Super Flower Leadex 2800W ATX 3.1 power supply review: Top-notch build quality, exceptional efficiency
Super Flower's Leadex 2800W is the most powerful retail power supply available, built with premium components and efficiency that outclass units half its size.
Reaching its full rated output requires a 200-240V supply, so most U.S. buyers on standard outlets will be limited to around 1,700 watts of usable power.
There is no real competition for the Leadex 2800W. It is the most powerful retail power supply unit currently available, and it performs exactly as the specifications suggest. Super Flower has built a reference-class unit with premium components throughout, an exceptional topology, and efficiency numbers that embarrass units half its capacity.
The price is what it is, and the target buyer is not negotiating. Requires 200V+ input for maximum power Why you can trust Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out more about how we test.
Super Flower behind some of the most respected power supply lines ever sold under other brand names. The entire EVGA G2, G3, P2, and T2 series were Super Flower designs, and those units earned a loyal following built entirely on real-world performance. When the commercial relationship with EVGA ended, Super Flower gained the freedom to sell under its own name in North America and Europe, and the Leadex series has been the vehicle for that transition.
The Leadex 2800W is what happens when that engineering pedigree is applied without compromise or cost ed under that condition, as a standard North American outlet cannot supply more than approximately 1800 watts, capping usable PSU output at around 1700 watts. Anyone intending to operate this unit at anything near its rated capacity must use a 200 to 240 VAC supply, which requires a special outlet installation in the US. This is not a product for a typical desktop.
It targets workstation and extreme gaming builds where power demands exceed what any conventional unit can supply. It's one of the best power supplies we've tested. The packaging is large and appropriately serious in presentation.
The cardboard box is sturdy, with a geometric pattern background and a clear image of the unit. Inside, the heavy unit is protected by a fabric pouch, foam slabs on both ends, and paper inserts. The bundle is relatively sparse for a unit at this price point and includes mounting thumbscrews, a NEMA C20 AC power cable, a cable storage bag, and a jump-start testing adapter.
A printed manual is included. The accessory package is far from elaborate. The cables are all-black throughout, with black nylon sleeving on almost every cable in the bundle.
This is not common practice. Most manufacturers reserve sleeving for a subset of cables and leave the rest bare. Here, sleeving is the norm and the 12V-2x6 cables are the exception.
The 12V-2x6 connectors, of which there are four, have ribbon-like wires with no sleeving shielding them – which is a good thing, as these require all the cooling they can get. Beyond those four, the unit carries six additional 6+2 pin PCI Express connectors. The total connector count is ludicrous.
Super Flower has clearly built this unit with extreme multi-GPU workstation configurations in mind. At 200mm in length, the Leadex 2800W is substantially longer than a standard ATX unit. This is not a unit that fits in a typical consumer mid-tower.
A case designed for workstation or extreme is and forms a complex geometric cutout pattern that conceals the cooling fan entirely from view, which lends the unit a distinctive appearance without resorting to RGB, heavy branding, or excessive modifications. The top surface houses the electrical specification and certification sticker. The left and right sides feature decorative etchings of the Leadex series logo.