected, but note, high inrush currents exist ONLY if the bulk cap is completely drained, something not that easy.
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
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.
Is the only difference between this line and the XG line 3.0 vs 3.1 compatability?
they have hardware differences.
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?
The XP model. This 1200W model if they send it yes.
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?
Hello, could there be an error in the characteristics? What is the correct full-bridge or hall-bridge topology?
thank you and greetings