Epilogue
The Super Flower Leadex VII PRO 850W is usually sold for $170, which is not affordable. At the time of the review, it was sold for $200, bundled with a Zillion M705 chassis. The $200 bundle deal is superb since you get a high-performance PSU and a good chassis at an excellent price! I don’t know for how long Super Flower will keep this deal, so you should hurry if you need to build a new system or upgrade your current one.
The Leadex VII PRO 850W is a high-performance PSU that could achieve an even higher overall performance score, with better ripple suppression, higher PF readings, and lower vampire power. Still, its ripple suppression is not mediocre; its load regulation is superb, its transient response is good, especially at 12V, which is the most important rail, and noise output is low at light and moderate loads. If you don’t push the minor rails above 60-80W, the noise output won’t be that high, even at higher loads. Moreover, the platform is highly efficient, although it needs a slight boost at super-light loads. Lastly, the hold-up time is extra long because of the large bulk cap, but the latter is also responsible for the sky-high inrush currents. Super Flower needs to install a larger NTC thermistor or add a second one to fix that. High inrush currents can damage your home’s electrical infrastructure, but to reach that point, you must drain the bulk cap completely, which is easier said than done.
The Super Flower Leadex VII PRO 850W is a good power supply that can support a potent gaming system without sweating. Super Flower is known for its high-performance and reliable platforms; this unit is no exception. Since I am extra picky, I would like to see some changes in the protection features and have the OCP and OPP triggering points further apart under hot and cold conditions to make them more effective. You can never know how hard some users can be to the PSU, so it is better to be safe than sorry. The 5VSB circuit also needs updating for higher efficiency.
Before investing in a new power supply, read my Best ATX v3.x PSUs article to check all alternative PSU offerings. You help me a lot by using my affiliate links, which don’t increase the product’s price. I get a commission from Amazon every time you do it, which can make a difference for me, especially now that I am on my own, working exclusively for my media and not for someone else.
- Delivered full power at 47°C
- High overall performance
- ATX v3.1 and PCIe 5.1 ready
- High build quality
- Good transient response at 12V
- Extra tight load regulation
- Extra long hold-up time
- Silent operation at light and moderate loads
- Conservatively set OCP and OPP triggering points
- Alternative Low Power Mode (ALPM) compatible
- FDB fan
- Fully modular
- Enough cables and connectors, including a high-power one (12+4 pin, 600W)
- Long enough distance (150mm) between the 4-pin Molex connectors
- Compact dimensions (150mm depth)
- Sky-high inrush currents
- The fan speed profile gets messy at high loads
- APFC converter needs tuning for higher PF readings
- Low-efficiency 5VSB rail
- High vampire power
- Lower than 70% efficiency with a 2% load
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