Super Flower Leadex 2800W ATX 3.1 power supply review: Top-notch build quality, exceptional efficiency

Tom's Hardware Verdict 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. $799.99 at Newegg $899.99 at Amazon $899.99 at Best Buy Pros + Exemplary power quality + Outstanding cold efficiency + Premium Japanese capacitors + Top-quality silicon + Massive connector selection + Exceptional build quality Cons - Extremely loud at load - Requires 200V+ input for maximum power - Extremely high price - No zero-RPM mode Best picks for you Best Power Supplies 2026 Best PC Cases 2026: Our Tested Picks for Your Next Build Best AIO Coolers 2026 Why you can trust Tom's Hardware 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 . Jump to: Specs and Design Cold Test Results Hot Test Results PSU Quality and Bottom Line Super Flower Computer Inc. is a Taiwanese company founded in 1991, headquartered in the Xinzhuang area. Over more than three decades, Super Flower has built a reputation grounded in engineering rather than marketing. For much of its history, the company operated largely out of public view in Western markets, functioning as the OEM 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 ped