With sales of around 150,000 PSUs a month, Corsair is one of the largest vendors for retail power supplies. Corsair got in earlier than most other lateral entrants like GeIL or A-DATA, and their time in the market has enabled them to gather a lot of experience even if they don't have their own factory. In recent times they've used CWT, Seasonic and Flextronics as their PSU ODMs.

A few weeks ago Corsair presented their newest PSUs, the AX series. The goal is to provide performance, quality and high efficiency, this is apparently the best power supply Corsair can offer at the moment. Today we'll look at the AX750; is the 80Plus Gold certificate justified? And what other useful features does it provide?

The AX750 and 850W models are based on a Seasonic design (X-400FL and/or X-760) with some modifications in the details. For example Corsair uses flat peripheral cables and offers a 7-year warranty. They don't have the PWM fan from the original (it's an Antec patent), but they use the same kind of fan regulation; we will see that later in our test. Interesting features include the fully modular cable management and a silent, semi-passive fan control.

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