Articles: Cases/PSU
 

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High-efficiency PSUs are getting more and more popular these days. They are available from more brands and at more affordable prices.

Corsair is one of the PSU makers that offer PSUs with the 80 PLUS Gold certification. We already know the senior model of Corsair's Gold-certified series, AX1200, which is based on a Flextronics platform. The rest of the AX series, which is also known as Professional Series Gold, are based on Seasonic’s well-known X Gold PSUs.

Thus, Corsair’s AX650, AX750 and AX850 match Seasonic’s SS-660KM, SS-760KM and SS-850KM, respectively, in their parameters but cost considerably less. So, our goal is to make sure that Seasonic's quality is as high in the products they make for Corsair as in Seasonic's own PSUs.

Testing Methodology

The following article offers a detailed description of our testing methodology and equipment and a brief explanation of what the specified and tested parameters of power supplies mean: X-bit Labs Presents: Power Supply Units Testing Methodology. If you feel overwhelmed with the numbers and terms this review abounds in, refer to the Methodology.

You can also go to our Cases/PSU section to check out reviews of all other PSU models we have tested in our labs.

We will mark the actual power consumption of three system configurations (discussed in our article PC Power Consumption: How Many Watts Do We Need?) in the cross-load diagrams. This will help you see if the tested PSU can meet the requirements of a real-life PC.

Closer Look at Corsair AX650, AX750 and AX850

Packaging and Accessories

The packaging of the junior models of Corsair's Gold-certified PSU series is similar in size and contents to that of Seasonic's X Gold except for its exterior design.

Corsair preferred to show the modular connectors instead of the opposite PSU panel as on Seasonic’s packaging.

On the back of the box you can find a description of the product’s key features in several languages, a list of its connectors, and tables with its electrical specs, efficiency and fan regulation algorithm.

Each model of the series comes in an individual box, although they all share the same design style.

Besides the PSU, the box contains a pouch with detachable cables, another pouch for the PSU, fasteners, a system case sticker, a few cable straps, and a user manual.

Everything seems to be the same as with Seasonic’s PSUs, but Corsair’s accessories betray some cost-cutting measures on closer inspection. The cable pouch is simpler in design. The PSU pouch is made of ordinary synthetic fabric rather than velvet. There are no reusable cable straps in the box and the user manual looks cheaper.

On the other hand, the accessories include everything you expect to find in a PSU box (and even some more). So if this difference in nuances has helped Corsair bring the price down, we don't mind it.

 
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