I am a firm believer that 1000W is overkill for 99.9% of computer enthusiasts, but it’s hard to resist such a powerful beast when building a new machine. Because of this, demand is high and the choices tough. To make the decision a wee bit easier, Christoph Katzer
has taken eight 1000W power supplies and pit them against each other to see which one deserves to be thrown in your rig.
On the chopping block is Thermaltake’s Toughpower, Antec’s TruePower Quattro, Akasa’s Powermax and others. Although all of the supplies performed well, OCZ’s ProXStream 1000W came out on top, but the trade-off is sound levels. It’s not a quiet supply. That said… I am still pleased with my 600W.
The Akasa PowerMax showed good results today and has very long cables. It is unfortunately not available in many shops at present, but the company is working to address that. In Europe, you can get it for 198 EUR at komplett.de. Performance-wise, the OCZ ProXStream stands out today with stable DC outputs, low ripple, and high efficiency, but also with high noise levels. If you’re not ultra concerned with noise levels, the ProXStream is a great deal at $230-250. It also has a very small form factor which will let it fit into every standard ATX case.
Source: AnandTech