We grab a dozen of the latest 600-700W PSU products, strap them to the test machine and put them through their paces. With all your favourite brands tested, who is worth buying for your next upgrade?

Enermax has launched a replacement for the ageing Liberty and Noisetaker II - say hello to the 82+ series. The non-modular Pro 82+ claims a consistent power efficiency of... wait for it... more than 82 percent. Let's find out how it gets on.