Super Flower Leadex Titanium ATX v3.0 1600W PSU Review

Part Analysis

General Data
Manufacturer (OEM) Super Flower
PCB Type Double-Sided
Primary Side
Transient Filter 5x Y caps, 5x X caps, 2x CM chokes, 1x MOV (TVR14511)
Inrush Protection NTC Thermistor SCK-254R7 (4.7 Ohm) & Relay
Bridge Rectifier(s)
Bridgeless Design – 1x US30K80R & 8x Infineon FETs
8x Infineon FETs
APFC Boost Diode
4x Infineon IDH08G65C5 (650V, 8A @ 145°C)
Bulk Cap(s)
4x Nippon Chemi-Con (400 V, 2x 330 uF, 2x 470 uF, 1600 uF combined, 105°C, KMW)
Main Switchers
4x Infineon IPB60R099C6 (650V, 24A @ 100°C, Rds(on): 0.099Ohm)

APFC Controller


Resonant Controller
Topology Primary side: Bridgeless PFC & Full-Bridge LLC & Resonant Converter
Secondary side: Synchronous Rectification & DC-DC converters
Secondary Side
+12V MOSFETs 12x Infineon BSC027N04LSG (40V, 88A @ 100°C, Rds(on): 2.7mOhm)
5V & 3.3V DC-DC Converters: 8x Infineon BSC0906NS (30V, 40A @ 100°C, Rds(on): 4.5mOhm)
PWM Controllers: 2x
Filtering Capacitors Electrolytic:
10x Nippon Chemi-Con (105°C, W),
5x Nippon Chemi-Con (4-10,000 @ 105°C, KY),
20x Rubycon (3-5,000 @ 105°C, ML),
11x Rubycon (6-10000 @ 105°C, ZLH)
Polymer: 12x Chemi-Con
Supervisor IC JTC113 & LM324ADG
Fan Model ZIC ZFF142512D (140mm, 12V, 0.65A, Fluid Dynamic Bearing Fan)
5VSB Circuit
1x PFR20L60CT SBR (60V, 20A)
Standby PWM Controller 29604

The platform is identical to the one I tested eight years ago, so I can easily guess that Super Flower only made the necessary changes for ATX v3.o compatibility. Although the PCB is large, it is overpopulated by components. There is more clearance on the secondary side’s filtering caps, which require good cooling to have a long (and prosperous) life. The platform uses a bridgeless PFC converter, a full-bridge topology, and a resonant converter for increased efficiency. On the secondary side, the 12V rail is regulated by FETs (synchronous rectification) and the minor rails through a pair of DC-DC converters.

Since I got a pre-production sample, the soldering quality is mediocre in some parts without affecting performance, though. Compared to the unit I reviewed in 2015, the differences in electronic parts are few, with the major change being the new fan from ZIC instead of the Globe Fan that the older unit had. The new ZIC fan is a bit stronger, with 0.65A max current consumption instead of 0.6A of the Globe Fan RL4Z-B1402512EH.

In general, this design shows its age since it has been with us for more than eight years, and SF should focus on releasing something that goes head-to-head with current requirements. Moreover, such large dimensions look weird to most users, with competing units by XPG and Seasonic measuring 210mm in length instead of 225mm, which is still high enough. The truth is that you cannot have both compact dimensions and low noise output. Downsizing in PSUs usually increases noise because the airflow gets affected, and the small distances between parts lead to increased thermal loads. Lastly, it might be an old design, without any doubt, but with some tuning and touch-ups, it still delivers top performance, keeping up with the competition. Nonetheless, I would like to see SF innovating again, as it did with the first-released Leadex models back in the day.

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2 thoughts on “Super Flower Leadex Titanium ATX v3.0 1600W PSU Review

  1. Great review as always, thank you aris.

    I wonder what happened to the digital psu platform that Superflower showed way back during Computex 2015, it was never mentioned again outside of that event.

  2. Super Flower Leadex Titanium ATX v3.0 1600W PSU

    I cannot find a Super Flower Leadex Titanium 1600W PSU that also denotes it as ATX v3.0 compatible.
    I’ve seen ones with a box exactly as you depict in this review (which also does not say ATX v3.0 on it anywhere), with everything the same except without the 600W PCIe 5.0 / Gen 5 12VHPWR PSU Cable. I have seen that cable available separately however and it states it is compatible with the Leadex 1600W Titanium.

    I think the only Super Flower PSU’s I’ve seen that denote ATX v3.0 on them are the Leadex VII XG’s.

    So I am a bit confused. Can you clarify the ATX v3.0 compatibility of this unit?

    Thank you for all your testing and posting it for us to review!

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